MAX14800_V01 [MAXIM]
Low-Charge Injection, 16-Channel, High-Voltage Analog Switches;
| 型号： | MAX14800_V01 |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Low-Charge Injection, 16-Channel, High-Voltage Analog Switches |
| 文件： | 总20页 (文件大小：857K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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MAX14802/MAX14803/
MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
General Description
Features
The MAX14802/MAX14803/MAX14803A provide high-
voltage switching on 16 channels for ultrasonic imaging
and printer applications. The devices utilize HVCMOS
process technology to provide 16 high-voltage low-
charge-injection SPST switches, controlled by a digital
interface. Data is clocked into an internal 16-bit shift reg-
ister 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.
● Integrated Overvoltage Protection
● 20MHz Serial Interface (5V)
● HVCMOS Technology for High Performance
● Individually Programmable High-Voltage Analog
Switches
● Very Low 5μA (typ) Quiescent Current
● DC-to-20MHz Low-Voltage Analog Signal
Frequency Range
The MAX14802/MAX14803/MAX14803A operate with a
wide range of high-voltage supplies including V /V
= +100V/-100V, +200V/0V, or +40V/-160V. The digital
interface operates from a separate +2.7V to +5.5V V
● 2.7V to 5.5V Logic Supply Voltage
PP NN
● Low-Charge Injection, Low-Capacitance R Switches
L
DD
● -77dB (typ) Off-Isolation at 5MHz (R = 50Ω)
L
supply. Digital inputs DIN, CLK, LE, and CLR operate on
● Daisy-Chainable Serial Interface
the V supply voltage.
DD
● Flexible High-Voltage Supplies (V
- V
= 250V)
PP
NN
The MAX14803/MAX14803A provide integrated 35kΩ
bleed resistors on each switch terminal to discharge
capacitive loads. The MAX14802/MAX14803/MAX14803A
provide integrated clamping diodes for overvoltage pro-
tection against positive overshoot.
The MAX14802 is available in a 48-pin LQFP package
and is specified for commercial 0°C to +70°C and extend-
ed -40°C to +85°C temperature ranges.
The MAX14803 is available in a 48-pin LQFP package
and is specified for the commercial 0°C to +70°C tem-
perature range.
Ordering Information/Selector Guide appear at end of data
sheet.
The MAX14803A is available in the 110-bump wafer level
package (WLP) and is specified at the -40°C to +85°C
temperature range.
Applications
● Ultrasound Imaging
● Printers
19-4484; Rev 5; 2/21
MAX14802/MAX14803/
MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
Absolute Maximum Ratings
(All voltages referenced to GND.)
Peak Analog Signal Current Per Channel...............................3A
V
V
Logic-Supply Voltage.......................................-0.3V to +7V
Continuous Power Dissipation (T = +70°C)
DD
A
- V
Supply Voltage
48-Pin LQFP (derate 22.7mW/°C above +70°C) ......1818mW
110-Bump WLP (derate 37mW°C above +70°C) ......2960mW
Operating Temperature Range (Commercial)........0°C to +70°C
Operating Temperature Range (Extended)........ -40°C to +85°C
Storage Temperature Range............................ -65°C to +150°C
Junction Temperature......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow).......................................+260°C
PP
NN
(MAX14802CCM+, MAX14803CCM+)............................260V
(MAX14802ECM+, MAX14803AEWZ+)..........................230V
Positive-Supply Voltage...............................-0.3V to +220V
Negative-Supply Voltage..............................-0.3V to -220V
V
V
PP
NN
Logic Inputs (LE, CLR, CLK, DIN, DOUT)..............-0.3V to +7V
COM_, NO_............................. (-0.3V + V ) to the minimum of
NN
[(V
+ 220V) or (V + 0.3V)]
NN
PP
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: 48 LQFP
Package Code
C48+6
Outline Number
21-0054
90-0093
Land Pattern Number
THERMAL RESISTANCE, FOUR-LAYER BOARD
Junction to Ambient (θ
)
44°C/W
10°C/W
JA
Junction to Case (θ
)
JC
PACKAGE TYPE: 110 WLP
Package Code
W1105B5+1
Outline Number
21-0494
Land Pattern Number
Refer to Application Note 1891
THERMAL RESISTANCE, FOUR-LAYER BOARD
Junction to Ambient (θ
)
27°C/W
1°C/W
JA
Junction to Case (θ
)
JC
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.
Maxim Integrated
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MAX14802/MAX14803/
MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
Electrical Characteristics
(V
= +2.7V to +5.5V, V = +40V to V
+ 250V, V
= -40V to -160V, T = T
A
to T
, unless otherwise noted. Typical values
MAX
DD
PP
NN
NN
MIN
are at T = +25°C.) (Note 1)
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
POWER SUPPLIES
V
Supply Voltage
Supply Voltage
V
+2.7
+40
+5.5
V
DD
DD
V
200
+
NN
MAX14802ECM+, MAX14803AEWZ+
MAX14802CCM+, MAX14803CCM+
+100
V
V
V
PP
PP
V
250
+
NN
+40
+100
-100
V
V
Supply Voltage
V
-160
0
5
V
NN
DD
NN
Supply Quiescent
I
µA
DDQ
Current
V
Supply Dynamic
DD
I
V
= +5V, V = +5V, f = 5MHz
CLK
0.5
10
mA
µA
DD
DD
LE
Current
V
Supply Quiescent
PP
I
All switches remain on or off, I
= 5mA
COM_
0
PPQ
Current
V
V
V
= +40V, V
= -160V, f = 50kHz
COM_
4
6
8
PP
PP
PP
NN
V
Supply Dynamic
PP
Current (All Channel
Switching Simultaneously)
I
= +100V, V
= -100V, f = 50kHz
COM_
3.4
0
mA
µA
PP
NN
NN
= +160V, V
= -40V, f
= 50kHz
COM_
V
Supply Quiescent
NN
I
All switches remain on or off, I
= 5mA
COM_
10
NNQ
Current
V
V
V
= +40V, V
= -160V, f = 50kHz
COM_
5
4
3
PP
PP
PP
NN
V
Supply Dynamic
NN
Current (All Channel
Switching Simultaneously)
I
= +100V, V
= -100V, f = 50kHz
COM_
2.3
mA
NN
NN
NN
= +160V, V
= -40V, f
= 50kHz
COM_
ANALOG SWITCH
min of (V
+ 200V) or
NN
COM_, NO_ Analog
Signal Range
V
V
,
COM_
(Note 2)
V
V
NN
NO_
ONS
(V - 10V)
PP
I
I
I
I
I
I
= 5mA
= 200mA
= 5mA
26
22
22
18
20
16
48
32
30
27
30
27
COM_
COM_
COM_
COM_
COM_
COM_
COM_
V
V
= +40V, V
= -160V,
PP
NN
= 0V
COM_
Small-Signal Switch
On-Resistance
V
V
= +100V, V
= -100V,
= -40V,
PP
NN
R
Ω
= 0V
COM_
= 200mA
= 5mA
V
V
= +160V, V
PP
NN
= 0V
COM_
= 200mA
= 0V,
Small-Signal Switch
On-Resistance Matching
V
= +100V, V
= 5mA
= -100V, V
PP
NN
∆R
5
%
Ω
ONS
I
COM_
Large-Signal Switch
On-Resistance
R
V
= V - 10V, I = 1A
COM_
15
40
ONL
COM_
PP
NO_ or COM_ to GND (MAX14803/MAX14803A),
switch off
Shunt Resistance
R
30
50
KΩ
INT
Maxim Integrated
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MAX14802/MAX14803/
MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
Electrical Characteristics (continued)
(V
= +2.7V to +5.5V, V = +40V to V
+ 250V, V
= -40V to -160V, T = T
to T
, unless otherwise noted. Typical values
MAX
DD
PP
NN
NN
A
MIN
are at T = +25°C.) (Note 1)
A
PARAMETER
Switch-Off Leakage
Switch-Off DC Offset
SYMBOL
CONDITIONS
MIN
TYP
MAX
2
UNITS
µA
I
COM_(OFF),
V
, V
= +100V or unconnected
0
COM_ NO_
I
NO_(OFF)
R = 100kΩ
-30
+30
mV
A
L
Switch-Output Peak
Current
100ns pulse width, 0.1% duty cycle (Note 3)
300ns pulse width, 2% duty cycle (Note 3)
3
Switch-Output COM_
Isolation Diode Current
500
mA
SWITCH DYNAMIC CHARACTERISTICS
V
V
= +100V, R = 10kΩ,
L
NO_
NN
Turn-On Time
t
2
2
3.5
3.5
50
µs
µs
ON
= -100V
V
V
= +100V, R = 10kΩ,
L
= -100V
NO_
NN
Turn-Off Time
t
OFF
Output Switching
Frequency
f
Duty cycle = 50%
(Note 3)
kHz
V/ns
SW
Maximum V
Slew Rate
, V
COM_ NO_
dV/dt
20
f = 5MHz, R = 1kΩ, C = 15pF
-50
-77
-80
L
L
Off-Isolation
V
dB
dB
pF
ISO
f = 5MHz, R = 50Ω
L
Crosstalk
V
f = 5MHz, R = 50Ω
L
CT
C
COM_(OFF),
COM_, NO_ Off-
Capacitance
V
= 0V, V
= 0V, f = 1MHz (Note 3)
4
11
36
18
COM_
NO_
C
NO_(OFF)
COM_ On-Capacitance
Output-Voltage Spike
C
V
= 0V, f = 1MHz (Note 3)
20
56
pF
COM_(ON)
COM_
V
f
R = 50Ω (Note 3)
-150
+150
mV
SPK
L
Small-Signal Analog
Bandwidth
V
= +100V, V
= -100V, C = 200pF
20
MHz
BW
PP
NN
L
V
V
V
= +40V, V
= -160V, V = 0V
COM_
820
600
350
PP
PP
PP
NN
Charge Injection
Q
= +100V, V
= -100V, V
= 0V
pC
NN
NN
COM_
= +160V, V
= -40V, V
= 0V
COM_
LOGIC LEVELS
Logic-Input Low Voltage
V
0.75
0.4
V
V
V
V
IL
V
0.75
-
DD
Logic-Input High Voltage
Logic-Output Low Voltage
V
IH
V
I
I
= 1mA
SINK
OL
Logic-Output High
Voltage
V
DD
0.5
-
V
= 0.75mA
OH
SOURCE
Logic-Input Capacitance
Logic-Input Leakage
C
(Note 3)
10
+1
pF
µA
IN
I
-1
IN
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MAX14802/MAX14803/
MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
Timing Characteristics
(V
= +2.7V to +5.5V, V = +40V to V
+ 200V, V
= -40V to -160V, T = T
A
to T
, unless otherwise noted. Typical values
MAX
DD
PP
NN
NN
MIN
are at T = +25°C.) (Note 1)
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
LOGIC TIMING (Figure 1)
V
= +5V ±10%
= +3V ±10%
= +5V ±10%
= +3V ±10%
= +5V ±10%
= +3V ±10%
= +5V ±10%
= +3V ±10%
= +5V ±10%
= +3V ±10%
= +5V ±10%
= +3V ±10%
= +5V ±10%
= +3V ±10%
= +5V ±10%
= +3V ±10%
20
10
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
CLK Frequency
f
MHz
ns
CLK
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
10
16
3
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
CLK to DOUT Delay
t
DS
DH
t
ns
3
36
65
14
22
20
40
t
t
ns
CS
ns
WL
t
ns
WC
50
50
42
80
t , t
ns
R
F
6
t
ns
DO
12
Note 1: All devices are 100% tested at T = +70°C. Limits over the operating temperature range are guaranteed by design and
A
characterization.
Note 2: The analog signal input V
and V
NO_
must satisfy V
NN
≤ (V
, V
COM_ NO_
) ≤ V , or remain unconnected during power-up
PP
COM_
and power-down.
Note 3: Guaranteed by characterization; not production tested.
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MAX14802/MAX14803/
MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
Test Circuits
V
PP
- 10V
R
L
100kΩ
I
SOL
NO_
NO_
NO_
V
OUT
V
+100V
-100V
OUT
COM_
COM_
COM_
R
L
100kΩ
MAX14802
MAX14803
MAX14803A
MAX14802
MAX14803
MAX14803A
MAX14802
MAX14803
MAX14803A
+100V
+100V
V
V
V
V
DD
+5V
V
V
V
V
DD
+5V
V
V
V
V
DD
+5V
PP
PP
PP
PP
PP
PP
V
NN
GND
NN
V
GND
V
NN
GND
NN
NN
NN
-100V
-100V
DC OFFSET ON/OFF
t
/t
TEST CIRCUIT
SWITCH OFF LEAKAGE
ON OFF
V
OUT
= 10V
V = 10V
P-P
OUT
P-P
AT 5MHz
AT 5MHz
V
PP
COM_
NO_
NO_
NO_
V
OUT
50Ω
V
OUT
I
ID
COM_
COM_
COM_
V
V
NN
NO_
R
L
50Ω
MAX14802
MAX14803
MAX14803A
MAX14802
MAX14803
MAX14803A
MAX14802
MAX14803
MAX14803A
NN
V
PP
V
V
V
+5V
V
V
V
V
V
DD
+5V
PP
DD
PP
PP
V
V
PP
V
V
V
+5V
PP
DD
V
NN
GND
GND
NN
NN
NN
GND
NN
NN
V
V
V
OUT
V
IN
OUT
ISOLATION DIODE CURRENT
V
ISO
= 20LOG
V
CT
= 20LOG
IN
OFF ISOLATION
CROSSTALK
+V
SPK
V
OUT
V
OUT
NO_
NO_
V
OUT
-V
SPK
100pF
50Ω
COM_
COM_
R
L
MAX14802
MAX14803
MAX14803A
MAX14802
MAX14803
MAX14803A
1kΩ
V
COM_
V
V
V
V
V
+5V
V
V
V
V
DD
+5V
PP
PP
DD
PP
PP
GND
V
NN
GND
NN
NN
NN
Q = 1000pF x V
OUT
OUTPUT-VOLTAGE SPIKE
CHARGE INJECTION
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MAX14802/MAX14803/
MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
Typical Operating Characteristics
(V
= +3V, V = +100V, V = -100V, T = +25°C, unless otherwise noted.)
NN A
DD
PP
ON-RESISTANCE vs.
ON-RESISTANCE vs.
TURN-ON/TURN-OFF TIME vs.
ANALOG SIGNAL VOLTAGE
ANALOG SIGNAL VOLTAGE
ANALOG SIGNAL VOLTAGE
180
160
140
120
100
80
160
140
120
100
80
5
4
3
2
1
0
V
= +100V, V = -100V
NN
PP
V
= +160V, V = -40V
NN
PP
V
PP
= +100V, V = -100V
NN
t
OFF
V
PP
= +40V, V = -160V
NN
60
T
A
= +25°C
60
T
= +70°C
A
40
40
20
20
T
A
= 0°C
t
ON
0
0
-150 -100
-50
0
50
100
150
-100
-50
0
50
100
-90
-60
-30
0
30
60
90
V
COM_
(V)
V
COM_
(V)
V
NO_
(V)
LOGIC SUPPLY CURRENT
vs. SUPPLY VOLTAGE
OFF-ISOLATION vs. FREQUENCY
LEAKAGE CURRENT vs. TEMPERATURE
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
-20
-40
-60
-80
5.0
4.5
4.0
3.5
3.0
2.5
2.0
I
(V
= +90V)
COM_(ON) COM_
I
(V
= -90V)
COM_(ON) COM_
I
(V
= 0V)
COM_(ON) COM_
T
A
= +70°C
I
(V
= -90V)
COM_(OFF) COM_
T
= +25°C
A
I
(V
= 0V)
T
A
= +70°C
0.01
COM_(OFF) COM_
T
A
= +25°C
I
(V
= +90V)
COM_(OFF) COM_
T = 0°C
A
T
1
= 0°C
A
2.7
3.1 3.5 3.9
4.3 4.7 5.1 5.5
0.001
0.1
10
100
0
10
20
30
40
50
60
70
V
DD
SUPPLY VOLTAGE (V)
FREQUENCY (MHz)
TEMPERATURE (°C)
HIGH-VOLTAGE SUPPLY CURRENT
vs. TEMPERATURE
HIGH-VOLTAGE SUPPLY CURRENT
vs. SWITCHING FREQUENCY
LOGIC SUPPLY CURRENT
vs. SERIAL-CLOCK FREQUENCY
0.20
0.15
0.10
0.05
0
250
200
150
100
50
8
6
4
2
0
V
PP
V
NN
= +100V
= -100V
ALL SWITCHES SWITCHING
T
= +70°C
A
T
A
= +25°C
T
= +25°C
A
I
PP
T
A
= 0°C
I
PP
I
NN
I
NN
0
0
10
20
30
40
50
60
70
0
2
4
6
8
10
0
10
20
30
40
50
TEMPERATURE (°C)
CLK SERIAL-CLOCK FREQUENCY (MHz)
SWITCHING FREQUENCY (kHz)
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MAX14802/MAX14803/
MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
Pin Configurations
TOP VIEW
35 34 33 32 31 30 29 28 27
36
26
25
N.C.
DOUT
CLR
LE
COM10
NO10
24
23
22
21
20
19
18
17
16
15
14
13
37
38
39
COM9
NO9 40
CLK
DIN
COM8 41
NO8
NO7
42
43
MAX14802
MAX14803
V
DD
GND
N.C.
COM7 44
NO6 45
V
PP
COM6
NO5
46
47
48
N.C.
V
COM5
NN
ꢈ
2
3
4
5
6
7
8
9
10
1
11
12
Lꢀꢁꢂ
ꢃꢄꢅꢅ ꢆ ꢄꢅꢅꢇ
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MAX14802/MAX14803/
MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
Pin Configurations (continued)
TOP VIEW
(BUMPS ON BOTTOM)
MAX14803A
1
2
3
4
5
6
7
8
9
10
11
+
A
B
C
D
E
F
0.31 mm
N.C.
N.C.
N.C.
NO1
N.C.
COM3
N.C.
NO4
N.C.
N.C.
V
N.C.
N.C.
V
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
COM7
N.C.
NO7
CLK
GND
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
DOUT
DIN
N.C.
LE
N.C.
CLR
V
N.C.
N.C.
PP
NN
DD
N.C.
NO0
N.C.
N.C.
N.C.
N.C.
COM0
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
COM8
N.C.
NO8
COM15
N.C.
N.C.
NO15
N.C.
N.C.
COM1
N.C.
COM14
N.C.
NO14
N.C.
0.5 mm
COM2
N.C.
N.C.
N.C.
COM13
N.C.
NO3
N.C.
N.C.
N.C.
NO12
N.C.
COM12
N.C.
G
H
J
NO2
N.C.
NO6
N.C.
NO9
N.C.
NO13
N.C.
COM5
N.C.
COM10
N.C.
NO11
N.C.
COM4
N.C.
COM6
N.C.
COM9
N.C.
COM11
N.C.
K
NO5
NO10
N.C.
0.5 mm
WLP
(5.81mm x 5.43mm)
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MAX14802/MAX14803/
MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
Pin Description
PIN
NAME
FUNCTION
LQFP
WLP
A1, A3, A5, A8, A9,
A11, B1–B5, B10, B11,
C1, C3, C5, C6, C7,
C9, C11, D2, D4–D8,
D10, E1, E3–E9, E11,
F2, F4–F8, F10, G1,
G3, G5, G6, G7, G9,
G11, H2, H4, H6, H8,
H10, J1, J3, J5, J6, J7,
J9, J11, K1, K2, K4,
K6, K8, K10, K11
1, 2, 14, 16, 24,
35, 36
N.C.
No Connection. Not internally connected.
3
4
J2
H1
F3
F1
G2
E2
D3
D1
C2
C4
COM4
NO4
Analog Switch 4—Common Terminal
Analog Switch 4—Normally-Open Terminal
Analog Switch 3—Normally-Open Terminal
Analog Switch 3—Common Terminal
Analog Switch 2—Normally-Open Terminal
Analog Switch 2—Common Terminal
Analog Switch 1—Common Terminal
Analog Switch 1—Normally-Open Terminal
Analog Switch 0—Normally-Open Terminal
Analog Switch 0—Common Terminal
5
NO3
6
COM3
NO2
7
8
COM2
COM1
NO1
9
10
11
12
NO0
COM0
Negative High-Voltage Supply. Bypass V
greater ceramic capacitor.
to GND with a 0.1µF or
NN
13
A4
V
NN
Positive High-Voltage Supply. Bypass V to GND with a 0.1µF or
PP
15
17
18
A2
B6
V
PP
greater ceramic capacitor.
GND
Ground
Digital Supply Voltage. Bypass V
ceramic capacitor.
to GND with a 0.1µF or greater
DD
A10
V
DD
19
20
21
22
23
25
26
27
28
29
30
31
B7
A6
DIN
CLK
LE
Serial-Data Input
Serial-Clock Input
B8
Active-Low, Latch-Enable Input
Latch Clear Input
B9
CLR
DOUT
A7
Serial-Data Output
C8
COM15 Analog Switch 15—Common Terminal
C10
D11
D9
NO15
NO14
Analog Switch 15—Normally-Open Terminal
Analog Switch 14—Normally-Open Terminal
COM14 Analog Switch 14—Common Terminal
COM13 Analog Switch 13—Common Terminal
E10
G10
F11
NO13
Analog Switch 13—Normally-Open Terminal
COM12 Analog Switch 12—Common Terminal
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MAX14802/MAX14803/
MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
Pin Description (continued)
PIN
NAME
FUNCTION
LQFP
32
33
34
37
38
39
40
41
42
43
44
45
46
47
48
WLP
F9
NO12
NO11
Analog Switch 12—Normally-Open Terminal
Analog Switch 11—Normally-Open Terminal
H11
J10
H9
K9
COM11 Analog Switch 11—Common Terminal
COM10 Analog Switch 10—Common Terminal
NO10
COM9
NO9
Analog Switch 10—Normally-Open Terminal
Analog Switch 9—Common Terminal
Analog Switch 9—Normally-Open Terminal
Analog Switch 8—Common Terminal
Analog Switch 8—Normally-Open Terminal
Analog Switch 7—Normally-Open Terminal
Analog Switch 7—Common Terminal
Analog Switch 6—Normally-Open Terminal
Analog Switch 6—Common Terminal
Analog Switch 5—Normally-Open Terminal
Analog Switch 5—Common Terminal
J8
G8
H7
K7
COM8
NO8
K5
NO7
H5
G4
J4
COM7
NO6
COM6
NO5
K3
H3
COM5
D
N
D
N-1
DIN
D
N+1
50%
50%
LE
50%
50%
t
WL
t
CS
50%
50%
CLK
t
t
DH
DS
t
DO
50%
DOUT
t
t
OFF
ON
OFF
ON
90%
SWITCH
CLR
10%
50%
50%
t
WC
Figure 1. Serial Interface Timing
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MAX14802/MAX14803/
MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
Functional Diagram
V
V
PP
DD
CLR
DIN
V
PP
COM0
NO0
*
*
LEVEL
SHIFTER
LATCH
V
NN
V
NN
MAX14802
MAX14803
MAX14803A
16-BIT
SHIFT
REGISTER
CLK
V
PP
COM15
NO15
DOUT
*
*
LEVEL
SHIFTER
LATCH
V
NN
V
NN
LE
GND
V
NN
*BLEED RESISTORS AVAILABLE ON THE MAX14803/MAX14803A ONLY.
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MAX14802/MAX14803/
MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
Bleed Resistors (MAX14803/MAX14803A)
Detailed Description
The MAX14803/MAX14803A feature integrated 35kΩ
bleed resistors to discharge capacitive loads such as
piezoelectric transducers. Each analog switch terminal is
connected to GND with a bleed resistor.
The MAX14802/MAX14803/MAX14803A provide high-
voltage switching on 16 channels for ultrasound imaging
and printer applications. The devices utilize HVCMOS
process technology to provide 16 high-voltage low-
charge-injection SPST switches, controlled by a digital
interface. Data is clocked into an internal 16-bit shift reg-
ister 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.
Overvoltage Protection
The MAX14802/MAX14803/MAX14803A feature clamp-
ing diodes (at the COM_). These clamping diodes provide
overvoltage protection against positive overshoot.
The MAX14802/MAX14803/MAX14803A operate with a
Serial Interface
wide range of high-voltage supplies including: V /V
PP NN
The MAX14802/MAX14803/MAX14803A are controlled
by a serial interface with a 16-bit serial shift register and
transparent latch. Each of the 16 data bits controls a
single analog switch (Table 1). Data on DIN is clocked
with the most significant bit (MSB) first into the shift reg-
ister 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 16 clock cycles
(Figures 1 and 2).
= +100V/-100V, +200V/0V, or +40V/-160V. The digital
interface operates from a separate +2.7V to +5.5V V
DD
supply. Digital inputs DIN, CLK, LE, and CLR operate on
the V supply voltage. The MAX14803/MAX14803A
DD
provide integrated 35kΩ bleed resistors on each switch
terminal to discharge capacitive loads. The MAX14802/
MAX14803/MAX14803A feature clamping diodes (at the
COM_). These clamping diodes provide overvoltage pro-
tection against positive overshoot.
Latch Enable (LE)
Analog Switch
The MAX14802/MAX14803/MAX14803A allow a peak-
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.
to-peak analog signal range from V
to the minimum of
NN
either V
+ 200V or (V
- 10V). Analog switch inputs
NN
PP
must be unconnected, or satisfy V
≤ (V
, V
) ≤
NN
COM_ NO_
V
PP
during power-up and power-down.
High-Voltage Supplies
The MAX14802/MAX14803/MAX14803A allow a wide
range of high-voltage supplies. The devices operate with
Latch Clear (CLR)
V
NN
from -160V to 0 and V
from +40V to V
+250V.
PP
NN
The MAX14802/MAX14803/MAX14803A 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.
When V
is connected to GND (single-supply applica-
NN
tions), the devices operate with V
up to +200V. The
PP
V
PP
and V
high-voltage supplies are not required to be
NN
symmetrical, but the voltage difference (V - V ) must
PP
NN
not exceed 250V.
Power-On Reset
The MAX14802/MAX14803/MAX14803A feature a pow-
er-on-reset circuit to ensure all switches are open at
power-on. The internal 16-bit serial shift register and latch
are set to zero on power-up.
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MAX14802/MAX14803/
MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
LE
CLK
DIN
D15
D14
D14
D13
D13
D1
D1
D0
LSB
MSB
D15
D15
D0
DOUT
DATA FROM PREVIOUS DATA BYTE
POWER-UP DEFAULT: D15–D0 = 0
Figure 2. Latch Enable Interface Timing
Table 1. Serial Interface Programming (Notes 4–9)
CONTROL
DATA BITS
BITS
FUNCTION
D0
(LSB)
D1 D2 D3 D4
D5
D6
D7
LE CLR SW0 SW1 SW2 SW3 SW4
SW5 SW6 SW7
L
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
H
L
H
L
OFF
ON
OFF
ON
H
L
H
OFF
ON
L
OFF
ON
H
L
OFF
ON
H
L
OFF
ON
H
L
H
X
X
OFF
ON
X
X
X
X
X
X
X
X
X
X
X
X
X
X
HOLD PREVIOUS STATE
OFF OFF OFF OFF
OFF
OFF
OFF
OFF
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MAX14802/MAX14803/
MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
Table 1. Serial Interface Programming (Notes 4–9) (continued)
CONTROL
DATA BITS
BITS
FUNCTION
D15
(MSB)
D8
D9 D10 D11 D12 D13 D14
LE CLR SW8 SW9 SW10 SW11 SW12 SW13 SW14 SW15
L
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
H
L
H
L
OFF
ON
OFF
ON
H
L
H
OFF
ON
L
H
OFF
ON
L
H
OFF
ON
L
OFF
ON
H
L
H
X
X
OFF
ON
X
X
X
X
X
X
X
X
X
X
X
X
X
X
HOLD PREVIOUS STATE
OFF OFF OFF OFF
OFF
OFF
OFF
OFF
X = Don’t care.
Note 4: The 16 switches operate independently.
Note 5: Serial data is clocked in on the rising edge of CLK.
Note 6: The switches go to a state retaining their present condition on the rising edge of LE. When LE is low, the shift register data
flows through the latch.
Note 7: DOUT is high when switch 15 is on.
Note 8: Shift register clocking has no effect on the switch states if LE is high.
Note 9: The CLR input overrides all other inputs.
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MAX14802/MAX14803/
MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
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 can be included anywhere in series with the
MAX14802/MAX14803/MAX14803A data chain.
Applications Information
For medical ultrasound applications, see Figures 4, 5,
and 6.
Logic Levels
The MAX14802/MAX14803/MAX14803A digital interface
Supply Sequencing and Bypassing
The MAX14802/MAX14803/MAX14803A do not require
inputs CLK, DIN, LE, and CLR operate on the V
sup-
DD
ply voltage.
special sequencing of the V , V , and V supply
DD
PP
NN
Daisy-Chaining Multiple Devices
voltages; however, analog switch inputs must be uncon-
nected, or satisfy V ≤ (V , V ) ≤ V during
Digital output DOUT is provided to allow the connection
of multiple MAX14802/MAX14803/MAX14803A devices
by daisy-chaining (Figure 3). Connect each DOUT to the
DIN of the subsequent device in the chain. Connect CLK,
NN
COM_
NO_
PP
power-up and power-down. Bypass V , V , and V
DD PP
NN
to GND with a 0.1μF ceramic capacitor as close as pos-
sible to the device.
Application Diagrams
U11
U10
U1n
DIN1
DOUT
DOUT
DOUT
DIN
DIN
DIN
MAX14802
MAX14803
MAX14803A
MAX14802
MAX14803
MAX14803A
MAX14802
MAX14803
MAX14803A
CLK
CLK
CLK
CLK
LE
LE
LE
LE
CLR
CLR
CLR
CLR
U21
U20
U2n
DOUT
DOUT
DOUT
DIN
DIN
DIN
DIN2
MAX14802
MAX14803
MAX14803A
MAX14802
MAX14803
MAX14803A
MAX14802
MAX14803
MAX14803A
CLK
CLK
CLK
LE
LE
LE
CLR
CLR
CLR
Figure 3. Interfacing Multiple Devices by Daisy-Chaining
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MAX14802/MAX14803/
MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
PROBES
MAINFRAME
HIGH-VOLTAGE TRANSMIT
1 PER CHANNEL
PROBE SELECTION
2 TO 4 PROBES
CABLE
1 PER CHANNEL
TRANSDUCERS
2 TO 4 PER CHANNEL
±1 TO 2A MAX
±100V MAX
RELAY
1 RELAY/CH/PROBE
PROBE
A
HV ANALOG
SWITCHES
2 TO 4 PER CHANNEL
PROBE
B
+V
10mA TYP
LOW-VOLTAGE RECEIVE
64 TO 128 CHANNELS
PROBE
C
±1V MAX
HIGH-
VOLTAGE
ISOLATION
PROBE
D
-V
Figure 4. Medical Ultrasound Application—High-Voltage Analog Switches in Probe
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MAX14802/MAX14803/
MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
PROBES
MAINFRAME
HV ANALOG
HV TRANSMIT
1 PER CHANNEL
PROBE SELECTION
2 TO 4 PROBES
CABLE
2 TO 4 PER CHANNEL
TRANSDUCERS
2 TO 4 PER CHANNEL
SWITCHES
2 TO 4 PER CHANNEL
±100V MAX
±1 TO 2A MAX
+V
PROBE
A
RELAYS
2 TO 4 RELAYS/CH/PROBE
10mA TYP
LV RECEIVE
64 TO 128 CHANNELS
±1V MAX
HIGH-
VOLTAGE
ISOLATION
PROBE
B
-V
PROBE
C
PROBE
D
Figure 5. Medical Ultrasound Application—High-Voltage Analog Switches in Mainframe
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MAX14802/MAX14803/
MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
PROBES
MAINFRAME
HIGH-VOLTAGE TRANSMIT
2 TO 4 PER CHANNEL
PROBE SELECTION
2 TO 4 PROBES
CABLE
2 TO 4 PER CHANNEL
TRANSDUCERS
2 TO 4 PER CHANNEL
±1 TO 2A MAX
±100V MAX
RELAYS
2 TO 4 RELAYS/CH/PROBE
PROBE
A
+V
-V
LOW-VOLTAGE RECEIVE
64 TO 128 CHANNELS
10mA TYP
±1V MAX
PROBE
B
+V
-V
+V
-V
+V
-V
PROBE
C
+V
-V
+V
-V
PROBE
D
+V
-V
+V
-V
HIGH-VOLTAGE
ISOLATION AND
CHANNEL SELECT
2 TO 4 PER CHANNEL
Figure 6. Medical Ultrasound Application—Multiple Transmit and Isolation per Receiver Channel
Ordering Information/Selector Guide
SWITCH
CHANNELS
PART
BLEED RESISTOR
OVP
PIN-PACKAGE
TEMP RANGE
MAX14802CCM+
MAX14802ECM+
MAX14803CCM+
MAX14803AEWZ+
16
16
16
16
No
No
Yes
Yes
Yes
Yes
48 LQFP
48 LQFP
48 LQFP
110 WLP
0°C to +70°C
-40°C to +85°C
0°C to +70°C
-40°C to +85°C
Yes
Yes
+Denotes a lead(Pb)-free/RoHS-compliant package.
Chip Information
PROCESS: BiCMOS
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MAX14802/MAX14803/
MAX14803A
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
Revision History
REVISION REVISION
PAGES
CHANGED
DESCRIPTION
NUMBER
DATE
0
4/09
Initial release
—
Corrected two specifications in the Absolute Maximum Ratings section,
changed the minimum of the peak-to-peak analog signal range to “either V
1
2
9/09
+ 200V
2, 9
NN
or (V – 10V)”
PP
Deleted the MAX14800/MAX14801 from the entire data sheet and added the
MAX14803A; added the WLP part to the Ordering Information, Pin Configurations, Pin
Descriptions, and Package Information sections
11/10
1–19
3
4
8/11
6/13
Added extended temperature information; added MAX14802ECM+ to data sheet
1
Updated Absolute Maximum Ratings and Operating Supply Voltages
1, 2
Updated the General Description, Absolute Maximum Ratings, Pin Configuration, Pin
Description, Package Thermal Characteristics, Package Information, and Ordering
Information sections
1‒2, 8‒9,
18‒19
5
2/21
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.
©
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