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19-0631; Rev 1; 3/07
Low-Charge Injection, 8-Channel, High-Voltage Analog Switches
General Description
The MAX4800/MAX4801/MAX4802 provide high-voltage switching on eight channels for ultrasonic imaging and printer applications. The devices utilize BCDMOS process technology to provide eight high-voltage lowcharge-injection SPST switches, controlled by a digital interface. Data is clocked into an internal 8-bit shift register and retained by a programmable latch with enable and clear inputs. A power-on reset function ensures that all switches are open on power-up. The MAX4800/MAX4801/MAX4802 operate with a wide range of high-voltage supplies including: VPP/VNN = +100V/-100V, +185V/-15V, and +40V/-160V. The digital interface operates from a separate V DD supply from +2.7V to +13.2V. Digital inputs DIN, CLK, LE, and CLR are +13.2V tolerant, independent of the VDD supply voltage. The MAX4802 provides integrated 35k bleed resistors on each switch terminal to discharge capacitive loads. The MAX4800 and MAX4802 are drop-in replacements for the Supertex HV20220 and HV232. The devices are available in the 48-pin TQFP, 26-bump CSBGA, 28-pin PLCC, and 48-pin TQFN packages. The MAX4801 is a drop-in replacement for the Supertex HV20320 and is available in the 28-pin PLCC package. All devices are specified for the commercial 0C to +70C temperature range.
Features
Pin-Compatible Replacement for Supertex HV20220 (MAX4800) Pin-Compatible Replacement for Supertex HV20320 (MAX4801) Pin-Compatible Replacement for Supertex HV232 (MAX4802) Flexible High-Voltage Supplies Up to VPP - VNN = 200V Low-Charge Injection, Low-Capacitance 22 Switches DC to 10MHz Analog-Signal Frequency Range -77dB Off Isolation at 5MHz Low 10A Quiescent Current Integrated Bleed Resistors (MAX4802) Available in PLCC, TQFP, TQFN, and CSBGA Packages
MAX4800/MAX4801/MAX4802
Applications
Ultrasound Imaging Printers
Ordering Information/Selector Guide
PART MAX4800CCM MAX4800CQI MAX4800CTM* MAX4800CXZ* MAX4801CQI* MAX4802CCM MAX4802CQI MAX4802CTM* MAX4802CXZ* BLEED RESISTORS No No No No No Yes Yes Yes Yes SECOND SOURCE HV20220FG HV20220PJ HV220** HV220** HV20320PJ HV232FG HV232PJ HV230** HV230GA PIN-PACKAGE 48 TQFP 28 PLCC 48 TQFN 26 CSBGA 28 PLCC 48 TQFP 28 PLCC 48 TQFN 26 CSBGA PACKAGE CODE C48-6 Q28-4 T4866-1 X07265-1 Q28-4 C48-6 Q28-4 T4866-1 X07265-1
Note: All devices are specified over the commercial 0C to +70C temperature range. *Future product--contact factory for availability. **Not pin-for-pin compatible. ________________________________________________________________ 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.
Low-Charge Injection, 8-Channel, High-Voltage Analog Switches MAX4800/MAX4801/MAX4802
ABSOLUTE MAXIMUM RATINGS
(All voltages referenced to GND.) VDD Logic-Supply Voltage .....................................-0.5V to +15V VPP - VNN Supply Voltage ....................................................220V VPP Positive-Supply Voltage ........................-0.5V to VNN + 220V VNN Negative-Supply Voltage ..............................+0.5V to -220V Logic Inputs LE, CLR, CLK, DIN ............................-0.5V to +15V DOUT ............................................................-0.5V to VDD + 0.5V RGND (MAX4802) ................................................-4.5V to + 0.5V COM_, NO_.................................................................VNN to VPP Continuous Power Dissipation (TA = +70C) 28-Pin PLCC (derate 10.5mW/C above +70C) ..........842mW 48-Pin TQFP (derate 22.7mW/C above +70C).........1818mW 48-Pin TQFN (derate 27.8mW/C above +70C) ........2222mW 26-Pin CSBGA (derate 11.8mW/C above +70C) .......941mW Operating Temperature Range...............................0C to +70C Storage Temperature Range .............................-65C to +150C Junction Temperature Range ..........................................+150C Lead Temperature (Soldering, 10s).................................+300C Bump Temperature (Soldering) Lead-Free......................+260C Bump Temperature (Soldering) Lead ..............................+245C
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
(VDD = +2.7V to +13.2V, VPP = +40V to VNN + 200V, VNN = -15V to -160V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Note 1)
PARAMETER ANALOG SWITCH Analog Signal Range VCOM_, VNO_ (Note 2) TA = 0C ICOM = 5mA VPP = +40V, VNN = -160V, VCOM_ = 0 TA = +25C TA = +70C ICOM = 200mA TA = 0C TA = +25C TA = +70C TA = 0C ICOM = 5mA Small-Signal Switch On-Resistance RONS VPP = +100V, VNN = -100V, VCOM_ = 0 TA = +25C TA = +70C ICOM = 200mA TA = 0C TA = +25C TA = +70C VPP = +160V, VNN = -40V or VPP = +185V, VNN = -15V, VCOM _= 0 Small-Signal Switch On-Resistance Matching Large-Signal Switch On-Resistance Shunt Resistance RONS RONL RINT TA = 0C ICOM = 5mA TA = +25C TA = +70C ICOM = 200mA TA = 0C TA = +25C TA = +70C 5 15 30 35 50 16 20 18 22 22 26 VNN + 10 VPP 10 30 38 48 25 27 32 25 27 30 18 24 27 23 25 30 22 25 27 20 % k V SYMBOL CONDITIONS MIN TYP MAX UNITS
VPP = +100V, VNN = -100V, VCOM_ = 0, ICOM = 5mA VCOM_ = VPP - 10V, ICOM = 1A NO_ or COM_ to RGND (MAX4802), switch off
2
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Low-Charge Injection, 8-Channel, High-Voltage Analog Switches
ELECTRICAL CHARACTERISTICS (continued)
(VDD = +2.7V to +13.2V, VPP = +40V to VNN + 200V, VNN = -15V to -160V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Note 1)
PARAMETER SYMBOL CONDITIONS TA = +25C TA = TMIN to TMAX 100 100 3 2 2 300 30 750 mA 3 A MIN TYP 1 MAX 4 10 A UNITS
MAX4800/MAX4801/MAX4802
Switch-Off Leakage
VCOM_, VNO_ = VPP - 10V or ICOM_(OFF), unconnected; INO_(OFF) RGND unconnected (MAX4802)
Switch-Off DC Offset Switch-On DC Offset Switch-Output Peak Current (Note 3)
RL = 100k (MAX4800/MAX4801), No load (MAX4802) RL =100k (MAX4800/MAX4801), No load (MAX4802) TA = 0C ICOM_ duty cycle 0.1% TA = +25C TA = +70C VPP - VNN 200V COM_, NO1-NO7
300 500
mV mV
Switch-Output Isolation Diode Current (Note 3)
300ns pulse width, 2% duty cycle
VPP - VNN 200V, NO0 VPP - VNN 160V COM_, NO_
SWITCH DYNAMIC CHARACTERISITICS Off-Isolation (Note 3) Crosstalk (Note 3) COM_, NO_ Off-Capacitance (Note 3) COM_ On-Capacitance (Note 3) Output-Voltage Spike (Note 3) Charge Injection LOGIC LEVELS Logic-Input Low Voltage VIL VDD +4.5V VDD < +4.5V VDD +4.5V Logic-Input High Voltage VIH VDD < +4.5V Logic-Input Capacitance (Note 3) Logic-Input Leakage DOUT Low Voltage CIN IIN VOL VDD +4.5V, ISINK = 1mA VDD < +4.5V, ISINK = 0.5mA -1 VDD 1.5 VDD 0.75 10 +1 0.4 0.4 1.5 0.75 V VISO VCT CCOM_
(OFF),
f = 5MHz, RL = 1k, CL = 15pF f = 5MHz, RL = 50 f = 5MHz, RL = 50 VCOM_ = 0, VNO_ = 0, f = 1MHz
-30 -58 -60 4
-33 -77 -80 11 18
dB dB pF
CNO_ (OFF) CCOM_
(ON)
VCOM_ = 0, f = 1MHz RL = 50 VPP = +40V, VNN= -160V, VCOM_ = 0 VPP = +100V, VNN = -100V, VCOM_ = 0 VPP = +160V, VNN = -40V, VCOM_ = 0
20 -150
36
56 +150
pF mV pC
VSPK Q
820 600 350
V
pF A V V
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3
Low-Charge Injection, 8-Channel, High-Voltage Analog Switches MAX4800/MAX4801/MAX4802
ELECTRICAL CHARACTERISTICS (continued)
(VDD = +2.7V to +13.2V, VPP = +40V to VNN + 200V, VNN = -15V to -160V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Note 1)
PARAMETER SYMBOL CONDITIONS VDD +4.5V, ISOURCE = 0.5mA DOUT High Voltage VOH VDD < +4.5V, ISOURCE = 0.25mA POWER SUPPLIES VDD Supply Voltage VPP Supply Voltage VNN Supply Voltage VDD Supply Quiescent Current VDD Supply Dynamic Current VPP Supply Quiescent Current IDDQ IDD IPPQ VIL = 0, VIH = VDD, fCLK = 0 VDD = +5V, VIL = 0, VIH = +5V, fCLK = 5MHz All switches remain on or off, ICOM_(ON) = 5mA VPP = +40V, VNN = -160V 50kHz output switching frequency with no load VPP = +100V, VNN = -100V VPP = +160V, VNN = -40V VNN Supply Quiescent Current INNQ TA = 0C TA = +25C TA = +70C TA = 0C TA = +25C TA = +70C TA = 0C TA = +25C TA = +70C 10 10 2.7 40 -160 13.2 VNN + 200 -15 15 4 50 6.5 6.5 6.5 4.0 4.0 4.0 4.0 4.0 4.0 50 6.5 6.5 6.5 4.0 4.0 4.0 4.0 4.0 4.0 mA A mA V V V A mA A MIN VDD 0.5 VDD 0.5 TYP MAX UNITS V V
VPP Supply Dynamic Current
IPP
All switches remain on or off, ICOM_(ON) = 5mA VPP = +40V, VNN = -160V 50kHz output switching frequency with no load VPP = +100V, VNN = -100V VPP = +160V, VNN = -40V TA = 0C TA = +25C TA = +70C TA = 0C TA = +25C TA = +70C TA = 0C TA = +25C TA = +70C
VNN Supply Dynamic Current
INN
4
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Low-Charge Injection, 8-Channel, High-Voltage Analog Switches
TIMING CHARACTERISTICS
(VDD = +2.7V to +13.2V, VPP = +40V to VNN + 200V, VNN = -15V to -160V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Note 1)
PARAMETER ANALOG SWITCH Turn-On Time Turn-Off Time Output Switching Frequency Maximum VCOM_, VNO_ Slew Rate LOGIC TIMING (Figure 1) Daisy chaining CLK Frequency fCLK No daisy chaining DIN to CLK Setup Time DIN to CLK Hold Time CLK to LE Setup Time LE Low-Pulse Width CLR High-Pulse Width CLK Rise and Fall Times tDS tDH tCS tWL tWC tR, tF VDD +4.5V VDD < +4.5V VDD +4.5V VDD < +4.5V VDD +4.5V VDD < +4.5V VDD +4.5V VDD < +4.5V VDD +4.5V VDD < +4.5V VDD +4.5V (Note 3) VDD < +4.5V (Note 3) VDD = +5V 10%, CL 50pF CLK to DOUT Delay tDO VDD = +3V 10%, CL 50pF TA = 0C TA = +25C TA = +70C TA = TMIN to TMAX 55 60 70 70 VDD +4.5V VDD +4.5V VDD +4.5V VDD < +4.5V 15 40 35 60 150 300 150 300 150 300 1 1 150 150 150 280 ns 5 2.5 10 4 ns ns ns ns ns s MHz tON tOFF fSW dV/dt VNO_ = VPP - 10V, RL = 10k, VNN = -40V to -160V VNO_ = VPP - 10V, RL = 10k, VNN = -40V to -160V Duty cycle = 50% (Note 3) 20 5 5 50 s s kHz V/ns SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX4800/MAX4801/MAX4802
Note 1: Specifications at 0C are guaranteed by correlation and design. Electrical parameters are tested at worst case conditions. Note 2: The analog signal input VCOM_ and VNO_ must satisfy VNN (VCOM_, VNO_) VPP, or remain unconnected during power-up and power-down. Note 3: Guaranteed by characterization; not production tested.
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Low-Charge Injection, 8-Channel, High-Voltage Analog Switches MAX4800/MAX4801/MAX4802
Typical Operating Characteristics
(VDD = +5V, VPP = +100V, VNN = -100V, TA = +25C, unless otherwise noted.)
IDD SUPPLY CURRENT vs. CLOCK FREQUENCY
MAX4800 toc01
OFF-ISOLATION vs. FREQUENCY
-95 OFF-ISOLATION (dB) -90 -85 -80 -75 -70 -65 -60 5 0 1 FREQUENCY (MHz) 10 0 10 RS = RL = 50
MAX4800 toc02
ON-RESISTANCE vs. TEMPERATURE
MAX4800 toc03
4.0 3.5 IDD SUPPLY CURRENT (mA) 3.0 2.5 2.0 1.5 1.0 0.5 0 0.01 0.1 1 DIN = 01010101 DIN = 00000000
-100
30 25 ON-RESISTANCE () 20 15 ISW = 200mA 10 ISW = 5mA
10
20
30
40
50
60
70
CLOCK FREQUENCY (MHz)
TEMPERATURE (C)
ON-RESISTANCE vs. VPP/VNN SUPPLY VOLTAGE
MAX4800 toc04
tDO vs. TEMPERATURE
MAX4800 toc05
SUPPLY CURRENT vs. SWITCHING FREQUENCY
ALL SWITCHES OPERATING ALL SWITCHES CONNECTED TO GND INN IPP 3.0 2.0 1.0 IDD 0
MAX4800 toc06
40 35 ON-RESISTANCE () 30 25 TA = +70C
180 160 140 120 tDO (ns) 100 80 60 VDD = +5V VDD = +3V
6.0 5.0 SUPPLY CURRENT (mA) 4.0
20 15 10 5 0 +40/ -160 +60/ -140 +80/ -120 +100/ +120/ -100 -80 +140/ +160/ -60 -40 TA = 0C TA = +25C
40 20 0 0 10 20 30 40 50 60 70 TEMPERATURE (C)
0
10 20 30 40 50 60 70 80 90 100 SWITCHING FREQUENCY (kHz)
VPP/VNN SUPPLY VOLTAGE (V)
SUPPLY CURRENT vs. VPP/VNN SUPPLY VOLTAGE
ONE SWITCH OPERATING ALL SWITCHES CONNECTED TO GND fSW = 50kHz INN 0.35 IPP 0.30
MAX4800 toc07
LOGIC THRESHOLD vs. VDD SUPPLY VOLTAGE
7 LOGIC THRESHOLD (V) 6 5 4 3 2 RISING FALLING
MAX4800 toc08
0.45
8
0.40 SUPPLY CURRENT (mA)
0.25 1 0.20 +40/ -160 +60/ -140 +80/ -120 +100/ +120/ -100 -80 +140/ +160/ -60 -40 0 2 4 6 8 10 12 14 VDD SUPPLY VOLTAGE (V)
VPP/VNN SUPPLY VOLTAGE (V)
6
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Low-Charge Injection, 8-Channel, High-Voltage Analog Switches
Pin Descriptions
PIN NAME MAX4800 TQFP 1 2, 4, 6, 7, 9, 11, 13, 15, 17, 19, 21, 23, 26, 27, 30, 31, 32, 38, 40, 42, 44, 46, 48 3 5 8 10 12 14 16 18 20 22 24 25 28 29 33 34 35 36 37 39 41 43 45 47 -- MAX4800 TQFN 48 1, 2, 4, 6, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 34, 37, 39, 41, 43, 45, 47 3 5 8 10 12 14 16 18 20 22 24 26 29 30 31 32 33 35 36 38 40 42 44 46 EP MAX4800 CSBGA E4 MAX4800 PLCC 26 MAX4801 PLCC 26 COM5 Analog Switch 5 FUNCTION
MAX4800/MAX4801/MAX4802
D6
9, 11, 15
11, 14, 15
N.C.
No Connection. Not connected internally.
E1 E3 D1 D3 D4 C3 C4 A4 C5 D5 C6 C7 D7 D9 E9 E7 E6 F7 F6 E5 F5 F4 H4 F3 --
27 28 1 2 3 4 5 6 7 8 10 12 13 14 16 17 18 19 20 21 22 23 24 25 --
27 28 1 2 3 4 5 6 7 8 9 10 12 13 16 17 18 19 20 21 22 23 24 25 --
COM4 NO4 COM3 NO3 COM2 NO2 COM1 NO1 COM0 NO0 VPP VNN GND VDD DIN CLK LE CLR DOUT COM7 NO7 COM6 NO6 NO5 EP
Analog Switch 4 Analog Switch 4 Analog Switch 3 Analog Switch 3 Analog Switch 2 Analog Switch 2 Analog Switch 1 Analog Switch 1 Analog Switch 0 Analog Switch 0 Positive High-Voltage Supply. Bypass VPP to GND with a 0.1F or greater ceramic capacitor. Negative High-Voltage Supply. Bypass VNN to GND with a 0.1F or greater ceramic capacitor. Ground Digital-Supply Voltage. Bypass VDD to GND with a 0.1F or greater ceramic capacitor. Serial Data Input Serial Clock Input Latch Enable Input, Active Low Latch Clear Input Serial Data Output Analog Switch 7 Analog Switch 7 Analog Switch 6 Analog Switch 6 Analog Switch 5 Exposed Paddle. Connect exposed paddle to VNN.
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7
Low-Charge Injection, 8-Channel, High-Voltage Analog Switches MAX4800/MAX4801/MAX4802
Pin Descriptions (continued)
PIN MAX4802 TQFP 1 2, 4, 6, 7, 9, 11,13, 15, 17, 19, 21, 23, 26, 30, 31, 32, 38, 40, 42, 44, 46, 48 3 5 8 10 12 14 16 18 20 22 24 25 27 28 29 33 34 35 36 37 39 41 43 45 47 -- MAX4802 TQFN 48 1, 2, 4, 6, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 34, 37, 39, 41, 43, 45, 47 3 5 8 10 12 14 16 18 20 22 24 26 28 29 30 31 32 33 35 36 38 40 42 44 46 EP MAX4802 CSBGA E4 MAX4802 PLCC 26 NAME FUNCTION
COM5
Analog Switch 5
--
9, 15
N.C.
Not Connected Internally
E1 E3 D1 D3 D4 C3 C4 A4 C5 D5 C6 C7 D6 D7 D9 E9 E7 E6 F7 F6 E5 F5 F4 H4 F3 --
27 28 1 2 3 4 5 6 7 8 10 12 11 13 14 16 17 18 19 20 21 22 23 24 25 --
COM4 NO4 COM3 NO3 COM2 NO2 COM1 NO1 COM0 NO0 VPP VNN RGND GND VDD DIN CLK LE CLR DOUT COM7 NO7 COM6 NO6 NO5 EP
Analog Switch 4 Analog Switch 4 Analog Switch 3 Analog Switch 3 Analog Switch 2 Analog Switch 2 Analog Switch 1 Analog Switch 1 Analog Switch 0 Analog Switch 0 Positive High-Voltage Supply. Bypass VPP to GND with a 0.1F or greater ceramic capacitor. Negative High-Voltage Supply. Bypass VNN to GND with a 0.1F or greater ceramic capacitor. Bleed Resistor Ground Ground Digital-Supply Voltage. Bypass VDD to GND with a 0.1F or greater ceramic capacitor. Serial Data Input Serial Clock Input Latch Enable Input, Active Low Latch Clear Input Serial Data Output Analog Switch 7 Analog Switch 7 Analog Switch 6 Analog Switch 6 Analog Switch 5 Exposed Paddle. Connect exposed paddle to VNN.
8
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Low-Charge Injection, 8-Channel, High-Voltage Analog Switches MAX4800/MAX4801/MAX4802
DIN DN+1 50% DN 50% DN-1
tWL LE 50% tCS CLK tDS tDO 50% tDH 50% 50%
DOUT
ON SWITCH OFF tOFF 10%
tON 90%
CLR
50% tWC
50%
Figure 1. Serial Interface Timing
Detailed Description
The MAX4800/MAX4801/MAX4802 provide high-voltage switching on eight channels for ultrasound imaging and printer applications. The devices utilize BCDMOS process technology to provide eight high-voltage lowcharge-injection SPST switches, controlled by a digital interface. Data is clocked into an internal 8-bit shift register and retained by a programmable latch with enable and clear inputs. A power-on reset function ensures that all switches are open on power-up. The MAX4800/MAX4801/MAX4802 operate with a wide range of high-voltage supplies including: V PP/VNN = +100V/-100V, +185V/-15V, or +40V/-160V. The digital interface operates from a separate VDD supply from +2.7V to +13.2V. Digital inputs DIN, CLK, LE, and CLR are +13.2V tolerant, independent of the VDD supply voltage. The MAX4802 provides integrated 35k bleed
resistors on each switch terminal to discharge capacitive loads. The MAX4800 and MAX4802 are drop-in replacements for the Supertex HV20220 and HV232, respectively. The MAX4801 is a drop-in replacement for the Supertex HV20320.
Analog Switch
The MAX4800/MAX4801/MAX4802 allow a peak-topeak analog signal range from VNN + 10V to VPP - 10V. Analog switch inputs must be unconnected, or satisfy V NN (V COM_ , V NO_ ) V PP during power-up and power-down. High-Voltage Supplies The MAX4800/MAX4801/MAX4802 allow a wide range of high-voltage supplies. The devices operate with VNN from -160V to -15V and VPP from +40V to VNN + 200V.
9
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Low-Charge Injection, 8-Channel, High-Voltage Analog Switches MAX4800/MAX4801/MAX4802
LE
CLK
DIN
D7 MSB
D6
D5
D4
D3
D2
D1
D0 LSB
DOUT
D7
D6
D5
D4
D3
D2
D1
D0
D7
DATA FROM PREVIOUS DATA BYTE POWER-UP DEFAULT: D7-D0 = 0
Figure 2. Latch Enable Interface Timing
When VNN is connected to GND (single-supply applications), the devices operate with VPP up to +200V. The VPP and VNN high-voltage supplies are not required to be symmetrical, but the voltage difference VPP - VNN must not exceed 200V. Bleed Resistors (MAX4802) The MAX4802 features integrated 35k bleed resistors to discharge capacitive loads such as piezoelectric transducers. Each analog switch terminal is connected to RGND with a bleed resistor.
Latch Enable (LE) Drive LE logic-low to change the contents of the latch and update the state of the high-voltage switches (Figure 2). Drive LE logic-high to freeze the contents of the latch and prevent changes to the switch states. To reduce noise due to clock feedthrough, drive LE logichigh while data is clocked into the shift register. After the data shift register is loaded with valid data, pulse LE logic-low to load the contents of the shift register into the latch. Latch Clear (CLR) The MAX4800/MAX4801/MAX4802 feature a latch clear input. Drive CLR logic-high to reset the contents of the latch to zero and open all switches. CLR does not affect the contents of the data shift register. Pulse LE logic-low to reload the contents of the shift register into the latch. Power-On Reset The MAX4800/MAX4801/MAX4802 feature a power-on reset circuit to ensure all switches are open at poweron. The internal 8-bit serial shift register and latch are set to zero on power-up.
Serial Interface
The MAX4800/MAX4801/MAX4802 are controlled by a serial interface with an 8-bit serial shift register and transparent latch. Each of the eight data bits controls a single analog switch (see Table 1). Data on DIN is clocked with the most significant bit (MSB) first into the shift register on the rising edge of CLK. Data is clocked out of the shift register onto DOUT on the rising edge of CLK. DOUT reflects the status of DIN, delayed by eight clock cycles (see Figures 1 and 2).
10
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Low-Charge Injection, 8-Channel, High-Voltage Analog Switches MAX4800/MAX4801/MAX4802
Table 1. Serial Interface Programming
DATA BITS CONTROL BITS FUNCTION
D0 (LSB) L H
D1
D2
D3
D4
D5
D6
D7 (MSB)
LE L L L L L L L L L L L L L L L L H X
CLR L L L L L L L L L L L L L L L L L H
SW0 OFF ON
SW1
SW2
SW3
SW4
SW5
SW6
SW7
L H L H L H L H L H L H L H X X
OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF OFF HOLD PREVIOUS STATE OFF OFF OFF OFF OFF OFF
X X
X X
X X
X X
X X
X X
X X
X = Don't Care
Applications Information
Logic Levels
The MAX4800/MAX4801/MAX4802 digital interface inputs CLK, DIN, LE, and CLR are tolerant of up to +13.2V, independent of the VDD supply voltage, allowing compatibility with higher voltage controllers.
Supply Sequencing and Bypassing
The MAX4800/MAX4801/MAX4802 do not require special sequencing of the VDD, VPP, and VNN supply voltages; however, analog switch inputs must be unconnected, or satisfy VNN (VCOM_, VNO_) VPP during power-up and power-down. Bypass VDD, VNN, and VPP to GND with a 0.1F ceramic capacitor as close to the device as possible.
Daisy Chaining Multiple Devices
Digital output DOUT is provided to allow the connection of multiple MAX4800/MAX4801/MAX4802 devices by daisy chaining (Figure 3). Connect each DOUT to the DIN of the subsequent device in the chain. Connect CLK, LE, and CLR inputs of all devices, and drive LE logic-low to update all devices simultaneously. Drive CLR high to open all the switches simultaneously. Additional shift registers may be included anywhere in series with the MAX4800/MAX4801/MAX4802 data chain.
Exposed Paddle
The MAX4800 and MAX4802 provide an exposed paddle for improved thermal performance in the TQFN package. Connect the exposed paddle to VNN.
Chip Information
PROCESS: BCDMOS CONNECT EXPOSED PADDLE TO VNN
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11
Low-Charge Injection, 8-Channel, High-Voltage Analog Switches MAX4800/MAX4801/MAX4802
U10 DIN DIN DOUT DIN U11 DOUT DIN U1n DOUT
MAX4800
CLK LE CLK LE CLK LE
MAX4800
CLK LE
MAX4800
CLR
CLR
CLR
CLR
Figure 3. Interfacing Multiple Devices by Daisy-Chaining
Functional Diagrams
VDD VPP
MAX4800 MAX4801
LEVEL SHIFTER DIN CLK DOUT LEVEL SHIFTER CLR LE SHIFT REGISTER LATCH
COM0
NO0
COM7
NO7
GND
VNN
12
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Low-Charge Injection, 8-Channel, High-Voltage Analog Switches
Functional Diagrams (continued)
VDD VPP
MAX4800/MAX4801/MAX4802
MAX4802
COM0 LEVEL SHIFTER DIN CLK DOUT LEVEL SHIFTER CLR LE NO7 SHIFT REGISTER LATCH COM7 NO0
GND
VNN
RGND
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13
Low-Charge Injection, 8-Channel, High-Voltage Analog Switches MAX4800/MAX4801/MAX4802
Pin Configurations
TOP VIEW
N.C. (RGND)
DOUT
GND
N.C.
N.C.
N.C.
CLR
CLK
VDD
VNN
DIN
LE
36 35 34 33 32 31 30 29 28 27 26 25 N.C. 37 COM7 38 N.C 39 NO7 40 N.C. 41 COM6 42 N.C. 43 NO6 44 N.C. 45 NO5 46 N.C. 47 COM5 48 1 2 3 4 5 6 7 8 9 10 11 12 *EP 24 VPP 23 N.C. 22 NO0 21 N.C. 20 COM0 19 N.C. DOUT N.C. COM7 N.C. NO7 N.C. COM6 N.C. NO6 N.C. NO5 N.C.
37 38 39 40 41 42 43 44 45 46 47 48
36 35 34 33 32 31 30 29 28 27 26 25
N.C. N.C. VDD
N.C.
CLR LE
CLK DIN
GND N.C. (RGND) N.C. VNN
24 23 22 21 20 19 18 17 16 15 14 13
VPP N.C. NO0 N.C. COM0 N.C. NO1 N.C. COM1 N.C. NO2 N.C.
MAX4800 MAX4802
18 NO1 17 N.C. 16 COM1 15 N.C. 14 NO2 13 N.C.
MAX4800 MAX4802
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
COM4
COM3
N.C.
NO4
NO3
COM2
1
2
3
4
5
6
7
8
9 10 11 12
COM5 N.C. COM4 N.C. NO4 N.C.
N.C. COM3 N.C. NO3 N.C. COM4
28 27 26
TQFN 6mm x 6mm
*EXPOSED PADDLE CONNECTED TO VNN ()MAX4802 ONLY
TQFP 7mm x 7mm
()MAX4802 ONLY
COM2
COM2
COM3
COM4
COM3
COM5
4 COM1 NO1 COM0 NO0 N.C. VPP N.C. (RGND) 5 6 7 8 9 10 11 12
3
2
1
28
27
26 25 24 23 NO5 NO6 COM6 NO7 COM7 DOUT CLR COM1 NO1 COM0 NO0 VPP VNN N.C. 5 6 7 8 9 10 11
4
3
2
1
COM5
NO3
NO2
NO3
NO2
NO4
NO4
COM2
25 24 23 NO5 NO6 COM6 NO7 COM7 DOUT CLR 22 21 20 19
MAX4800 MAX4802
22 21 20 19
MAX4801
13
14
15
16
17
18
12
13
14
15
16
17
18
LE
N.C.
VDD
N.C.
DIN
GND
N.C.
GND
CLK
PLCC
()MAX4802 ONLY
PLCC
14
______________________________________________________________________________________
CLK
VNN
VDD
DIN
LE
Low-Charge Injection, 8-Channel, High-Voltage Analog Switches
Pin Configurations (continued)
TOP VIEW 1 2 3 4 5 6 7 8 9
MAX4800/MAX4801/MAX4802
A B C D E F G H D1 COM3 E1 COM4 C3 NO2 D3 NO3 E3 NO4 F3 NO5
A4 NO1 MAX4800 MAX4802
C4 COM1 D4 COM2 E4 COM5 F4 COM6
C5 COM0 D5 E5 COM7 F5 NO7
C6 VPP D6 E6 LE F6 DOUT
C7 VNN D7 E7 CLK F7 CLR D9 VDD E9 DIN
NO0 N.C. (RGND) GND
H4 NO6
CSBGA
()MAX4802 ONLY
______________________________________________________________________________________
15
Low-Charge Injection, 8-Channel, High-Voltage Analog Switches MAX4800/MAX4801/MAX4802
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.)
PLCC.EPS
e
MILLIMETERS INCHES MAX MIN MAX MIN 4.57 0.165 0.180 4.20 0.090 0.120 2.29 3.04 3.96 0.145 0.156 3.69 0.51 --0.020 --0.53 0.013 0.021 0.33 0.81 0.026 0.032 0.66 0.28 0.009 0.011 0.23 1.27 0.050 INCHES MILLIMETERS MIN MAX MIN MAX N 0.385 0.395 9.78 10.03 20 AA 0.350 0.356 8.89 9.04 0.290 0.330 7.37 8.38 5.08 REF 0.200 REF 0.495 0.456 0.430 REF 0.695 0.656 0.630 REF 12.32 11.43 9.91 7.62 17.40 16.51 14.99 12.70 12.57 28 AB 11.58 10.92 REF 17.65 44 AC 16.66 16.00 REF 20.19 19.20 18.54 REF 25.27 24.33 23.62 REF 52 AD
D D1 D3
N
A A1 A2 A3 B B1 C e
D D1 D2 D3
D 0.485 D1 0.450 D2 0.390 D3 0.300 D 0.685 D1 0.650 D2 0.590 D3 0.500 D 0.785 D1 0.750 D2 0.690 D3 0.600 D 0.985 D1 0.950 D2 0.890 D3 0.800
D3 D1 D
A
A2 A1 B1 B A3 D2
0.795 19.94 0.756 19.05 0.730 17.53 REF 15.24 0.995 25.02 0.958 24.13 0.930 22.61 REF 20.32
68 AE
C
NOTES:
1. D1 DOES NOT INCLUDE MOLD FLASH. 2. MOLD FLASH OR PROTRUSIONS NOT TO EXCEED .20mm (.008") PER SIDE. 3. LEADS TO BE COPLANAR WITHIN .10mm. 4. CONTROLLING DIMENSION: MILLIMETER 5. MEETS JEDEC MO047-XX AS SHOWN IN TABLE. 6. N = NUMBER OF PINS.
PROPRIETARY INFORMATION TITLE:
FAMILY PACKAGE OUTLINE: 20L, 28L, 44L, 52L, 68L PLCC
DOCUMENT CONTROL NO. REV.
APPROVAL
21-0049
D
1 1
16
______________________________________________________________________________________
Low-Charge Injection, 8-Channel, High-Voltage Analog Switches
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.)
72L CSBGA.EPS
MAX4800/MAX4801/MAX4802
______________________________________________________________________________________
17
Low-Charge Injection, 8-Channel, High-Voltage Analog Switches MAX4800/MAX4801/MAX4802
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.) TQFPPO.EPS
PACKAGE OUTLINE, 32/48L TQFP, 7x7x1.4mm
21-0054
E
1
2
18
______________________________________________________________________________________
Low-Charge Injection, 8-Channel, High-Voltage Analog Switches MAX4800/MAX4801/MAX4802
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.)
PACKAGE OUTLINE, 32/48L TQFP, 7x7x1.4mm
21-0054
E
2
2
______________________________________________________________________________________
19
Low-Charge Injection, 8-Channel, High-Voltage Analog Switches MAX4800/MAX4801/MAX4802
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.)
20
______________________________________________________________________________________
QFN THIN.EPS
Low-Charge, Injection 8-Channel, High-Voltage Analog Switches
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.)
MAX4800/MAX4801/MAX4802
Revision History
Pages changed at Rev 1: 1, 7, 8, 14, 18, 19, 20, 21
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 ____________________ 21 (c) 2007 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc.
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