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19-3043; Rev 1; 11/04
Quad DPDT Audio/Data Switches in UCSP/QFN
General Description
The MAX4758/MAX4759 quad double-pole/doublethrow (DPDT) analog switches operate from a single +1.8V to +5.5V supply. These switches feature low 0.5 on-resistance for audio switching and a low 25pF capacitance for data switching. The MAX4758 has eight 0.5 on-resistance switches to switch audio signals. The MAX4759 has four 0.5 onresistance switches to route audio signals and four 25pF capacitance switches to route data signals. The MAX4758/MAX4759 have four logic inputs to control the switches in pairs. The MAX4758/MAX4759 are available in a small 36-pin (6mm x 6mm) thin QFN and 36-bump (3mm x 3mm) chip-scale package (UCSPTM).
Features
Data and Audio Signal Routing Low On-Resistance (0.5) Audio Switches 0.2 On-Resistance Flatness 0.1 Channel-to-Channel Matching Low-Capacitance (25pF) Data Switches (MAX4759) 0.2ns Skew (MAX4759) 0.03% THD +1.8V to +5.5V Supply Range Rail-to-Rail Signal Handling Tiny 36-Bump UCSP (3mm x 3mm) 36-Pin Thin QFN (6mm x 6mm)
MAX4758/MAX4759
Ordering Information
PART MAX4758EBX-T MAX4758ETX MAX4759EBX-T MAX4759ETX TEMP RANGE PIN-PACKAGE -40C to +85C 36 UCSP-36 -40C to +85C 36 Thin QFN (6mm x 6mm) -40C to +85C 36 UCSP-36 -40C to +85C 36 Thin QFN (6mm x 6mm)
Applications
Speaker-Headset Switching Audio-Signal Routing Cellular Phones PDAs/Hand-Held Devices Notebook Computers USB Signal Switching
Functional Diagrams
INA NO1 AUDIO 1 COM1 NC1 NO2 AUDIO 2 COM2 NC2 INB NO3 NC2 INB NO3 COM3 NC3 NO4 AUDIO 4 COM4 NC4 INC NO5 NC4 INC NO5 COM5 NC5 NO6 AUDIO 6 COM6 NC6 IND NO7 NC6 IND NO7 COM7 NC7 NO8 AUDIO 8 COM8 NC8 NC8 NC7 NO8 DATA 4 COM8 NC5 NO6 DATA 1 COM6 NC3 NO4 AUDIO 4 COM4 NC1 NO2 AUDIO 2 COM2 INA NO1 AUDIO 1 COM1
AUDIO 3
AUDIO 3 COM3
AUDIO 5
DATA 1 COM5
AUDIO 7
DATA 3 COM7
MAX4758
MAX4759
UCSP is a trademark of Maxim Integrated Products, Inc. Pin Configurations/Truth Table appear at end of data sheet. ________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com.
Quad DPDT Audio/Data Switches in UCSP/QFN MAX4758/MAX4759
ABSOLUTE MAXIMUM RATINGS
(All voltages referenced to GND.) V+, IN_......................................................................-0.3V to +6V COM_, NO_, NC_ (Note 1) ...........................-0.3V to (V+ + 0.3V) Continuous Current NO_, NC_, COM_ (MAX4758) ....................................300mA NO1-NO4, NC1-NC4, COM1-COM4 (MAX4759) .....300mA NO5-NO8, NC5-NC8 COM5-COM8 (MAX4759) ......100mA Peak Current NO_, NC_, COM_ (MAX4758) NO1-NO4, NC1-NC4, COM1-COM4 (MAX4759) (pulsed at 1ms, 10% duty cycle)................................500mA (pulsed at 1ms, 50% duty cycle)................................400mA Peak Current NO5-NO8, NC5-NC8, COM5-COM8 (MAX4759) (pulsed at 1ms, 10% duty cycle)................................200mA (pulsed at 1ms, 50% duty cycle)............................... 300mA Continuous Power Dissipation (TA = +70C) 36-Bump UCSP (derate 15.3mW/C above +70C).... 1221mW 36-Pin Thin QFN (derate 26.3mW/C above +70C)... 2105mW ESD per Method 3015.7.......................................................2kV Operating Temperature Range ...........................-40C to +85C Junction Temperature ......................................................+150C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10s) ................................ +300C Bump Temperature (soldering) Infrared (15s) ...............................................................+220C Vapor Phase (60s) .......................................................+215C
Note 1: Signals on NO_, NC_, COM_ exceeding V+ or GND are clamped by internal diodes. Limit forward-diode current to maximum current rating.
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V+ = +2.7V to +5.25V, TA = -40C to +85C, unless otherwise noted. Typical values are at V+ = 3V, TA = +25C.) (Notes 2, 3)
PARAMETER ANALOG SWITCH Analog Signal Range VCOM_, VNO__, VNC___ V+ = 2.7V, ICOM_ = 10mA, VNC_ or VNO_ = 0 or V+ V+ = 2.7V, ICOM_ = 10mA, VNO_ or VNC_ =1.5V MAX4758, MAX4759 (N_ 1-N_4) MAX4759 (N_5-N_8) MAX4758, MAX4759 (N_1-N_4) MAX4759 (N_5-N_8) MAX4758, MAX4759 (N_1-N_4) MAX4759 (N_5-N_8) TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX +25C TMIN to TMAX -5 -25 -5 -25 45 0.8 0.2 0.2 0.1 2.0 0 0.5 V+ 0.85 1.0 3.5 4 0.35 0.55 0.4 0.55 0.45 0.55 1.5 1.8 +5 +25 +5 +25 140 150 nA nA V SYMBOL CONDITIONS TA MIN TYP MAX UNITS
On-Resistance (Note 4)
RON
On-Resistance Match Between Channels (Notes 4, 5)
RON
On-Resistance Flatness (Note 6)
V+ = 2.7V, ICOM_ = 10mA, RFLAT (ON) VNC_ or VNO_ = 0 or V+ INO_(OFF), INC_(OFF) ICOM_(ON)
NO_, NC_ Off-Leakage Current COM_ On-Leakage Current DYNAMIC Turn-On Time
V+ = 3.6V; VCOM_ = 3.3V, 0.3V; VNO_ or VNC_ = 0.3V, 3.3V V+ = 3.6V; VCOM_ = 3.3V, 0.3V; VNO_ or VNC_ = 3.3V, 0.3V, or floating V+ = 2.7V, VNO_ or VNC_ = 1.5V; RL = 50; CL = 35pF, Figure 2
tON
ns
2
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Quad DPDT Audio/Data Switches in UCSP/QFN
ELECTRICAL CHARACTERISTICS (continued)
(V+ = +2.7V to +5.25V, TA = -40C to +85C, unless otherwise noted. Typical values are at V+ = 3V, TA = +25C.) (Notes 2, 3)
PARAMETER Turn-Off Time Break-Before-Make (Note 7) Skew (Note 7) SYMBOL tOFF tBBM tSKEW CONDITIONS V+ = 2.7V, VNO_ or VNC_ = 1.5V; RL = 50; CL = 35pF, Figure 2 V+ = 2.7V, VNO_ or VNC_ = 1.5V; RL = 50, CL = 35pF, Figure 3 RS = 39, CL = 50pF, MAX4759 (COM5-COM8), Figure 4 VGEN = 0, RGEN = 0, CL = 1.0nF, Figure 5 MAX4758, MAX4759 (COM1-COM4) +25C MAX4759 (COM5-COM8) +25C 15 TA +25C TMIN to TMAX +25C TMIN to TMAX +25C 2 0.2 40 pC 0.5 15 MIN TYP 25 MAX 50 60 UNITS ns ns ns
MAX4758/MAX4759
Charge Injection
Q
On-Channel -3dB Bandwidth
BW
Signal = 0dBm, CL = 5pF, RL = 50, MAX4758, MAX4759 (COM1-COM4) Signal = 0dBm, CL = 5pF, RL = 50, MAX4759 (COM5-COM8)
50 MHz
+25C +25C +25C +25C +25C +25C +25C +25C +25C
320 -95 -100 0.03 % 0.03 102 pF 25 284 pF 54 dB dB
Off-Isolation (Note 8) Crosstalk (Note 9)
VISO VCT
CL = 5pF, RL = 50, VCOM_ = 1VP-P, f = 100kHz, Figure 6 CL = 5pF, RL = 50, VCOM_ = 1VP-P, f = 100kHz, Figure 6 MAX4758, MAX4759 (N_1-N_4), RL = 32 MAX4759 (N_5-N_8), RL = 600 MAX4758, MAX4759 (N_1-N_4) MAX4759 (N_5-N_8) MAX4758, MAX4759 (COM1-COM4) MAX4759 (COM5-COM8)
Total Harmonic Distortion
THD
f = 20Hz to 20kHz, 1VP-P
NO_, NC_ Off-Capacitance
VNO, VNC_ = CNO_(OFF) , GND, CNC_(OFF) f = 1MHz, Figure 7 VNO_, VNC_ = GND, f = 1MHz, Figure 7
COM_ On-Capacitance
C(ON)
DIGITAL I/O (IN_,) Input Logic High Input Logic Low Input Leakage Current VIH VIL IIN V+ = 2.7V to 3.6V V+ = 3.6V to 5.5V V+ = 2.7V to 3.6V V+ = 3.6V to 5.5V VIN = 0 or V+ TMIN to TMAX TMIN to TMAX TMIN to TMAX TMIN to TMAX TMIN to TMAX 1.4 2.0 0.5 0.6 1 V V A
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3
Quad DPDT Audio/Data Switches in UCSP/QFN MAX4758/MAX4759
ELECTRICAL CHARACTERISTICS (continued)
(V+ = +2.7V to +5.25V, TA = -40C to +85C, unless otherwise noted. Typical values are at V+ = 3V, TA = +25C.) (Notes 2, 3)
PARAMETER POWER SUPPLY Power-Supply Range Positive Supply Current V+ I+ V+ = 5.5V, VIN_ = 0V or V+ TMIN to TMAX +25C TMIN to TMAX 1.8 0.01 1.0 5.5 V A SYMBOL CONDITIONS TA MIN TYP MAX UNITS
Note 2: The algebraic convention is used in this data sheet; the most negative value is shown in the minimum column. Note 3: UCSP packages are 100% tested at +25C and limits across the full temperature range are guaranteed by correlation and design. Thin QFN parts are 100% tested at +85C and limits across the full temperature range are guaranteed by correlation and design. Note 4: RON and RON matching specifications are guaranteed by design. Note 5: RON = RON(MAX) - RON(MIN). Note 6: Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the specified analog signal ranges. Note 7: Guaranteed by design, not production tested. Note 8: Off-isolation = 20log10 [VCOM_ / (VNO_ or VNC_)], VCOM_ = output, VNO_ or VNC_ = input to off switch. Note 9: Between any two switches.
Typical Operating Characteristics
(V+ = 3V, TA = +25C, unless otherwise noted.)
ON-RESISTANCE vs. VCOM AND TEMPERATURE
MAX4758 toc01 MAX4758 toc02
ON-RESISTANCE vs. VCOM
2.5 MAX4758, MAX4759 (N_1-N_4) V+ = 1.8V 2.0 1.8 1.6 1.4 RON () RON ()
ON-RESISTANCE vs. VCOM AND TEMPERATURE
1.8 1.6 1.4 RON () 1.2 1.0 0.8 0.6 0.4 0.2 0 TA+ = -40C 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 VCOM (V) TA+ = +85C TA+ = +25C V+ = 5V MAX4758, MAX4759 (N_1-N_4)
MAX4758 toc03
MAX4758, MAX4759 (N_1-N_4) V+ = 3V
2.0
2.0
1.5 V+ = 2V V+ = 2.3V V+ = 2.7V
1.2 1.0 0.8 0.6 0.4
1.0
0.5 V+ = 3V 0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 VCOM (V) V+ = 5V
0.2 0 0 0.5 1.0 1.5 VCOM (V) 2.0 2.5 3.0
4
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Quad DPDT Audio/Data Switches in UCSP/QFN
Typical Operating Characteristics (continued)
(V+ = 3V, TA = +25C, unless otherwise noted.)
ON-RESISTANCE vs. VCOM AND TEMPERATURE
MAX4758 toc04 MAX4758 toc05
MAX4758/MAX4759
ON-RESISTANCE vs. VCOM
10 MAX4759 (N_5-N_8) 9 8 7 RON () RON () 6 5 4 3 2 1 0 V+ = 3V 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 VCOM (V) 0 0 V+ = 2.7V V+ = 5V 1 V+ = 2V V+ = 2.3V 3 V+ = 1.8V 5
ON-RESISTANCE vs. VCOM AND TEMPERATURE
MAX4759 (N_5-N_8) V+ = 5V
MAX4758 toc06
5
MAX4759 (N_5-N_8) V+ = 3V 4 TA = +85C TA = +25C
4
RON ()
3
TA = +85C
TA = +25C
2
2
TA = -40C
1 TA = -40C 0 3.0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 VCOM (V)
0.5
1.0
1.5 VCOM (V)
2.0
2.5
NO/NC OFF-LEAKAGE CURRENT vs. TEMPERATURE
MAX4758 toc07
COM ON-LEAKAGE CURRENT vs. TEMPERATURE
MAX4758 toc08
CHARGE INJECTION vs. VCOM
140 CHARGE INJECTION (pC) 120 100 80 60 40 20 V+ = 3V MAX4758, MAX4759 (N_1-N_4) CL = 1nF V+ = 5V
MAX4758 toc09
10 V+ = 3V / 5V NO/NC OFF-LEAKAGE CURRENT (nA)
10 V+ = 3V / 5V COM ON-LEAKAGE CURRENT (nA)
160
1 V+ = 5V 0.1 V+ = 3V 0.01
1
0.1
0.01
0.001 -40 -15 10 35 60 85 TEMPERATURE (C)
0.001 -40 -15 10 35 60 85 TEMPERATURE (C)
0 0 1 2 3 4 5 VCOM (V)
CHARGE INJECTION vs. VCOM
MAX4758 toc10
SUPPLY CURRENT vs. SUPPLY VOLTAGE
3.5 SUPPLY CURRENT (nA) 3.0 2.5 2.0 1.5 1.0
MAX4758 toc11
60 50 CHARGE INJECTION (pC) 40 V+ = 5V 30 20 10 0 0 1 2 3 4 5 VCOM (V) V+ = 3V MAX4759 (N_5-N_8) CL = 1nF
4.0
0.5 0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 SUPPLY VOLTAGE (V)
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5
Quad DPDT Audio/Data Switches in UCSP/QFN MAX4758/MAX4759
Typical Operating Characteristics (continued)
(V+ = 3V, TA = +25C, unless otherwise noted.)
LOGIC THRESHOLD vs. SUPPLY VOLTAGE
MAX4758 toc12 MAX4758 toc13
SUPPLY CURRENT vs. TEMPERATURE
1000 2.0
TURN-ON/OFF TIMES vs. SUPPLY VOLTAGE
MAX4758, MAX4759 (N_1-N_4) 70 60 tON
MAX4758 toc14 MAX4758 toc17
80
1.6 LOGIC THRESHOLD (V)
SUPPLY CURRENT (nA)
V+ = 5V 10
1.2 VIH VIL 0.8
tON/tOFF (ns)
50 40 30 20 10 tOFF
V+ = 3V 0.1
0.4
0.001 -40 -15 10 35 60 85 TEMPERATURE (C)
0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 SUPPLY VOLTAGE (V)
0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 SUPPLY VOLTAGE (V)
TURN-ON/OFF TIMES vs. SUPPLY VOLTAGE
MAX4758 toc15
TURN-ON/OFF TIMES vs. TEMPERATURE
MAX4759 (N_5-N_8) tON, V+ = 3V
MAX4758 toc16
TURN-ON/OFF TIMES vs. TEMPERATURE
70 MAX4758, MAX4759 (N_1-N_4) 60 tON, V+ = 3V 50 tON/tOFF (ns) 40 30 20 tOFF, V+ = 3V 10 tOFF, V+ = 5V 0 tON, V+ = 5V
80 MAX4759 (N_5-N_8) 70 tON 60 tON/tOFF (ns) 50 40 30 20 10 0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 tOFF
60 50 40 30 20
tON/tOFF (ns)
tON, V+ = 5V
tOFF, V+ = 3V 10 tOFF, V+ = 5V 0 5.5 -40 -15 10 35 60 85 SUPPLY VOLTAGE (V) TEMPERATURE (C)
-40
-15
10
35
60
85
TEMPERATURE (C)
6
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Quad DPDT Audio/Data Switches in UCSP/QFN
Typical Operating Characteristics (continued)
(V+ = 3V, TA = +25C, unless otherwise noted.)
SKEW vs. SUPPLY VOLTAGE
MAX4758 toc18
MAX4758/MAX4759
SKEW vs. TEMPERATURE
MAX4758 toc19
FREQUENCY RESPONSE
0 -20 ON-LOSS (dB) -40 -60 -80 -100 OFF-ISOLATION ON-LOSS CROSSTALK
MAX4758 toc20
600 500 400 SKEW (ps) 300 200 100 0 1.5
MAX4759 (N_5-N_8) INPUT RISE/FALL TIME = 15ns CL = 50pF, FIGURE 3
600 500 400 SKEW (ps) 300 200 100 0 MAX4759 (N_5-N_8) INPUT RISE/FALL TIME = 15ns CL = 50pF, FIGURE 3 V+ = 4.2V
20
-120 -40 -15 10 35 60 85
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
-140 0.0001
MAX4758, MAX4759 (N_1-N_4) V+ = 3V / 5V 0.01 1 100
SUPPLY VOLTAGE (V)
TEMPERATURE (C)
FREQUENCY (MHz)
FREQUENCY RESPONSE
MAX4758 toc21
TOTAL HARMONIC DISTORTION vs. FREQUENCY
MAX4758 toc22
TOTAL HARMONIC DISTORTION vs. FREQUENCY
MAX4759 (N_5-N_8) RL = 600
MAX4758 toc23
20 0 -20 ON-LOSS (dB) -40 CROSSTALK -60 -80 OFF-ISOLATION -100 -120 MAX4759 (N_5-N_8) V+ = 3V / 5V ON-LOSS
1
MAX4758, MAX4759 (N_1-N_4) V+ = 3V, RL = 32
1
0.1 THD (%) THD (%) 0.01 0.001 10 100 1k FREQUENCY (Hz) 10k 100k 0.1
-140 0.0001
0.01
1
100
0.01 10 100 1k FREQUENCY (Hz) 10k 100k
FREQUENCY (MHz)
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7
Quad DPDT Audio/Data Switches in UCSP/QFN MAX4758/MAX4759
Pin Description
PIN MAX4758 THIN QFN 1 2 3 4 5 6 7 8 9 10 11, 14, 17, 29, 32, 35 12 13 15 16 18 19 20 21 22 23 24 25 26 27 28 30 31 33 34 36 -- EP -- UCSP A1 B2 A2 A3 C3, D4 A4 A5 B5 A6 B6 -- C5 C6 D6 D5 E6 F6 E5 F5 F4 C4, D3 F3 F2 E2 F1 E1 D2 D1 C1 C2 B1 MAX4759 THIN QFN 1 2 3 4 5 6 7 8 9 10 11, 14, 17, 29, 32, 35 12 13 15 16 18 19 20 21 22 23 24 25 26 27 28 30 31 33 34 36 -- EP -- UCSP A1 B2 A2 A3 C3, D4 A4 A5 B5 A6 B6 -- C5 C6 D6 D5 E6 F6 E5 F5 F4 C4, D3 F3 F2 E2 F1 E1 D2 D1 C1 C2 B1 NC1 COM2 NC2 INA V+ INB NC3 COM3 NC4 COM4 N.C. NO3 NO4 NO8 NO7 COM8 NC8 COM7 NC7 IND GND INC NC6 COM6 NC5 COM5 NO6 NO5 NO1 NO2 COM1 EN EP Analog Switch 1, Normally Closed Terminal 1 Analog Switch 2, Common Terminal 2 Analog Switch 2, Normally Closed Terminal 2 Logic Control Digital Input for Switches 1 and 2 Positive Supply Voltage Logic Control Digital Input for Switches 3 and 4 Analog Switch 3, Normally Closed Terminal 3 Analog Switch 3, Common Terminal 3 Analog Switch 4, Normally Closed Terminal 4 Analog Switch 4, Common Terminal 4 No Connection. Not internally connected. Analog Switch 3, Normally Open Terminal 3 Analog Switch 4, Normally Open Terminal 4 Analog Switch 8, Normally Open Terminal 8 Analog Switch 7, Normally Open Terminal 7 Analog Switch 8, Common Terminal 8 Analog Switch 8, Normally Closed Terminal 8 Analog Switch 7, Common Terminal 7 Analog Switch 7, Normally Closed Terminal 7 Logic Control Digital Input for Switches 7 and 8 Ground Logic Control Digital Input for Switches 5 and 6 Analog Switch 6, Normally Closed Terminal 2 Analog Switch 6, Common Terminal 6 Analog Switch 5, Normally Closed Terminal 5 Analog Switch 5, Common Terminal 5 Analog Switch 6, Normally Open Terminal 6 Analog Switch 5, Normally Open Terminal 5 Analog Switch 1, Normally Open Terminal 1 Analog Switch 2, Normally Open Terminal 2 Analog Switch 1, Common Terminal 1 Output Enable, Active Low Exposed Pad. Connect to GND NAME FUNCTION
8
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Quad DPDT Audio/Data Switches in UCSP/QFN
Detailed Description
The MAX4758/MAX4759 quad DPDT analog switches operate from a single +1.8V to +5.5V supply. These devices are fully specified for +3V applications. The MAX4758/MAX4759 (switches 1-4) have a guaranteed 0.5 on-resistance, making them ideal for audio switching applications. The MAX4759 also includes four single-pole/double-throw (SPDT) switches (switches 5-8) that have a guaranteed 0.2 on-resistance, a low 25pF capacitance, 0.2ns change in skew making them ideal for either data or audio switching applications. These switches have four logic inputs to control two switches in pairs.
POSITIVE SUPPLY V+ D1
MAX4758/MAX4759
MAX4758 MAX4759
NO COM
Applications Information
Digital Control Inputs
The MAX4758/MAX4759 logic inputs accept up to +5.5V regardless of the supply voltage. For example, with a +3.3V supply, IN_ can be driven low to GND and high to +5.5V, which allows mixed logic levels in a system. Driving the control logic inputs rail-to-rail also minimizes power consumption. For a +3V supply voltage, the logic thresholds are 0.5V (low) and 1.4V (high).
GND
Figure 1. Overvoltage Protection Using an External Blocking Diode
Analog Signal Levels
Analog signal inputs over the full voltage range (0V to V+) are passed through the switch with minimal change in onresistance (see the Typical Operating Characteristics). The switches are bidirectional so NO_, NC_, and COM_ can be either inputs or outputs.
cially if the input signal is not current limited. If sequencing is not possible, and the input signal is not current limited to less than 20mA, add a small-signal diode (Figure 1). Adding the diode reduces the analog range to a diode drop (0.7V) below V+ and increases the on-resistance slightly. The maximum supply voltage must not exceed +6V at any time.
UCSP Applications Information
For the latest application details on UCSP construction, dimensions, tape carrier information, PC board techniques, bump-pad layout, and recommended reflow temperature profile, as well as the latest information on reliability testing results, go to the Maxim website at www.maxim-ic.com/ucsp for the Application Note, "UCSP--A Wafer-Level Chip-Scale Package".
Power-Supply Bypassing
Power-supply bypassing improves noise margin and prevents switching noise from propagating from the V+ supply to other components. A 0.1F capacitor connected from V+ to GND is adequate for most applications.
Power-Supply Sequencing
CMOS devices require proper power-supply sequencing. Always apply V+ before the analog signals, espe-
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9
Quad DPDT Audio/Data Switches in UCSP/QFN MAX4758/MAX4759
Timing Circuits/Timing Diagrams
MAX4758 MAX4759
VN_ NO_ OR NC_ V+ V+ COM_ LOGIC INPUT VOUT RL IN_ LOGIC INPUT GND SWITCH OUTPUT 0V CL VOUT 0.9 x V0UT t OFF 0.9 x VOUT V+ 0V 50%
t r < 5ns t f < 5ns 50%
t ON
VOUT = VN_
CL INCLUDES FIXTURE AND STRAY CAPACITANCE. RL RL + RON
(
)
IN DEPENDS ON SWITCH CONFIGURATION; INPUT POLARITY DETERMINED BY SENSE OF SWITCH.
Figure 2. Switching Time
MAX4758 MAX4759
VN_ NC_ NO_ IN_ LOGIC INPUT GND
V+ V+ COM_ RL VOUT LOGIC INPUT
V+ 50% 0V
CL
VOUT tBBM CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
0.9 x VOUT
Figure 3. Break-Before-Make Interval
10
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Quad DPDT Audio/Data Switches in UCSP/QFN
Timing Circuits/Timing Diagrams (continued)
tri 50% TxD+ Rs A B CL INPUT A90% 50% 10% tfi INPUT A 10% tskew_i
MAX4758/MAX4759
90%
tro 50%
90%
TxDRs Rs = 39 CL = 50pF
A-
BCL
OUTPUT B OUTPUT B-
10%
tskew_o 90% 50% 10% tfo
|tro - tri| DELAY DUE TO SWITCH FOR RISING INPUT AND RISING OUTPUT SIGNALS. |tfo - tfi| DELAY DUE TO SWITCH FOR FALLING INPUT AND FALLING OUTPUT SIGNALS.
|tskew_o| CHANGE IN SKEW THROUGH THE SWITCH FOR OUTPUT SIGNALS. |tskew_i| CHANGE IN SKEW THROUGH THE SWITCH FOR INPUT SIGNALS.
Figure 4. Input/Output Skew Timing Diagram
V+
MAX4758 MAX4759
RGEN NC_ OR NO_ GND IN_
VOUT VOUT VOUT CL IN OFF ON OFF
V+ COM_
V GEN
VIL TO VIH
IN
OFF
ON Q = V OUT C L
OFF
LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES THAT HAVE THE OPPOSITE LOGIC SENSE.
Figure 5. Charge Injection ______________________________________________________________________________________ 11
Quad DPDT Audio/Data Switches in UCSP/QFN MAX4758/MAX4759
Timing Circuits/Timing Diagrams (continued)
+5V 10nF OFF-ISOLATION = 20log NETWORK ANALYZER 0V OR V+ IN_ V+ COM1 VIN 50 50 ON-LOSS = 20log VOUT VIN VOUT VIN VOUT VIN
NC1 50
MAX4758 MAX4759
NO1* GND
CROSSTALK = 20log VOUT MEAS REF
50
50
MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT IC TERMINALS. OFF-ISOLATION IS MEASURED BETWEEN COM_ AND OFF NO_ OR NC_ TERMINAL ON EACH SWITCH. ON-LOSS IS MEASURED BETWEEN COM_ AND ON NO_ OR NC_ TERMINAL ON EACH SWITCH. CROSSTALK IS MEASURED FROM ONE CHANNEL TO THE OTHER CHANNEL. SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED.
*FOR CROSSTALK THIS PIN IS NO2. NC2 AND COM2 ARE OPEN.
Figure 6. On-Loss, Off-Isolation, and Crosstalk
Typical Operating Circuit
10nF V+ INA NO1 COM1 INTERNAL SPEAKER
V+ COM_
NC1 NO2
MAX4758 MAX4759
IN VIL OR VIH
NC2 COM2 EXTERNAL SPEAKER
CAPACITANCE METER f = 1MHz
NC_ or NO_ GND
IND NO7
COM7 SWITCHING DATA SIGNALS
NC7 NO8
Figure 7. Channel On-/Off-Capacitance
NC8
COM8
MAX4759
12
______________________________________________________________________________________
Quad DPDT Audio/Data Switches in UCSP/QFN
Pin Configurations/Truth Tables
TOP VIEW MAX4758/MAX4759 (BUMP SIDE DOWN)
COM1 N.C. NO2 NO1 N.C. NO5 NO6 COM5 N.C.
1 2 3 4 5 6
MAX4758/MAX4759
36
35
34
33
32
31
30
29
A NC1 COM1 B NO1 C NO5 D COM5 E NC5 F NC6 INC IND NC7 NC8 COM6 COM7 COM8 N06 GND V+ NO7 NO8 NO2 V+ GND NO3 NO4 INA V+ INB NC3 COM3 NC4 COM2 COM3 COM4 COM2 NC2
28
NC1
NC2
INA
INB
NC3
NC4
1 2 3 4 5 6 7 8 9 17 10 11 12 13 14 15 16 18
27 26 25 24
NC5 COM6 NC6 INC GND IND NC7 COM7 NC8
MAX4758 MAX4759
23 22 21 20 19
N.C.
N.C.
COM4
UCSP MAX4758/MAX4759
INA NO1/NO2 OFF LOW ON HIGH INB NO3/NO4 OFF LOW ON HIGH INC NO5/NO6 LOW OFF HIGH ON IND NO7/NO8 OFF LOW ON HIGH NC1/NC2 ON OFF NC3/NC4 ON OFF NC5/NC6 ON OFF NC7/NC8 ON OFF
THIN QFN
NOTE: EXPOSED PADDLE CONNECTED TO GND OR FLOATING.
Chip Information
TRANSISTOR COUNT: 1432 PROCESS: CMOS
______________________________________________________________________________________
COM8
N.C.
NO3
NO4
NO8
NO7
13
Quad DPDT Audio/Data Switches in UCSP/QFN MAX4758/MAX4759
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.)
QFN THIN 6x6x0.8.EPS
E2 L e
D2 D D/2 k
C L
b D2/2
E/2 E2/2 E (NE-1) X e
C L
k
e (ND-1) X e
L
e L
C L C L
L1 L
e
A1
A2
A
PACKAGE OUTLINE 36, 40, 48L THIN QFN, 6x6x0.8mm
21-0141
E
1
2
NOTES: 1. DIMENSIONING & TOLERANCING CONFORM TO ASME Y14.5M-1994. 2. ALL DIMENSIONS ARE IN MILLIMETERS. ANGLES ARE IN DEGREES. 3. N IS THE TOTAL NUMBER OF TERMINALS. 4. THE TERMINAL #1 IDENTIFIER AND TERMINAL NUMBERING CONVENTION SHALL CONFORM TO JESD 95-1 SPP-012. DETAILS OF TERMINAL #1 IDENTIFIER ARE OPTIONAL, BUT MUST BE LOCATED WITHIN THE ZONE INDICATED. THE TERMINAL #1 IDENTIFIER MAY BE EITHER A MOLD OR MARKED FEATURE. 5. DIMENSION b APPLIES TO METALLIZED TERMINAL AND IS MEASURED BETWEEN 0.25 mm AND 0.30 mm FROM TERMINAL TIP. 6. ND AND NE REFER TO THE NUMBER OF TERMINALS ON EACH D AND E SIDE RESPECTIVELY. 7. DEPOPULATION IS POSSIBLE IN A SYMMETRICAL FASHION. 8. COPLANARITY APPLIES TO THE EXPOSED HEAT SINK SLUG AS WELL AS THE TERMINALS. 9. DRAWING CONFORMS TO JEDEC MO220, EXCEPT FOR 0.4mm LEAD PITCH PACKAGE T4866-1. 10. WARPAGE SHALL NOT EXCEED 0.10 mm.
PACKAGE OUTLINE 36, 40, 48L THIN QFN, 6x6x0.8mm
21-0141
E
2
2
14
______________________________________________________________________________________
Quad DPDT Audio/Data Switches in UCSP/QFN
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.)
36L,UCSP.EPS
MAX4758/MAX4759
PACKAGE OUTLINE, 6x6 UCSP 21-0082 J
1 1
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 15 (c) 2004 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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