19-0631; Rev 2; 5/09 Low-Charge Injection, 8-Channel, High-Voltage Analog Switches 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 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 35kΩ 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, and 28pin PLCC 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 0°C to +70°C 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 22Ω Switches ♦ DC to 10MHz Analog-Signal Frequency Range ♦ -77dB Off Isolation at 5MHz ♦ Low 10µA Quiescent Current ♦ Integrated Bleed Resistors (MAX4802) ♦ Available in PLCC, TQFP, and CSBGA Packages Applications Ultrasound Imaging Printers Ordering Information/Selector Guide PART BLEED RESISTORS SECOND SOURCE PIN-PACKAGE MAX4800CCM No HV20220FG 48 TQFP MAX4800CQI No HV20220PJ 28 PLCC MAX4800CXZ No HV220** MAX4801CQI No HV20320PJ 28 PLCC MAX4802CCM Yes HV232FG 48 TQFP MAX4802CQI Yes HV232PJ 28 PLCC MAX4802CXZ Yes HV230GA 26 CSBGA 26 CSBGA Note: All devices are specified over the commercial 0°C to +70°C temperature range. **Not pin-for-pin compatible. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 1 MAX4800/MAX4801/MAX4802 General Description MAX4800/MAX4801/MAX4802 Low-Charge Injection, 8-Channel, High-Voltage Analog Switches 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 = +70°C) 28-Pin PLCC (derate 10.5mW/°C above +70°C) ..........842mW 48-Pin TQFP (derate 22.7mW/°C above +70°C).........1818mW 26-Pin CSBGA (derate 11.8mW/°C above +70°C) .......941mW Operating Temperature Range...............................0°C to +70°C Storage Temperature Range .............................-65°C to +150°C Junction Temperature Range ..........................................+150°C Lead Temperature (Soldering, 10s).................................+300°C Bump Temperature (Soldering) Lead-Free......................+260°C Bump Temperature (Soldering) Lead ..............................+245°C 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 = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS VPP 10 V ANALOG SWITCH Analog Signal Range VCOM_, VNO_ VNN + 10 (Note 2) TA = 0°C ICOM = 5mA VPP = +40V, VNN = -160V, VCOM_ = 0 ICOM = 200mA ICOM = 5mA Small-Signal Switch On-Resistance RONS VPP = +100V, VNN = -100V, VCOM_ = 0 VPP = +160V, VNN = -40V or VPP = +185V, VNN = -15V, VCOM _= 0 Small-Signal Switch On-Resistance Matching ΔRONS ICOM = 200mA ICOM = 5mA ICOM = 200mA 26 38 TA = +70°C 48 TA = 0°C 25 TA = +25°C 22 27 TA = +70°C 32 TA = 0°C 25 TA = +25°C 22 27 TA = +70°C 30 TA = 0°C 18 TA = +25°C 18 TA = +70°C 27 23 TA = +25°C 20 25 TA = +70°C 30 TA = 0°C 22 TA = +25°C 16 TA = +70°C 5 15 VCOM_ = VPP - 10V, ICOM = 1A Shunt Resistance RINT NO_ or COM_ to RGND (MAX4802), switch off 25 27 VPP = +100V, VNN = -100V, VCOM_ = 0, ICOM = 5mA RONL Ω 24 TA = 0°C Large-Signal Switch On-Resistance 2 30 TA = +25°C 30 35 _______________________________________________________________________________________ 20 % Ω 50 kΩ Low-Charge Injection, 8-Channel, High-Voltage Analog Switches (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 = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS VCOM_, VNO_ = VPP - 10V or ICOM_(OFF), unconnected; INO_(OFF) RGND unconnected (MAX4802) Switch-Off Leakage MIN TA = +25°C TYP MAX 1 4 TA = TMIN to TMAX 10 UNITS µA Switch-Off DC Offset RL = 100kΩ (MAX4800/MAX4801), No load (MAX4802) 100 300 mV Switch-On DC Offset RL =100kΩ (MAX4800/MAX4801), No load (MAX4802) 100 500 mV TA = 0°C Switch-Output Peak Current (Note 3) Switch-Output Isolation Diode Current (Note 3) 3 ICOM_ duty cycle ≤ 0.1% TA = +25°C 2 TA = +70°C 2 300ns pulse width, 2% duty cycle VPP – VNN ≤ 200V COM_, NO1–NO7 300 VPP – VNN ≤ 200V, NO0 30 VPP – VNN ≤ 160V COM_, NO_ 750 3 A mA SWITCH DYNAMIC CHARACTERISITICS Off-Isolation (Note 3) VISO Crosstalk (Note 3) VCT COM_, NO_ Off-Capacitance (Note 3) f = 5MHz, RL = 1kΩ, CL = 15pF -30 -33 f = 5MHz, RL = 50Ω -58 -77 f = 5MHz, RL = 50Ω -60 -80 VCOM_ = 0, VNO_ = 0, f = 1MHz 4 11 18 pF VCOM_ = 0, f = 1MHz 20 36 56 pF +150 mV dB dB CCOM_ (OFF), CNO_ (OFF) COM_ On-Capacitance (Note 3) Output-Voltage Spike (Note 3) CCOM_ (ON) VSPK RL = 50Ω -150 VPP = +40V, VNN= -160V, VCOM_ = 0 Charge Injection Q 820 VPP = +100V, VNN = -100V, VCOM_ = 0 600 VPP = +160V, VNN = -40V, VCOM_ = 0 350 pC LOGIC LEVELS Logic-Input Low Voltage Logic-Input High Voltage VIL 1.5 VDD < +4.5V 0.75 VDD ≥ +4.5V VDD 1.5 VDD < +4.5V VDD 0.75 VIH Logic-Input Capacitance (Note 3) CIN Logic-Input Leakage IIN DOUT Low Voltage VDD ≥ +4.5V VOL -1 V V 10 pF +1 µA VDD ≥ +4.5V, ISINK = 1mA 0.4 V VDD < +4.5V, ISINK = 0.5mA 0.4 V _______________________________________________________________________________________ 3 MAX4800/MAX4801/MAX4802 ELECTRICAL CHARACTERISTICS (continued) MAX4800/MAX4801/MAX4802 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 = +25°C.) (Note 1) PARAMETER DOUT High Voltage SYMBOL CONDITIONS MIN TYP MAX UNITS VDD ≥ +4.5V, ISOURCE = 0.5mA VDD 0.5 V VDD < +4.5V, ISOURCE = 0.25mA VDD 0.5 V VOH POWER SUPPLIES VDD Supply Voltage 2.7 13.2 V VPP Supply Voltage 40 VNN + 200 V -160 VNN Supply Voltage VDD Supply Quiescent Current IDDQ -15 V VIL = 0, VIH = VDD, fCLK = 0 15 µA 4 mA 50 µA VDD Supply Dynamic Current IDD VDD = +5V, VIL = 0, VIH = +5V, fCLK = 5MHz VPP Supply Quiescent Current IPPQ All switches remain on or off, ICOM_(ON) = 5mA VPP = +40V, VNN = -160V VPP Supply Dynamic Current IPP 50kHz output switching frequency with no load VPP = +100V, VNN = -100V VPP = +160V, VNN = -40V VNN Supply Quiescent Current INNQ VNN Supply Dynamic Current INN 50kHz output switching frequency with no load VPP = +100V, VNN = -100V VPP = +160V, VNN = -40V 4 TA = 0°C 6.5 TA = +25°C 6.5 TA = +70°C 6.5 TA = 0°C 4.0 TA = +25°C 4.0 TA = +70°C 4.0 TA = 0°C 4.0 TA = +25°C 4.0 TA = +70°C 4.0 All switches remain on or off, ICOM_(ON) = 5mA VPP = +40V, VNN = -160V 10 10 50 TA = 0°C 6.5 TA = +25°C 6.5 TA = +70°C 6.5 TA = 0°C 4.0 TA = +25°C 4.0 TA = +70°C 4.0 TA = 0°C 4.0 TA = +25°C 4.0 TA = +70°C 4.0 _______________________________________________________________________________________ mA µA mA Low-Charge Injection, 8-Channel, High-Voltage Analog Switches (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 = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS ANALOG SWITCH Turn-On Time tON VNO_ = VPP - 10V, RL = 10kΩ, VNN = -40V to -160V 5 µs Turn-Off Time tOFF VNO_ = VPP - 10V, RL = 10kΩ, VNN = -40V to -160V 5 µs Output Switching Frequency fSW Duty cycle = 50% 50 kHz Maximum VCOM_, VNO_ Slew Rate dV/dt (Note 3) 20 V/ns LOGIC TIMING (Figure 1) Daisy chaining CLK Frequency fCLK No daisy chaining DIN to CLK Setup Time tDS DIN to CLK Hold Time tDH CLK to LE Setup Time tCS LE Low-Pulse Width tWL CLR High-Pulse Width tWC CLK Rise and Fall Times tR, tF CLK to DOUT Delay tDO VDD ≥ +4.5V 5 VDD ≤ +4.5V 2.5 VDD ≥ +4.5V 10 VDD < +4.5V 4 VDD ≥ +4.5V 15 VDD < +4.5V 40 VDD ≥ +4.5V 35 VDD < +4.5V 60 VDD ≥ +4.5V 150 VDD < +4.5V 300 VDD ≥ +4.5V 150 VDD < +4.5V 300 VDD ≥ +4.5V 150 VDD < +4.5V 300 ns ns ns ns ns VDD ≥ +4.5V (Note 3) 1 VDD < +4.5V (Note 3) 1 VDD = +5V ±10%, CL ≤ 50pF VDD = +3V ±10%, CL ≤ 50pF MHz TA = 0°C 55 150 TA = +25°C 60 150 TA = +70°C 70 150 TA = TMIN to TMAX 70 280 µs ns Note 1: Specifications at 0°C 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. _______________________________________________________________________________________ 5 MAX4800/MAX4801/MAX4802 TIMING CHARACTERISTICS Typical Operating Characteristics (VDD = +5V, VPP = +100V, VNN = -100V, TA = +25°C, unless otherwise noted.) IDD SUPPLY CURRENT vs. CLOCK FREQUENCY 2.0 DIN = 01010101 -90 25 ON-RESISTANCE (Ω) 2.5 30 -85 -80 -75 -60 0 10 0 10 20 30 40 50 FREQUENCY (MHz) TEMPERATURE (°C) ON-RESISTANCE vs. VPP/VNN SUPPLY VOLTAGE tDO vs. TEMPERATURE SUPPLY CURRENT vs. SWITCHING FREQUENCY VDD = +3V 140 TA = +70°C 120 tDO (ns) 25 20 15 100 VDD = +5V 80 60 TA = 0°C TA = +25°C 40 5 20 0 0 +60/ -140 +80/ -120 +100/ +120/ -100 -80 +140/ +160/ -60 -40 ALL SWITCHES OPERATING ALL SWITCHES CONNECTED TO GND 5.0 INN 4.0 IPP 3.0 2.0 1.0 IDD 0 0 10 20 30 40 50 60 0 70 10 20 30 40 50 60 70 80 90 100 SWITCHING FREQUENCY (kHz) TEMPERATURE (°C) SUPPLY CURRENT vs. VPP/VNN SUPPLY VOLTAGE INN 0.35 IPP 0.30 MAX4800 toc08 8 7 LOGIC THRESHOLD (V) SUPPLY CURRENT (mA) 0.40 ONE SWITCH OPERATING ALL SWITCHES CONNECTED TO GND fSW = 50kHz LOGIC THRESHOLD vs. VDD SUPPLY VOLTAGE MAX4800 toc07 0.45 6 RISING 5 FALLING 4 3 2 0.25 1 0.20 0 +40/ -160 +60/ -140 +80/ -120 +100/ +120/ -100 -80 70 MAX4800 toc06 160 SUPPLY CURRENT (mA) 30 6.0 MAX4800 toc05 MAX4800 toc04 180 VPP/VNN SUPPLY VOLTAGE (V) +140/ +160/ -60 -40 2 4 6 8 10 VDD SUPPLY VOLTAGE (V) VPP/VNN SUPPLY VOLTAGE (V) 6 60 CLOCK FREQUENCY (MHz) 35 +40/ -160 ISW = 200mA 10 0 1 10 1 40 10 15 5 -65 0.5 0.1 ISW = 5mA 20 -70 DIN = 00000000 0.01 MAX4800 toc03 -95 3.0 1.0 RS = RL = 50Ω MAX4800 toc02 MAX4800 toc01 -100 OFF-ISOLATION (dB) IDD SUPPLY CURRENT (mA) 3.5 1.5 ON-RESISTANCE vs. TEMPERATURE OFF-ISOLATION vs. FREQUENCY 4.0 ON-RESISTANCE (Ω) MAX4800/MAX4801/MAX4802 Low-Charge Injection, 8-Channel, High-Voltage Analog Switches _______________________________________________________________________________________ 12 14 Low-Charge Injection, 8-Channel, High-Voltage Analog Switches PIN MAX4800 TQFP MAX4800 CSBGA MAX4800 PLCC MAX4801 PLCC NAME 1 E4 26 26 COM5 2, 4, 6, 7, 9, 11, 13, 15, 17, 19, 21, 23, 26, 27, 30, 31, 32, 38, 40, 42, 44, 46, 48 D6 9, 11, 15 11, 14, 15 N.C. 3 E1 27 27 COM4 5 E3 28 28 NO4 8 D1 1 1 COM3 10 D3 2 2 NO3 12 D4 3 3 COM2 14 C3 4 4 NO2 16 C4 5 5 COM1 18 A4 6 6 NO1 FUNCTION Analog Switch 5 – Common Terminal No Connection. Not connected internally. Analog Switch 4 – Common Terminal Analog Switch 4 – Normally Open Terminal Analog Switch 3 – Common Terminal Analog Switch 3 – Normally Open Terminal Analog Switch 2 – Common Terminal Analog Switch 2 – Normally Open Terminal Analog Switch 1 – Common Terminal Analog Switch 1 – Normally Open Terminal 20 C5 7 7 COM0 22 D5 8 8 NO0 Analog Switch 0 – Normally Open Terminal Analog Switch 0 – Common Terminal 24 C6 10 9 VPP Positive High-Voltage Supply. Bypass V PP to GND with a 0.1μF or greater ceramic capacitor. 25 C7 12 10 VNN Negative High-Voltage Supply. Bypass VNN to GND with a 0.1μF or greater ceramic capacitor. 28 D7 13 12 GND Ground 29 D9 14 13 VDD Digital-Supply Voltage. Bypass VDD to GND with a 0.1μF or greater ceramic capacitor. 33 E9 16 16 DIN Serial Data Input 34 E7 17 17 CLK Serial Clock Input 35 E6 18 18 LE 36 F7 19 19 CLR Latch Clear Input 37 F6 20 20 DOUT Serial Data Output 39 E5 21 21 COM7 41 F5 22 22 NO7 43 F4 23 23 COM6 45 H4 24 24 NO6 Analog Switch 6 – Normally Open Terminal 47 F3 25 25 NO5 Analog Switch 5 – Normally Open Terminal Latch Enable Input, Active Low Analog Switch 7 – Common Terminal Analog Switch 7 – Normally Open Terminal Analog Switch 6 – Common Terminal _______________________________________________________________________________________ 7 MAX4800/MAX4801/MAX4802 Pin Descriptions Low-Charge Injection, 8-Channel, High-Voltage Analog Switches MAX4800/MAX4801/MAX4802 Pin Descriptions (continued) PIN 8 MAX4802 TQFP MAX4802 CSBGA MAX4802 PLCC NAME 1 E4 26 COM5 2, 4, 6, 7, 9, 11,13, 15, 17, 19, 21, 23, 26, 30, 31, 32, 38, 40, 42, 44, 46, 48 — 9, 15 N.C. 3 E1 27 COM4 5 E3 28 NO4 8 D1 1 COM3 FUNCTION Analog Switch 5 – Common Terminal Not Connected Internally Analog Switch 4 – Common Terminal Analog Switch 4 – Normally Open Terminal Analog Switch 3 – Common Terminal 10 D3 2 NO3 12 D4 3 COM2 14 C3 4 NO2 16 C4 5 COM1 18 A4 6 NO1 20 C5 7 COM0 22 D5 8 NO0 Analog Switch 0 – Normally Open Terminal 24 C6 10 VPP Positive High-Voltage Supply. Bypass V PP to GND with a 0.1μF or greater ceramic capacitor. 25 C7 12 VNN Negative High-Voltage Supply. Bypass VNN to GND with a 0.1μF or greater ceramic capacitor. 27 D6 11 RGND 28 D7 13 GND Ground 29 D9 14 VDD Digital-Supply Voltage. Bypass VDD to GND with a 0.1μF or greater ceramic capacitor. 33 E9 16 DIN Serial Data Input 34 E7 17 CLK 35 E6 18 LE 36 F7 19 CLR Analog Switch 3 – Normally Open Terminal Analog Switch 2 – Common Terminal Analog Switch 2 – Normally Open Terminal Analog Switch 1 – Common Terminal Analog Switch 1 – Normally Open Terminal Analog Switch 0 – Common Terminal Bleed Resistor Ground Serial Clock Input Latch Enable Input, Active Low Latch Clear Input 37 F6 20 DOUT Serial Data Output 39 E5 21 COM7 Analog Switch 7 – Common Terminal 41 F5 22 NO7 43 F4 23 COM6 45 H4 24 NO6 Analog Switch 6 – Normally Open Terminal 47 F3 25 NO5 Analog Switch 5 – Normally Open Terminal Analog Switch 7 – Normally Open Terminal Analog Switch 6 – Common Terminal _______________________________________________________________________________________ Low-Charge Injection, 8-Channel, High-Voltage Analog Switches 50% DN+1 50% DN MAX4800/MAX4801/MAX4802 DIN DN-1 tWL 50% 50% LE tCS 50% 50% CLK tDH tDS tDO DOUT tON ON 90% SWITCH 10% OFF tOFF CLR 50% 50% tWC 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: VPP/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 35kΩ 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 MAX4800/MAX4801/MAX4802 Low-Charge Injection, 8-Channel, High-Voltage Analog Switches LE CLK DIN D7 D6 D5 D4 D3 D2 D1 MSB DOUT D7 D0 LSB 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 35kΩ bleed resistors to discharge capacitive loads such as piezoelectric transducers. Each analog switch terminal is connected to RGND with a bleed resistor. 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 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. ______________________________________________________________________________________ Low-Charge Injection, 8-Channel, High-Voltage Analog Switches DATA BITS D0 (LSB) D1 D2 D3 D4 CONTROL BITS D5 D6 D7 (MSB) L H L H L H L H L H L H L H X X X X X X X X X X X X X X L H X X FUNCTION LE CLR SW0 L L L L L L L L L L L L L L L L H X L L L L L L L L L L L L L L L L L H OFF ON SW1 SW2 SW3 SW4 SW5 SW6 SW7 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 = 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. 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. 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 0.1µF ceramic capacitor as close to the device as possible. Chip Information PROCESS: BCDMOS ______________________________________________________________________________________ 11 MAX4800/MAX4801/MAX4802 Table 1. Serial Interface Programming MAX4800/MAX4801/MAX4802 Low-Charge Injection, 8-Channel, High-Voltage Analog Switches U10 DIN DIN U11 DIN DOUT MAX4800 CLK CLK LE LE DOUT U1n DIN MAX4800 MAX4800 CLK CLK LE CLR DOUT LE CLR CLR CLR Figure 3. Interfacing Multiple Devices by Daisy-Chaining Functional Diagrams VDD VPP MAX4800 MAX4801 COM0 LEVEL SHIFTER DIN CLK NO0 SHIFT REGISTER LATCH DOUT LEVEL SHIFTER CLR COM7 NO7 LE GND 12 VNN ______________________________________________________________________________________ Low-Charge Injection, 8-Channel, High-Voltage Analog Switches VDD VPP MAX4802 COM0 LEVEL SHIFTER DIN CLK NO0 SHIFT REGISTER LATCH COM7 DOUT LEVEL SHIFTER CLR NO7 LE GND VNN RGND ______________________________________________________________________________________ 13 MAX4800/MAX4801/MAX4802 Functional Diagrams (continued) Low-Charge Injection, 8-Channel, High-Voltage Analog Switches CLR LE CLK DIN N.C. N.C. N.C. VDD TOP VIEW GND N.C. (RGND) N.C. VNN MAX4800/MAX4801/MAX4802 Pin Configurations 36 35 34 33 32 31 30 29 28 27 26 25 DOUT 37 24 VPP N.C. COM7 38 23 39 22 40 21 41 20 N.C. NO0 N.C. COM0 N.C. NO7 N.C. COM6 N.C. NO6 42 MAX4800 MAX4802 43 44 19 N.C. 18 NO1 17 N.C. COM1 45 16 N.C. NO5 46 15 47 14 N.C. NO2 N.C. 48 13 N.C. 5 6 7 8 9 10 11 12 COM2 4 N.C. COM3 N.C. NO3 N.C. 3 COM4 N.C. NO4 N.C. 2 COM5 N.C. 1 TQFP 7mm x 7mm COM3 NO4 COM4 COM5 28 NO3 NO4 1 COM2 COM3 2 NO2 NO3 3 COM4 COM2 4 COM5 NO2 ()MAX4802 ONLY 27 26 4 3 2 1 28 27 26 COM1 5 25 NO5 NO1 6 24 NO6 COM0 7 NO0 8 MAX4800 MAX4802 23 COM6 22 NO7 COM1 5 25 NO5 NO1 6 24 NO6 COM0 7 NO0 8 MAX4801 COM6 22 NO7 COM7 CLR 12 13 14 15 16 17 18 12 PLCC 13 14 15 16 17 18 LE 19 CLK 11 DIN N.C. N.C. CLR VDD N.C. (RGND) 19 N.C. DOUT 11 GND 20 LE 21 10 CLK 9 VNN DIN VPP DOUT N.C. COM7 20 VDD 21 10 GND 9 VPP VNN N.C. PLCC ()MAX4802 ONLY 14 23 ______________________________________________________________________________________ Low-Charge Injection, 8-Channel, High-Voltage Analog Switches TOP VIEW 1 2 3 4 5 6 7 8 9 A4 A MAX4800 MAX4802 NO1 B C D E C3 C4 C5 C6 C7 NO2 COM1 COM0 VPP VNN D5 D6 D7 D1 D3 D4 COM3 NO3 COM2 NO0 N.C. (RGND) GND D9 VDD E1 E3 E4 E5 E6 E7 E9 COM4 NO4 F3 COM5 F4 COM7 F5 LE F6 CLK F7 DIN NO5 COM6 NO7 DOUT CLR F G H H4 NO6 CSBGA ()MAX4802 ONLY Package Information For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE PACKAGE CODE DOCUMENT NO. 28 PLCC Q28-4 21-0049 26 CSBGA X07265-1 21-0158 48 TQFP C48-6 21-0054 ______________________________________________________________________________________ 15 MAX4800/MAX4801/MAX4802 Pin Configurations (continued) MAX4800/MAX4801/MAX4802 Low-Charge Injection, 8-Channel, High-Voltage Analog Switches Revision History REVISION NUMBER REVISION DATE 0 8/06 DESCRIPTION Initial release. PAGES CHANGED — • Updated “Second Source” column and revised two package codes in the Ordering Information/Selector Guide section. 1 3/07 • Updated the pin numbers of the MAX4802 TQFN in the Pin Descriptions column. Replaced the TQFN Pin Configurations. 1, 7, 8, 14, 18, 19, 20, 21 • Added package drawing 21-0158 to the Package Information section. 2 5/09 Deleted TQFN from the Ordering Information/Selector Guide, Pin Descriptions, Pin Configurations, and Package Information sections. 1, 7, 8, 14, 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. 16 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2009 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.