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general description the max4060?ax4063 are differential-input micro - phone preamplifiers optimized for notebook/pda audio systems. these devices feature rail-to-rail outputs with excellent power-supply rejection and common- mode rejection ratios, making them ideal for low-noise applications in portable audio systems. the max4060/max4062/max4063 are capable of switching their output between the differential input and a single-ended auxiliary microphone amplifier input. in addition, the max4060/max4062/max4063 have a low- noise microphone bias generator. the differential gain of the max4061/max4062/max4063 is set with a single resistor. the max4060 has a fixed gain of 10v/v and is pc99/2001 compliant. the max4063 has a comple- mentary output allowing codecs with differential inputs to be optimally driven. the max4061/max4063 include a complete shutdown mode. in shutdown, the supply current is reduced to 0.3? and the current to the microphone bias is cut off for ultimate power saving. the max4060 operates from a 4.5v to 5.5v single sup- ply and the max4061/max4062/max4063 operate from 2.4v to 5.5v. all devices are specified over the extend- ed operating temperature range, -40? to +85?. the max4060/max4061 are available in tiny 8-pin qfn and 8-pin ?ax packages. the max4062 is available in a 10-pin ?ax package and the max4063 in a 14-pin tssop package. applications features 2.4v to 5.5v single-supply operation adjustable gain high psrr (86db at 1khz) high cmrr (70db at 1khz) low input-referred noise on-board microphone bias 750a supply current 0.3a shutdown current 4kv esd protection (aux_in) complementary output (max4063) rail-to-rail outputs thd + n: 0.04% at 1khz available in space-saving packages 8-pin qfn (max4060/max4061) 8-pin max (max4060/max4061) 10-pin max (max4062) 14-pin tssop (max4063) max4060?ax4063 differential microphone preamplifiers with internal bias and complete shutdown ________________________________________________________________ maxim integrated products 1 in- in+ bias 10 9 5 aux_in 12 shdn 3 6 v bias v cc 2.4v to 5.5v max4063 int/aux 2 out 8 out 4 adj 7 r g gnd 11 1 14 g1 g2 input control typical operating circuit ordering information 19-2408; rev 0; 4/02 for pricing, delivery, and ordering information, please contact maxim/dallas direct! at 1-888-629-4642, or visit maxim? website at www.maxim-ic.com. pin configurations and selector guide appear at end of data sheet. rail-to-rail is a registered trademark of nippon motorola, ltd. notebook audio systems pda audio systems usb audio peripherals aes-42 compliant microphones signal conditioning part temp range pin- package top mark max4060 ega -40 c to +85 c 8 qfn aby max4060eua -40 c to +85 c 8 max max4061 ega -40 c to +85 c 8 qfn abz max4061eua -40 c to +85 c 8 max max4062 eub -40 c to +85 c 10 max max4063 eud* -40 c to +85 c 14 tssop * future product?ontact factory for availability.
max4060?ax4063 differential microphone preamplifiers with internal bias and complete shutdown 2 _______________________________________________________________________________________ absolute maximum ratings electrical characteristics (v cc = 3v for max4061/max4062/max4063, v cc = 5v for max4060, gnd = 0, shdn = v cc , int /aux = 0, r g = 11.11k ? , r l = 100k ? to 1.5v, r bias = , t a = t min to t max , unless otherwise noted. typical values are at t a = +25 c.) (notes 1 and 2) stresses beyond those listed under ?bsolute maximum ratings?may cause permanent damage to the device. these are stress rating s only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specificatio ns is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. supply voltage (v cc to gnd). .................................-0.3v to +6v any other pin to gnd ................................-0.3v to (v cc + 0.3v) duration of short circuit to gnd or v cc ....................continuous continuous input current (any pin) ................................ 10ma continuous power dissipation (t a = +70 c) 8-pin qfn (derate 4.7mw/ c above +70 c) ................379mw 8-pin max (derate 4.1mw/ c above +70 c) ..............330mw 10-pin max (derate 5.6mw/ c above +70 c) ...........444mw 14-pin tssop (derate 8.3mw/ c above +70 c) ..........667mw operating temperature range ...........................-40 c to +85 c storage temperature range .............................-65 c to +150 c lead temperature (soldering, 10s) .................................+300 c parameter symbol conditions min typ max units max4061/max4062/ max4063 2.4 5.5 supply voltage range v cc inferred from psrr test max4060 4.5 5.5 v supply current i cc 0.75 1.2 ma v cc - v oh 250 r l = 100k ? v ol - gnd 2 50 v cc - v oh 50 200 output voltage swing v out r l = 2k ? v ol - gnd 50 200 mv output common-mode voltage v ocm 1.25 1.5 1.75 v slew rate sr a v = 10v/v 1 v/s supply current in shutdown i shdn v shdn = 0, max4061/max4063 0.001 1 a to gnd 30 output short-circuit current i sc to v cc 30 ma differential input ( int /aux = 0 for max4060/max4062/max4063, default for max4061) input offset voltage v os 0.1 5mv common-mode input voltage range v cm inferred from cmrr test 1 2 v maximum differential input voltage v diffmax a v = 1v/v, max4061/max4062/max4063 1 v small-signal bandwidth bw -3db 600 khz input resistance r in either differential input 100 k ? input resistance match r match 1%
max4060?ax4063 differential microphone preamplifiers with internal bias and complete shutdown _______________________________________________________________________________________ 3 electrical characteristics (continued) (v cc = 3v for max4061/max4062/max4063, v cc = 5v for max4060, gnd = 0, shdn = v cc , int /aux = 0, r g = 11.11k ? , r l = 100k ? to 1.5v, r bias = , t a = t min to t max , unless otherwise noted. typical values are at t a = +25 c.) (notes 1 and 2) parameter symbol conditions min typ max units a v = 10v/v, f = 1khz 100 input noise-voltage density e n a v = 100v/v, f = 1khz, max4061/max4062/ max4063 only 20 nv/ hz rms output noise voltage v nrms a v = 10v/v, bw = 22hz to 22khz 125 v rms total harmonic distortion plus noise thd + n a v = 10v/v, f = 1khz, v out = 0.7v rms , bw = 22hz to 22khz 0.04 % r g = open 1 1.13 1.3 r g = 11.11k ? 9.6 10 10.4 1v < v cm < 2v, v out = 0.7v rms , max4061/max4062/ max4063 r g = 1.01k ? 96 100 104 differential gain a vdiff 1v < v cm < 2v, v out = 0.7v rms , max4060 9.6 10.0 10.4 v/v common-mode rejection ratio cmrr v cm = 500mv p-p , f = 1khz 70 db t a = +25 c7286 t a = t min - t max 60 power-supply rejection ratio psrr v cc = 5v 100mv, f = 1khz 86 db auxiliary input (max4060/max4062/max4063, int/aux = v cc ) small-signal bandwidth bw -3db 200 khz input resistance r in 100 k ? input noise-voltage density e n f = 1khz 45 nv/ hz rms output noise voltage v nrms bw = 22hz to 22khz 385 v rms total harmonic distortion plus noise thd + n f = 1khz, bw = 22hz to 22khz 0.05 % t a = +25 c6590 power-supply rejection ratio psrr t a = t min - t max 50 db voltage gain (note 4) a vaux v out = 0.7v rms -10.7 -10 -9.3 v/v bias output (max4060/max4062/max4063) i bias = 0.8ma to gnd, max4060 2 2.2 output voltage v out i bias = 0.5ma to gnd, max4062/max4063 2 2.2 v
max4060?ax4063 differential microphone preamplifiers with internal bias and complete shutdown 4 _______________________________________________________________________________________ electrical characteristics (continued) (v cc = 3v for max4061/max4062/max4063, v cc = 5v for max4060, gnd = 0, shdn = v cc , int /aux = 0, r g = 11.11k ? , r l = 100k ? to 1.5v, r bias = , t a = t min to t max , unless otherwise noted. typical values are at t a = +25 c.) (notes 1 and 2) parameter symbol conditions min typ max units i bias = 0.8ma to gnd, max4060 2 2.5 k ? output resistance r out i bias = 0.5ma to gnd, max4062/max4063 22 40 ? i bias = 0.8ma to gnd, bw = 22hz to 22khz, max4060 50 output noise voltage v nrms i bias = 0.5ma to gnd, bw = 22hz to 22khz, max4062/max4063 (note 3) 20 v rms i bias = 0.8ma to gnd, v cc = 4.5v to 5.5v 50 80 max4060 i bias = 0.8ma, v cc = 5v + 100mv p-p , f = 1khz 70 i bias = 0.5ma to gnd, v cc = 2.4v to 5.5v 50 74 power-supply rejection ratio psrr m ax 4062/m ax 4063 (note 3) i bias = 0.5ma, v cc = 3v + 100mv p-p , f = 1khz 71 db digital inputs ( shdn for max4061/max4063 and int /aux for max4060/max4062/max4063) input leakage current i in v in = 0 or v cc 1a input voltage high v inh 0.7 ? v cc v input voltage low v inl 0.3 ? v cc v shutdown enable time t on max4061/max4063 10 s shutdown disable time t off max4061/max4063 10 s note 1: all specifications are 100% tested at t a = +25 c. specification limits over temperature (t a = t min to t max ) are guaranteed by design, not production tested. note 2: max4062/max4063 require a 1f capacitor from bias to ground. note 3: the adj pin is open circuit (max4063 only).
max4060?ax4063 differential microphone preamplifiers with internal bias and complete shutdown _______________________________________________________________________________________ 5 max4060 toc01 frequency (hz) gain (db) 100k 10k 1k 100 -12 -9 -6 -3 0 3 -15 10 1m gain vs. frequency (no load) v cc = 5v max4060 toc02 frequency (hz) psrr (db) 100k 10k 1k 100 -100 -80 -60 -40 -20 0 -120 10 1m power-supply rejection ratio vs. frequency (diff input) a v = 100v/v a v = 10v/v supply current vs. temperature max4060 toc03 temperature ( c) supply current (ma) 80 65 50 35 20 5 -10 -25 0.2 0.4 0.6 0.8 1.0 0 -40 v cc = 3v v cc = 5v supply current vs. supply voltage max4060 toc04 supply voltage (v) supply current (ma) 5.0 4.5 3.5 4.0 3.0 2.5 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0 2.0 5.5 a v = 10v/v no load shutdown supply current vs. temperature max4060 toc05 temperature ( c) shutdown supply current (na) 60 35 10 -15 0.01 0.1 1 10 100 0.001 -40 85 v oh vs. temperature max4060 toc06 temperature ( c) v oh (mv) 60 35 10 -15 10 100 1000 1 -40 85 i load = 2.5ma i load = 50 a v oh = v cc - v out v ol vs. temperature max4060 toc07 temperature ( c) v ol (mv) 60 35 10 -15 10 100 1000 1 -40 85 i load = 2.5ma i load = 50 a v oh vs. load current max4060 toc08 load current (ma) v oh (mv) 4 3 2 1 25 50 75 100 125 150 175 0 05 v oh = v cc - v out v cc = 5v v cc = 3v v ol vs. load current max4060 toc09 load current (ma) v ol (mv) 4 3 2 1 50 100 150 200 250 300 0 05 v cc = 3v v cc = 5v typical operating characteristics (v cc = 3v (max4061/max4062/max4063), v cc = 5v for max4060, a v = 10v/v, r l 100k ? to 1.5v, shdn = v cc (max4061/ max4063 only), t a = +25 c.)
max4060?ax4063 differential microphone preamplifiers with internal bias and complete shutdown 6 _______________________________________________________________________________________ typical operating characteristics (continued) (v cc = 3v (max4061/max4062/max4063), v cc = 5v for max4060, a v = 10v/v, r l 100k ? to 1.5v, shdn = v cc (max4061/ max4063 only), t a = +25 c.) max4060 mic bias voltage vs. temperature max4060 toc10 temperature ( c) mic bias voltage (v) 60 35 -15 10 2.125 2.150 2.175 2.200 2.225 2.250 2.275 2.300 2.100 -40 85 i bias = 800 a total harmonic distortion plus noise vs. frequency (diff input) max4060 toc11 frequency (hz) thd + n (%) 10k 1k 100 0.01 0.1 1 0.001 10 100k v out = 2.26v p-p v cc = 5v v cc = 3v max4060 toc12 frequency (hz) thd + n (%) 10k 1k 100 0.01 0.1 1 0.001 10 100k total harmonic distortion plus noise vs. frequency (aux input) v cc = 3v v cc = 5v v out = 2.26v p-p total harmonic distortion plus noise vs. output amplitude (diff input, v cc = 3v) max4060 toc13 output voltage (v p-p ) thd + n (%) 2.5 2.0 1.5 1.0 0.5 0.01 0.1 1 10 0.001 0 3.0 f = 10khz f = 1khz bw = 22khz total harmonic distortion plus noise vs. output amplitude (diff input, v cc = 5v) max4060 toc14 output voltage (v p-p ) thd + n (%) 3.0 2.5 2.0 1.5 1.0 0.5 0.01 0.1 1 10 0.001 0 3.5 f = 10khz f = 1khz bw = 22khz total harmonic distortion plus noise vs. output amplitude (aux input, v cc = 3v) max4060 toc15 output voltage (v p-p ) thd + n (%) 2.5 2.0 1.5 1.0 0.5 0.01 0.1 1 10 0.001 0 3.0 f = 10khz f = 1khz bw = 22khz total harmonic distortion plus noise vs. output amplitude (aux input, v cc = 5v) max4060 toc16 output voltage (v p-p ) thd + n (%) 3.0 2.5 2.0 1.5 1.0 0.5 0.01 0.1 1 10 0.001 0 3.5 f = 10khz f = 1khz bw = 22khz max4060 toc17 frequency (hz) (nv/ hz) 10k 1k 100 100 200 300 400 500 600 700 800 0 10 100k input-referred noise vs. frequency (diff input) max4060 mic bias output noise max4060 toc18 100ms/div 5 v/div v cc = 5v bw = 22hz to 22khz
max4060?ax4063 differential microphone preamplifiers with internal bias and complete shutdown _______________________________________________________________________________________ 7 max4062 mic bias output noise max4060 toc19 100ms/div 5 v/div v cc = 5v bw = 22hz to 22khz small-signal transient response for diff input max4060 toc20 10 s/div input 5mv/div output 50mv/div large-signal transient response for diff input max4060 toc22 10 s/div input 100mv/div output 1v/div small-signal transient response for aux input max4060 toc21 10 s/div input 5mv/div output 50mv/div output overdriven max4060 toc24 10 s/div input 500mv/div output 1v/div differential input large-signal transient response for aux input max4060 toc23 10 s/div input 200mv/div output 1v/div typical operating characteristics (continued) (v cc = 3v (max4061/max4062/max4063), v cc = 5v for max4060, a v = 10v/v, r l 100k ? to 1.5v, shdn = v cc (max4061/ max4063 only), t a = +25 c.)
max4060?ax4063 differential microphone preamplifiers with internal bias and complete shutdown 8 _______________________________________________________________________________________ pin description pin max4060 max4061 max4062 max4063 name function 1 22 int /aux internal (differential) or auxiliary (single-ended) input select. drive int /aux low to select internal or high to select auxiliary mic input. 2 3 3 4 out amplifier output. out is high impedance when in shutdown mode. 3 bias external electret microphone capsule bias output. bias has a greater than 2k ? output impedance. 4456v cc power supply. bypass the v cc to gnd with a 0.1f capacitor. 5569in+ noninverting differential amplifier input. ac-couple the audio signal into in+. 6 6 7 10 in- inverting differential amplifier input. ac-couple the audio signal into in-. 7 7 8 11 gnd ground 8 9 12 aux_in single-ended input for auxiliary microphone. ac-couple the audio signal into aux_in. 111g2 gain-selectable input. connect an external resistor between g1 and g2 to set the gain for the differential amplifier. (see adjustable differential-gain setting section). 2 3 shdn shutdown input. drive shdn high for normal operation. drive shdn low for shutdown mode. 4 5 bias external electret microphone capsule bias output bypass bias with 1f capacitor to ground 7 adj adjustable gain select for aux_in (see auxiliary input-gain adjust- ment section). 8 out complementary amplifier output. when int /aux = low, this is the complement signal of the out pin, biased around the internally derived reference. when int /aux = high, out is a buffered version of the internal dc reference used by the aux amplifier. 13 n.c. no connection. not internally connected. 81014g1 gain-selectable input. connect an external resistor between g1 and g2 to set the gain for the differential amplifier. detailed description the max4060 max4063 are differential microphone pre- amplifiers providing high-quality audio, optimized for use in computer and mobile applications. these devices fea- ture rail-to-rail outputs, very high power-supply rejection, and common-mode rejection, making them ideal for low- noise applications. the max4060 max4063 are particu- larly effective when layout constraints force the microphone amplifier to be physically remote from the ecm microphone and/or the rest of the audio circuitry. the max4060/max4062/max4063 are capable of switching their output between the differential input and an inverting single-ended input. int/aux selects either the differential input or single-ended auxiliary input. in addition, the max4060/max4061/max4063 have an internal bias generator to bias the microphone in either differential or single-ended modes. the max4063 has a complementary output allowing codecs and other devices with differential inputs to be optimally driven (see functional diagram ). the max4061/max4063
max4060?ax4063 differential microphone preamplifiers with internal bias and complete shutdown _______________________________________________________________________________________ 9 include a complete 0.3a shutdown mode for ultimate power savings. the differential gain of the max4061/max4062/max4063 is set with a single resis- tor connected between the g1 and g2 pins. the max4060 has a fixed gain of 10v/v, while the max4063 has an internal default gain of 10v/v on the aux_in input, although this can be adjusted to different values (see the differential gain-setting and auxiliary input- gain adjustment sections). differential input the main microphone input is a low-noise, differential input structure. this is an almost essential element when faced with amplification of low-amplitude analog signals in digitally intense environments such as note- book pcs or pdas. used correctly, the advantages over a single-ended solution are: better power-supply noise rejection less degradation from noise in pc board ground planes microphone and preamplifier may be placed physi- cally further apart, easing pc board layout restrictions fixed differential gain (max4060) the max4060 has an internal fixed gain of 10v/v for its differential input. this feature simplifies design, reduces pin count and footprint, and eliminates external gain- setting resistors. ref shdn shdn v cc bias bias bias in- in+ g2 aux_in g1 3 10 9 1 12 14 7 adj 11 gnd v cc 2.4v to 5.5v 6 int/aux out out bias 2 4 8 5 v bias max4063 r g functional diagram
max4060?ax4063 differential microphone preamplifiers with internal bias and complete shutdown 10 ______________________________________________________________________________________ adjustable differential-gain setting the max4061/max4062/max4063 allow the user to alter the gain to optimize the signal-to-noise ratio (snr) of their system. the gain is set by a single external resistor (r g ) connected between the g1 and g2 pins, where: r g = 100k ? / (a v - 1) where a v is the required voltage gain. hence, an 11.11k ? resistor yields a gain of 10v/v, or 20db. leaving the pins unconnected results in a gain of 1v/v. gain is defined as: for max4061/max4062/max4063: a v = v out / (v in+ - v in- ) for max4063: a v = (v out - v out ) / (v in+ - v in- ) the resistor can be either fixed or variable, allowing the use of a digitally controlled potentiometer to alter the gain under software control. auxiliary input-gain adjustment (max4063) on the max4060/max4061/max4062, the voltage gain of the auxiliary input is internally fixed at -10v/v. the max4063 provides the option to adjust this gain. connect a resistor r adj1 between the adj and out pins to reduce the gain. to increase the gain, connect resistor r adj2 between the adj and aux_in pins. r adj1 and r adj2 are calculated from the following formulas: r adj1 = 2.5m ? / ((50 / a v ) - 5) (to decrease the gain) r adj2 = (0.5m ? ) / (a v - 10) (to increase the gain) where a v is the voltage gain. r adj1 and r adj2 are in ? . input capacitors the two differential microphone inputs and the single- ended auxiliary input of the max4060 max4063 have on-chip bias components, allowing the user to ac-cou- ple any signals on to the input. the input resistance is 100k ? (typ), so the capacitor size may be chosen accordingly to define the lf rolloff desired. this can be calculated as: c in = 1 / (2 f cut r in ) this assumes a low source impedance driving the inputs. a further consideration for the differential input is the effect of these series input capacitors on low-frequency, common-mode rejection. any mismatch in the values of these two capacitors degrades the cmrr at frequen- cies where the impedance of the capacitor is significant compared to the input resistance of the amplifier this is usually most noticeable at low frequencies. one way to avoid the need for matched or tight tolerance capaci- tors is to deliberately oversize the values on the differ- ential inputs and to set the lower 3db point (f cut ) of the amplifier by sizing the output capacitor appropriately. the input impedance matching on the differential input is typically 1%, allowing input capacitor matching to be effective at improving low-frequency psrr. common-mode rejection ratio the common-mode rejection ratio (cmrr) refers to the amount of rejection that the amplifier is capable of pro- viding to any signal applied equally to the in+ and in- inputs. in the case of amplifying low-level microphone signals in noisy digital environments, it is a key figure of merit. in audio circuits, this is generally measured for v in as an ac signal: cmrr(db) = a dm / a cm = v indiff / ? v incm where a dm is the differential gain, a cm is the common- mode gain, ? v incm is the change in input common- mode voltage (in+ and in- connected together) and v indiff is the differential input voltage. input voltages are sufficiently small such that the output is not clipped in either differential or common-mode application. the topology used in the max4061/ max4062/max4063 means that the cmrr actually improves at higher differential gains another advan- tage of using differential sensing. auxiliary input the auxiliary input is a single-ended input intended to be used with a jack-socket type microphone input (figure 1). internal dc-bias components (as on the main inputs) allow the input signal to be ac-coupled. mechanically switched jack sockets can be used in conjunction with the int /aux select pin, allowing the auxiliary microphone input to be automatically selected when a jack socket is inserted. microphone bias voltage max4060 the max4060 has a microphone bias voltage designed to comply with the microsoft/intel pc99/2001 audio standard. it features source impedance of greater than 2k ? , and delivers more than 2v of bias when loaded with a current of 800a. this limits operation of this part to supplies between 4.5v to 5.5v (see figure 2). max4061/max4062/max4063 the max4061/max4062/max4063 have a lower bias voltage and low-impedance outputs (optimum electret bias resistor can then be set externally). this gives a
max4060?ax4063 differential microphone preamplifiers with internal bias and complete shutdown ______________________________________________________________________________________ 11 low-noise, flexible solution that can run from 2.4v to 5.5v, suitable for hand-held devices such as pdas that typically have audio power supplies in the 3v region. output max4060/max4061/max4063 dc bias the output voltage has a dc-bias voltage independent of the power supplies, resulting in superior psrr per- formance. the max4061/max4063 outputs are high impedance when the part is in shutdown mode. ac- coupling the output into the next audio stage (e.g., codec) is recommended (see figure 4). differential output (max4063) the max4063 features a differential output stage (out and out ), allowing optimum performance when con- nected to adcs and codecs with differential inputs. this differential output is particularly useful in designs where the microphone preamplifier is mounted some distance away from the codec/adc, as the low-imped- ance, differential line provides excellent noise rejection and immunity (see figure 4). when the aux input is selected, out is a buffered ver- sion of the internal dc reference. applications information shutdown mode the max4061/max4063 feature a low-power, complete shutdown mode. when shdn goes low, the supply cur- in- in+ 7 6 aux_in 9 v cc 2.4v to 5.5v max4062 int/aux 2 gnd 8 bias 4 v bias out 3 g1 10 g2 1 ref 5 r bias c bias 100k ? * * switched jack. figure 1. max4062 with auxiliary input configuration in- in+ 6 5 aux_in microphone input 8 v cc 4.5v to 5.5v max4060 int/aux 1 gnd 7 bias 3 v bias out 2 ref 4 r bias figure 2. max4060 used for biasing a microphone
max4060?ax4063 differential microphone preamplifiers with internal bias and complete shutdown 12 ______________________________________________________________________________________ rent drops to 0.3a, the output enters a high-imped- ance state, and the bias current to the microphone is switched off. driving shdn high enables the amplifier. shdn should not be left floating. power supplies and layout the max4060 operates from a 4.5v to 5.5v single sup- ply and the max4061/max4062/max4063 operate from a 2.4v to 5.5v single supply. bypass the power supply with a 0.1f capacitor to ground. in systems where analog and digital grounds are available, the max4060/max4061/max4063 should be connected to the analog ground. ref shdn shdn v cc in- in+ g2 aux_in g1 3 10 9 1 12 14 7 adj 11 gnd v cc 2.4v to 5.5v 6 int/aux out out 2 4 8 max4063 r g bias 5 v bias 1 f 1 f 0.1 f 0.1 f 0.1 f 2.2k ? 2.2k ? 11k ? values shown provide a differential gain of 10v/v. figure 3. max4063 used to bias a microphone connected to the auxiliary input and the differential input
max4060?ax4063 differential microphone preamplifiers with internal bias and complete shutdown ______________________________________________________________________________________ 13 ref shdn shdn v cc in- in+ g2 aux_in g1 3 10 9 1 12 14 7 adj 11 gnd v cc 2.4v to 5.5v 6 int/aux out out 2 4 8 max4063 r g bias 5 v bias adc typical values provide a differential gain of 10v/v. 1 f 0.1 f 0.1 f 0.1 f 2.2k ? 11k ? 1 f 1 f figure 4. using the max4063 with differential input and differential output configuration
max4060?ax4063 differential microphone preamplifiers with internal bias and complete shutdown 14 ______________________________________________________________________________________ selector guide product auxiliary input diff input gain single- ended input gain microphone bias shutdown mode diff output supply voltage (v) max4060 ? 20db 20db ? 4.5 to 5.5 max4061 adj ? 2.4 to 5.5 max4062 ? adj 20db ? 2.4 to 5.5 max4063 ? adj adj ??? 2.4 to 5.5 pin configurations 1 2 3 4 8 7 6 5 aux_in gnd in- in+ v cc bias out int/aux max4060 max/qfn 1 2 3 4 8 7 6 5 g1 gnd in- in+ v cc out shdn g2 max4061 max/qfn top view 1 2 3 4 5 10 9 8 7 6 g1 aux_in gnd in- bias out int/aux g2 max4062 max in+ v cc 14 13 12 11 10 9 8 1 2 3 4 5 6 7 g1 n.c. aux_in gnd out shdn int/aux g2 max4063 in- in+ out adj v cc bias tssop chip information max4060/max4061/4062 transistor count: 264 max4063 transistor count: 351 process: bicmos
max4060?ax4063 differential microphone preamplifiers with internal bias and complete shutdown ______________________________________________________________________________________ 15 package information (the package drawing(s) in this data sheet may not reflect the most current specifications. for the latest package outline info rmation, go to www.maxim-ic.com/packages .) 6l, 8l qfn(dual).eps
max4060?ax4063 differential microphone preamplifiers with internal bias and complete shutdown 16 ______________________________________________________________________________________ package information (continued) (the package drawing(s) in this data sheet may not reflect the most current specifications. for the latest package outline info rmation, go to www.maxim-ic.com/packages .) 8lumaxd.eps package outline, 8l umax/usop 1 1 21-0036 j rev. document control no. approval proprietary information title: max 0.043 0.006 0.014 0.120 0.120 0.198 0.026 0.007 0.037 0.0207 bsc 0.0256 bsc a2 a1 c e b a l front view side view e h 0.60.1 0.60.1 ? 0.500.1 1 top view d 8 a2 0.030 bottom view 1 6 s b l h e d e c 0 0.010 0.116 0.116 0.188 0.016 0.005 8 4x s inches - a1 a min 0.002 0.95 0.75 0.5250 bsc 0.25 0.36 2.95 3.05 2.95 3.05 4.78 0.41 0.65 bsc 5.03 0.66 6 0 0.13 0.18 max min millimeters - 1.10 0.05 0.15 dim
max4060?ax4063 differential microphone preamplifiers with internal bias and complete shutdown ______________________________________________________________________________________ 17 10lumax.eps package information (continued) (the package drawing(s) in this data sheet may not reflect the most current specifications. for the latest package outline info rmation, go to www.maxim-ic.com/packages .)
max4060?ax4063 differential microphone preamplifiers with internal bias and complete shutdown maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim product. no circu it patent licenses are implied. maxim reserves the right to change the circuitry and specifications without notice at any time. 18 ____________________maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 ? 2002 maxim integrated products printed usa is a registered trademark of maxim integrated products. tssop,no pads.eps package information (continued) (the package drawing(s) in this data sheet may not reflect the most current specifications. for the latest package outline info rmation, go to www.maxim-ic.com/packages .)

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