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MAX4800A/MAX4802A
Low-Charge-Injection, 8-Channel, High-Voltage
Analog Switches with 20MHz Serial Interface
General Description
The MAX4800A/MAX4802A provide high-voltage switching on eight channels for ultrasonic imaging and printer
applications. The devices utilize BCDMOS process technology to provide eight high-voltage low-charge-injection
SPST switches, controlled by a 20MHz serial 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 devices 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 +6V. Digital inputs
DIN, CLK, LE, and CLR are +6V tolerant, independent
of the VDD supply voltage. The MAX4802A provides
integrated 35kΩ bleed resistors on each switch terminal
to discharge capacitive loads.
The devices are drop-in replacements for the Supertex
HV2203 and HV2303. They are available in the 48-pin
LQFP, 26-bump CSBGA, and 28-pin PLCC packages. All
devices are specified for the commercial 0°C to +70°C
temperature range.
Applications
●● Ultrasound Imaging
●● Printers
SPI is a trademark of Motorola, Inc.
19-4120; Rev 2; 4/19
Features
●● Fast SPI™ Interface 20MHz
●● Pin-Compatible Replacement for Supertex HV2203
(MAX4800A)
●● Pin-Compatible Replacement for Supertex HV2303
(MAX4802A)
●● Flexible High-Voltage Supplies Up to VPP - VNN =
200V
●● Low-Charge-Injection, Low-Capacitance 22Ω
Switches
●● DC to 50MHz Analog-Signal Frequency Range
●● -77dB Off-Isolation at 5MHz
●● Low 10µA Quiescent Current
●● Integrated Bleed Resistors (MAX4802A Only)
●● Available in Standard PLCC, LQFP, and CSBGA
Packages
MAX4800A/MAX4802A
Low-Charge-Injection, 8-Channel, High-Voltage
Analog Switches with 20MHz Serial Interface
Absolute Maximum Ratings
(All voltages referenced to GND.)
VDD Logic Supply Voltage........................................-0.3V to +7V
VPP - VNN Supply Voltage...................................................220V
VPP Positive Supply Voltage.................... -0.3V to (VNN + 220V)
VNN Negative Supply Voltage..............................+0.3V to -220V
Logic Inputs LE, CLR, CLK, DIN..............................-0.3V to +7V
DOUT........................................................ -0.3V to (VDD + 0.3V)
RGND (MAX4802A)..............................................-4.5V to +0.3V
COM_, NO_............................................................... VNN to VPP
Continuous Power Dissipation (TA = +70°C)
26-Bump CSBGA (derate 11.8mW/°C above +70°C)..... 941mW
28-Pin PLCC (derate 10.5mW/°C above +70°C).........842mW
48-Pin LQFP (derate 22.7mW/°C above +70°C).......1818mW
Operating Temperature Range................................0°C to +70°C
Storage Temperature Range............................. -65°C to +150°C
Junction Temperature.......................................................+150°C
Lead Temperature (excluding CSBGA, soldering, 10s)... +300°C
Soldering Temperature (reflow)
28 PLCC.......................................................................+245°C
All other packages........................................................ +260°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.
Package Information
PACKAGE TYPE: 26 CSBGA
Package Code
X07265+1
Outline Number
21-0158
Land Pattern Number
90-0184
THERMAL RESISTANCE, FOUR-LAYER BOARD
Junction to Ambient (θJA)
85°C/W
Junction to Case (θJC)
23°C/W
PACKAGE TYPE: 28 PLCC
Package Code
Q28+13
Outline Number
21-0049
Land Pattern Number
90-0235
THERMAL RESISTANCE, FOUR-LAYER BOARD
Junction to Ambient (θJA)
44°C/W
Junction to Case (θJC)
10°C/W
PACKAGE TYPE: 48 LQFP
Package Code
C48+6
Outline Number
21-0054
Land Pattern Number
90-0093
THERMAL RESISTANCE, FOUR-LAYER BOARD
Junction to Ambient (θJA)
44°C/W
Junction to Case (θJC)
10°C/W
For the latest package outline information and land patterns (footprints), go to www.maximintegrated.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 thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board.
For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
www.maximintegrated.com
Maxim Integrated │ 2
MAX4800A/MAX4802A
Low-Charge-Injection, 8-Channel, High-Voltage
Analog Switches with 20MHz Serial Interface
Electrical Characteristics
(VDD = +2.7V to +6V, VPP = +40V to (VNN + 200V), VNN = -40V 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
Analog-Signal Range
VCOM_,
VNO_
VNN +
10
(Note 2)
TA
TA
VPP = +40V,
TA
VNN = -160V,
TA
VCOM_ = 0V
ICOM = 200mA TA
TA
TA
ICOM = 5mA
TA
VPP = +100V,
TA
VNN = -100V,
TA
VCOM_ = 0V
ICOM = 200mA TA
TA
TA
ICOM = 5mA
TA
TA
VPP = +160V,
VNN = -40V
TA
ICOM = 200mA TA
TA
VPP = +100V, VNN = -100V,
VCOM_ = 0V, ICOM = 5mA
ICOM = 5mA
Small-Signal Switch
On-Resistance
Small-Signal Switch
On-Resistance
Small-Signal Switch
On-Resistance Matching
RONS
RONS
ΔRONS
Large-Signal Switch
On-Resistance
RONL
VCOM_ = VPP - 10V, ICOM = 1A
Shunt Resistance
(MAX4802A only)
RINT
NO_ or COM_ to RGND, switch off
Switch-Off Leakage
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
0°C
+25°C
+70°C
0°C
+25°C
+70°C
0°C
+25°C
+70°C
0°C
+25°C
+70°C
0°C
+25°C
+70°C
0°C
+25°C
+70°C
26
22
22
18
20
16
5
VPP 10
30
38
48
25
27
32
25
27
30
18
24
27
23
25
30
22
25
27
20
15
30
ICOM_(OFF), VCOM_, VNO_ = VPP - 10V or unconnected;
INO_(OFF) (MAX4800A only)
V
Ω
Ω
%
Ω
35
50
kΩ
0
2
10
µA
Switch-Off DC Offset
RL = 100kΩ (MAX4800A),
no load (MAX4802A)
0
10
mV
Switch-On DC Offset
RL =100kΩ (MAX4800A),
no load (MAX4802A)
0
10
mV
Switch-Output Peak Current
(Note 3)
ICOM_ duty cycle ≤ 0.1%
Switch-Output Isolation Diode
Current
300ns pulse width, 2% duty cycle (Note 3)
www.maximintegrated.com
TA = 0°C
TA = +25°C
TA = +70°C
3
2
2
300
3
A
mA
Maxim Integrated │ 3
MAX4800A/MAX4802A
Low-Charge-Injection, 8-Channel, High-Voltage
Analog Switches with 20MHz Serial Interface
Electrical Characteristics (continued)
(VDD = +2.7V to +6V, VPP = +40V to (VNN + 200V), VNN = -40V 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
-30
-58
-60
-33
-77
-80
4
11
18
pF
20
-150
36
56
+150
pF
mV
SWITCH DYNAMIC CHARACTERISITICS
Off-Isolation (Note 3)
VISO
Crosstalk
COM_, NO_
Off-Capacitance
COM_ On-Capacitance
Output Voltage Spike
VCT
Charge Injection
(MAX4802A only)
LOGIC LEVELS
Logic-Input Low Voltage
Logic-Input High Voltage
Logic Input Capacitance
Logic Input Leakage
DOUT Low Voltage
DOUT High Voltage
POWER SUPPLIES
VDD Supply Voltage
f = 5MHz, RL = 1kΩ, CL = 15pF
f = 5MHz, RL = 50Ω
f = 5MHz, RL = 50Ω (Note 3)
CCOM_(OFF),
VCOM_ = 0V, VNO_ = 0V, f = 1MHz (Note 3)
CNO_ (OFF)
CCOM_ (ON) VCOM_ = 0V, f = 1MHz (Note 3)
VSPK
RL = 50Ω (Note 3)
VPP = +40V, VNN = -160V, VCOM_ = 0V
Q
VPP = +100V, VNN = -100V, VCOM_ = 0V
VPP = +160V, VNN = -40V, VCOM_ = 0V
VIL
VIH
CIN
IIN
VOL
VOH
(Note 3)
ISINK = 1mA
ISOURCE = 0.75mA
VDD - 0.5
2.7
VPP
40
VNN
IDDQ
-160
IDD
VDD = +5V, VIL = 0V, VIH = +5V,
fCLK = 5MHz
VPP Supply Quiescent Current
IPPQ
All switches remain on or off,
ICOM_(ON) = 5mA
www.maximintegrated.com
6.0
VNN + 200
VIL = 0V, VIH = VPSD, fCLK = 0Hz
VDD Supply Dynamic Current
INNQ
10
+1
0.4
-1
VNN Supply Voltage
VDD Supply Quiescent Current
VNN Supply Quiescent Current
pC
0.75
VDD - 0.75
VDD
IPP
dB
820
600
350
VPP Supply Voltage
VPP Supply Dynamic Current
dB
50kHz
output
switching
frequency
with no load
TA
TA
TA
TA
VPP = +100V,
TA
VNN = -100V
TA
TA
VPP = +160V,
TA
VNN = -40V
TA
VPP = +40V,
VNN = -160V
All switches remain on or off,
ICOM_(ON) = 5mA
10
=
=
=
=
=
=
=
=
=
0°C
+25°C
+70°C
0°C
+25°C
+70°C
0°C
+25°C
+70°C
10
V
V
pF
μA
V
V
V
V
-15
3
V
μA
2
mA
50
μA
6.5
6.5
6.5
4.0
4.0
4.0
4.0
4.0
4.0
mA
50
μA
Maxim Integrated │ 4
MAX4800A/MAX4802A
Low-Charge-Injection, 8-Channel, High-Voltage
Analog Switches with 20MHz Serial Interface
Electrical Characteristics (continued)
(VDD = +2.7V to +6V, VPP = +40V to (VNN + 200V), VNN = -40V to -160V, TA = TMIN to TMAX, unless otherwise noted. Typical values
are at TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
TA
TA
TA
TA
VPP = +100V,
TA
VNN = -100V
TA
TA
VPP = +160V,
TA
VNN = -40V
TA
VPP = +40V,
VNN = -160V
MIN
=
=
=
=
=
=
=
=
=
0°C
+25°C
+70°C
0°C
+25°C
+70°C
0°C
+25°C
+70°C
TYP
MAX
UNITS
6.5
6.5
6.5
4.0
4.0
4.0
4.0
4.0
4.0
mA
INN
50kHz
output
switching
frequency
with no load
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
VNN Supply Dynamic Current
ANALOG SWITCH
Maximum VCOM_,
VNO_ Slew Rate
dV/dt
(Note 3)
CLK Frequency
fCLK
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
(Note 3)
tR, tF
20
V/ns
LOGIC TIMING (Figure 1)
CLK to DOUT Delay
tDO
VDD = +5V ±10%
20
VDD = +3V ±10%
10
VDD = +5V ±10%
10
VDD = +3V ±10%
16
VDD = +5V ±10%
3
VDD = +3V ±10%
3
VDD = +5V ±10%
36
VDD = +3V ±10%
65
VDD = +5V ±10%
14
VDD = +3V ±10%
22
VDD = +5V ±10%
20
VDD = +3V ±10%
40
MHz
ns
ns
ns
ns
ns
VDD = +5V ±10%
50
VDD = +3V ±10%
50
VDD = +5V ±10%, CL ≤ 20pF
6
42
VDD = +3V ±10%, CL ≤ 20pF
12
80
ns
ns
Note 1: Specifications at 0°C are guaranteed by correlation and design.
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 design and characterization; not production tested.
www.maximintegrated.com
Maxim Integrated │ 5
MAX4800A/MAX4802A
Low-Charge-Injection, 8-Channel, High-Voltage
Analog Switches with 20MHz Serial Interface
Typical Operating Characteristics
(VDD = +5V, VPP = +100V, VNN = -100V, TA = +25°C, unless otherwise noted.)
0.4
DIN = 01010101
0.3
-80
-75
-70
0.2
0
0.01
0.1
1
-60
10
1
30
TA = +70°C
20
TA = 0°C
10
60
40
20
0
0
+60/
-140
+80/
-120
VDD = +5V
80
5
+40/
-160
VDD = +3V
100
TA = +25°C
+100/ +120/ +140/ +160/
-100
-80
-60
-40
0
INN
0.35
IPP
0.30
0.25
0.20
10
20
30
40
50
60
70
TEMPERATURE (°C)
MAX4800A/2A toc07
SUPPLY CURRENT (mA)
0.40
MAX4800A/2A toc03
50
60
6.0
ALL SWITCHES OPERATING
ALL SWITCHES CONNECTED TO GND
5.0
INN
4.0
70
IPP
3.0
2.0
IDD
0
0
10 20 30 40 50 60 70 80 90 100
SWITCHING FREQUENCY (kHz)
SUPPLY CURRENT
vs. VPP/VNN SUPPLY VOLTAGE
ONE SWITCH OPERATING
ALL SWITCHES CONNECTED TO GND
fSW = 50kHz
40
1.0
VPP/VNN SUPPLY VOLTAGE (V)
0.45
30
SUPPLY CURRENT
vs. SWITCHING FREQUENCY
140
15
20
CLK TO DOUT DELAY
vs. TEMPERATURE
120
25
10
TEMPERATURE (°C)
160
tDO (ns)
ON-RESISTANCE (Ω)
35
0
FREQUENCY (MHz)
180
MAX4800A/2A toc04
40
ISW = 200mA
10
0
10
CLOCK FREQUENCY (MHz)
ON-RESISTANCE
vs. VPP/VNN SUPPLY VOLTAGE
15
5
-65
DIN = 00000000
MAX4800A/2A toc05
0.1
ISW = 5mA
20
MAX4800A/2A toc06
0.5
-85
LOGIC THRESHOLD
vs. VDD SUPPLY VOLTAGE
3.5
RISING
3.0
2.5
MAX4800A/2A toc08
0.6
25
ON-RESISTANCE (Ω)
0.7
-90
30
SUPPLY CURRENT (mA)
0.8
RS = RL = 50Ω
-95
LOGIC THRESHOLD (V)
IDD SUPPLY CURRENT (mA)
0.9
-100
OFF-ISOLATION (dB)
MAX4800A/2A toc01
1.0
ON-RESISTANCE
vs. TEMPERATURE
OFF-ISOLATION vs. FREQUENCY
MAX4800A/2A toc02
IDD SUPPLY CURRENT
vs. CLOCK FREQUENCY
FALLING
2.0
1.5
1.0
0.5
+40/
-160
+60/
-140
+80/
-120
+100/ +120/ +140/ +160/
-100
-80
-60
-40
VPP/VNN SUPPLY VOLTAGE (V)
www.maximintegrated.com
0
2
3
4
5
VDD SUPPLY VOLTAGE (V)
6
Maxim Integrated │ 6
MAX4800A/MAX4802A
Low-Charge-Injection, 8-Channel, High-Voltage
Analog Switches with 20MHz Serial Interface
18
NO1
44
17
N.C.
45
16
N.C.
NO5
46
15
47
14
COM1
N.C.
NO2
N.C.
48
13
N.C.
43
COM0
7
NO0
8
5
6
7
8
25
NO5
24
NO6
23
COM6
22
NO7
NO4
COM4
COM5
N.C.
9
21
COM7
VPP
10
20
DOUT
N.C. (RGND)
11
19
CLR
12 13
14
15
16
17
9 10 11 12
18
PLCC
COM2
4
N.C.
COM3
N.C.
NO3
N.C.
3
COM5
N.C.
COM4
N.C.
NO4
N.C.
2
26
MAX4800A
MAX4802A
+
1
27
LE
42
28
CLK
MAX4800A
MAX4802A
41
6
1
+
DIN
N.C.
21
5
NO1
NO3
19
40
N.C.
NO7
N.C.
COM6
N.C.
NO6
COM1
2
COM3
20
N.C.
NO0
N.C.
COM0
3
VDD
23
22
4
N.C.
38
39
N.C.
COM7
COM2
VPP
37
VNN
24
DOUT
NO2
TOP VIEW
36 35 34 33 32 31 30 29 28 27 26 25
GND
N.C.
N.C.
VDD
CLK
DIN
N.C.
CLR
LE
TOP VIEW
GND
N.C. (RGND)
N.C.
VNN
Pin/Bump Configurations
() MAX4802A ONLY
LQFP
(7mm x 7mm)
() MAX4802A ONLY
TOP VIEW
1
2
3
4
5
6
A4
A
B
D
E
8
9
MAX4800A
MAX4802A
NO1
C
7
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
() MAX4802A ONLY
www.maximintegrated.com
Maxim Integrated │ 7
MAX4800A/MAX4802A
Low-Charge-Injection, 8-Channel, High-Voltage
Analog Switches with 20MHz Serial Interface
Pin/Bump Descriptions
PIN/BUMP
MAX4800A
LQFP
MAX4800A
CSBGA
MAX4800A
PLCC
NAME
FUNCTION
1
E4
26
COM5
Analog Switch 5—Common Terminal
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
N.C.
3
E1
27
COM4
5
E3
28
NO4
8
D1
1
COM3
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 VPP 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.
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
Serial-Clock Input
35
E6
18
LE
36
F7
19
CLR
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
www.maximintegrated.com
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
Analog Switch 0—Common Terminal
Latch-Enable Input, Active Low
Latch Clear Input
Analog Switch 7—Normally Open Terminal
Analog Switch 6—Common Terminal
Maxim Integrated │ 8
MAX4800A/MAX4802A
Low-Charge-Injection, 8-Channel, High-Voltage
Analog Switches with 20MHz Serial Interface
Pin/Bump Descriptions (continued)
PIN/BUMP
MAX4802A
LQFP
MAX4802A
CSBGA
MAX4802A
PLCC
NAME
FUNCTION
1
E4
26
COM5
Analog Switch 5—Common Terminal
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
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 VPP 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
Serial-Clock Input
35
E6
18
LE
36
F7
19
CLR
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
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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
Analog Switch 0—Common Terminal
Bleed Resistor Ground
Latch-Enable Input, Active Low
Latch Clear Input
Analog Switch 7—Normally Open Terminal
Analog Switch 6—Common Terminal
Maxim Integrated │ 9
MAX4800A/MAX4802A
DIN
DN+1
Low-Charge-Injection, 8-Channel, High-Voltage
Analog Switches with 20MHz Serial Interface
50%
50%
DN
DN-1
tWL
50%
50%
LE
tCS
50%
50%
CLK
tDS
tDH
tDO
DOUT
tON
ON
90%
SWITCH
10%
OFF
CLR
tOFF
50%
50%
tWC
*FOR SLOWER CLK RATES REFER TO THE MAX4800/MAX4801/MAX4802 DATA SHEET.
Figure 1. Serial Interface Timing*
Detailed Description
The MAX4800A/MAX4802A 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 20MHz
serial 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 devices 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 +6V. Digital inputs
DIN, CLK, LE, and CLR are +6V tolerant, independent
of the VDD supply voltage. The MAX4802A provides
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integrated 35kΩ bleed resistors on each switch terminal
to discharge capacitive loads.
The devices are drop-in replacements for the Supertex
HV2203 and HV2303, respectively.
Analog Switch
The devices allow a peak-to-peak analog-signal range
from VNN + 10V to VPP - 10V. Analog switch inputs must
be unconnected, or satisfy VNN ≤ (VCOM_, VNO_) ≤ VPP
during power-up and power-down.
High-Voltage Supplies
The devices allow a wide range of high-voltage
supplies. The devices operate with V NN from
-160V to -15V and VPP from +40V to (VNN + 200V).
When VNN is connected to GND (single-supply
applications), the devices operate with VPP up to +200V.
Maxim Integrated │ 10
MAX4800A/MAX4802A
Low-Charge-Injection, 8-Channel, High-Voltage
Analog Switches with 20MHz Serial Interface
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
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 (MAX4802A)
The MAX4802A 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 devices 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).
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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 logic-high 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 devices 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 devices feature a power-on reset circuit to ensure all
switches are open at power-on. The internal 8-bit serial
shift register and latch are set to zero on power-up.
Maxim Integrated │ 11
MAX4800A/MAX4802A
Low-Charge-Injection, 8-Channel, High-Voltage
Analog Switches with 20MHz Serial Interface
Table 1. Serial Interface Programming
CONTROL
BITS
DATA BITS
D0
(LSB)
D1
D2
D3
D4
D5
D6
D7
(MSB)
FUNCTION
LE
CLR
SW0
L
L
L
Off
H
L
L
On
L
L
Off
On
L
H
SW1
SW2
SW3
SW4
SW5
SW6
SW7
L
L
L
L
L
Off
H
L
L
On
L
L
L
Off
H
L
L
On
L
L
L
Off
H
L
L
On
L
L
L
Off
H
L
L
On
L
L
L
Off
H
L
L
On
L
L
L
Off
H
L
L
On
X
X
X
X
X
X
X
X
H
L
X
X
X
X
X
X
X
X
X
H
Hold Previous State
Off
Off
Off
Off
Off
Off
Off
Off
X = Don’t care.
Applications Information
Logic Levels
The devices’ digital interface inputs CLK, DIN, LE, and
CLR are tolerant of up to +6V, 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 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 MAX4800A/MAX4802A data
chain.
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Supply Sequencing and Bypassing
The devices 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
Maxim Integrated │ 12
MAX4800A/MAX4802A
Low-Charge-Injection, 8-Channel, High-Voltage
Analog Switches with 20MHz Serial Interface
U10
DIN
DIN
U11
DIN
DOUT
MAX4800A
CLK
CLK
LE
LE
DOUT
MAX4800A
LE
DIN
DOUT
MAX4800A
CLK
CLK
CLR
U1n
LE
CLR
CLR
CLR
Figure 3. Interfacing Multiple Devices by Daisy-Chaining
Functional Diagrams
VDD
VPP
MAX4800A
DIN
CLK
COM0
LEVEL
SHIFTER
SHIFT
REGISTER
DOUT
NO0
LATCH
LEVEL
SHIFTER
CLR
NO7
LE
GND
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COM7
VNN
Maxim Integrated │ 13
MAX4800A/MAX4802A
Low-Charge-Injection, 8-Channel, High-Voltage
Analog Switches with 20MHz Serial Interface
Functional Diagrams (continued)
VDD
VPP
MAX4802A
DIN
CLK
COM0
LEVEL
SHIFTER
SHIFT
REGISTER
NO0
LATCH
COM7
DOUT
LEVEL
SHIFTER
CLR
NO7
LE
GND
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VNN
RGND
Maxim Integrated │ 14
MAX4800A/MAX4802A
Low-Charge-Injection, 8-Channel, High-Voltage
Analog Switches with 20MHz Serial Interface
Ordering Information/
Selector Guide
PART
BLEED
RESISTORS
SECOND
SOURCE
PINPACKAGE
MAX4800ACXZ+*
No
—
26 CSBGA
MAX4800ACQI+
No
HV2203PJ-G 28 PLCC
MAX4800ACCM+*
No
HV2203FG-G 48 LQFP
MAX4802ACXZ+*
Yes
MAX4802ACQI+
Yes
HV2303PJ-G 28 PLCC
MAX4802ACCM+*
Yes
HV2303FG-G 48 LQFP
—
26 CSBGA
Note: All devices are specified over the commercial 0°C to
+70°C temperature range.
*Future product—contact factory for availability.
+Denotes a lead(Pb)-free/RoHS-compliant package.
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Maxim Integrated │ 15
MAX4800A/MAX4802A
Low-Charge-Injection, 8-Channel, High-Voltage
Analog Switches with 20MHz Serial Interface
Revision History
REVISION
NUMBER
REVISION
DATE
PAGES
CHANGED
0
5/08
Initial release
1
2/11
Changed the DC analog-signal frequency range to 50MHz in the Features
section; changed the TQFP package to LQFP in the General Description,
Ordering Information, Features, Pin/Bump Configurations, Pin/Bump
Descriptions, and Package Information
2
4/19
Updated the Electrical Characteristics section
DESCRIPTION
—
1, 8, 14
5
For pricing, delivery, and ordering information, please visit Maxim Integrated’s online storefront at https://www.maximintegrated.com/en/storefront/storefront.html.
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits)
shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
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