MAX4800CXZ+T [MAXIM]
SPST, 1 Func, 1 Channel, BCDMOS, PBGA26, 6 X 5.30 MM, 1.20 MM HEIGHT, 0.65 MM PITCH, ROHS COMPLIANT, CSBGA-26;
| 型号： | MAX4800CXZ+T |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | SPST, 1 Func, 1 Channel, BCDMOS, PBGA26, 6 X 5.30 MM, 1.20 MM HEIGHT, 0.65 MM PITCH, ROHS COMPLIANT, CSBGA-26 开关 高压 |
| 文件： | 总16页 (文件大小：203K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-0631; Rev 2; 5/09
Low-Charge Injection,
8-Channel, High-Voltage Analog Switches
1/MAX4802
General Description
Features
The MAX4800/MAX4801/MAX4802 provide high-volt-
age 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 digital
interface. Data is clocked into an internal 8-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.
♦ 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 V - V
=
PP
NN
200V
The MAX4800/MAX4801/MAX4802 operate with a wide
range of high-voltage supplies including: V /V
=
PP NN
♦ Low-Charge Injection, Low-Capacitance 22Ω
+100V/-100V, +185V/-15V, and +40V/-160V. The digital
interface operates from a separate V supply from
Switches
DD
♦ DC to 10MHz Analog-Signal Frequency Range
♦ -77dB Off Isolation at 5MHz
+2.7V to +13.2V. Digital inputs DIN, CLK, LE, and CLR
are +13.2V tolerant, independent of the V supply
DD
voltage. The MAX4802 provides integrated 35kΩ bleed
resistors on each switch terminal to discharge capaci-
tive loads.
♦ Low 10µA Quiescent Current
♦ Integrated Bleed Resistors (MAX4802)
♦ Available in PLCC, TQFP, and CSBGA Packages
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 28-
pin 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.
Applications
Ultrasound Imaging
Printers
Ordering Information/Selector Guide
PART
MAX4800CCM
BLEED RESISTORS
SECOND SOURCE
HV20220FG
HV20220PJ
HV220**
PIN-PACKAGE
48 TQFP
No
No
MAX4800CQI
MAX4800CXZ
MAX4801CQI
MAX4802CCM
MAX4802CQI
MAX4802CXZ
28 PLCC
No
26 CSBGA
28 PLCC
No
HV20320PJ
HV232FG
Yes
Yes
Yes
48 TQFP
HV232PJ
28 PLCC
HV230GA
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
1
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.
Low-Charge Injection,
8-Channel, High-Voltage Analog Switches
ABSOLUTE MAXIMUM RATINGS
(All voltages referenced to GND.)
48-Pin TQFP (derate 22.7mW/°C above +70°C).........1818mW
V
V
V
V
Logic-Supply Voltage .....................................-0.5V to +15V
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
DD
PP
PP
NN
- V
Supply Voltage ....................................................220V
NN
Positive-Supply Voltage........................-0.5V to V
+ 220V
NN
Negative-Supply Voltage..............................+0.5V to -220V
Logic Inputs LE, CLR, CLK, DIN ............................-0.5V to +15V
DOUT............................................................-0.5V to V + 0.5V
RGND (MAX4802) .................................................-4.5V to +0.5V
COM_, NO_.................................................................V to V
DD
NN
PP
Continuous Power Dissipation (T = +70°C)
A
28-Pin PLCC (derate 10.5mW/°C above +70°C) ..........842mW
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V
DD
= +2.7V to +13.2V, V = +40V to V
+ 200V, V
= -15V to -160V, T = T
A
to T
, unless otherwise noted. Typical values
MAX
PP
NN
NN
MIN
are at T = +25°C.) (Note 1)
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
ANALOG SWITCH
V
V
,
V
+
V
PP
10
-
COM_
NN
10
Analog Signal Range
(Note 2)
V
NO_
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
= 0°C
30
38
48
25
27
32
25
27
30
18
24
27
23
25
30
22
25
27
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
I
I
= 5mA
=
= +25°C
= +70°C
= 0°C
26
22
22
18
20
16
COM
V
V
V
= +40V,
= -160V,
PP
NN
= 0
COM_
COM
1/MAX4802
= +25°C
= +70°C
= 0°C
200mA
I
= 5mA
= +25°C
= +70°C
= 0°C
COM
V
V
V
= +100V,
= -100V,
PP
Small-Signal Switch
On-Resistance
R
Ω
ONS
NN
= 0
COM_
I
=
COM
= +25°C
= +70°C
= 0°C
200mA
V
V
or
V
V
V
= +160V,
= -40V
PP
I
= 5mA
= +25°C
= +70°C
= 0°C
COM
NN
= +185V,
= -15V,
PP
I
=
COM
NN
= +25°C
= +70°C
200mA
= +100V, V = -100V,
PP NN
= 0
COM _
Small-Signal Switch
On-Resistance Matching
V
V
ΔR
5
20
%
Ω
ONS
= 0, I
= 5mA
COM_
COM
Large-Signal Switch
On-Resistance
R
V
= V - 10V, I = 1A
COM
15
35
ONL
COM_
PP
NO_ or COM_ to RGND (MAX4802), switch
off
Shunt Resistance
R
30
50
kΩ
INT
2
_______________________________________________________________________________________
Low-Charge Injection,
8-Channel, High-Voltage Analog Switches
1/MAX4802
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= +2.7V to +13.2V, V = +40V to V
+ 200V, V
= -15V to -160V, T = T
A
to T
, unless otherwise noted. Typical values
MAX
PP
NN
NN
MIN
are at T = +25°C.) (Note 1)
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
T
A
= +25°C
1
4
V
, V
= V - 10V or
COM_ NO_ PP
I
unconnected;
RGND unconnected
(MAX4802)
COM_(OFF),
Switch-Off Leakage
µA
T
to T
= T
A
MIN
MAX
I
NO_(OFF)
10
R = 100kΩ (MAX4800/MAX4801),
No load (MAX4802)
L
Switch-Off DC Offset
Switch-On DC Offset
100
100
300
500
mV
mV
R =100kΩ (MAX4800/MAX4801),
L
No load (MAX4802)
T
A
T
A
T
A
= 0°C
3
2
2
Switch-Output Peak Current
(Note 3)
I
duty cycle ≤ 0.1%
= +25°C
= +70°C
3
A
COM_
V
– V
≤ 200V
PP
NN
300
30
COM_, NO1–NO7
V – V
PP
≤ 200V, NO0
Switch-Output Isolation Diode
Current
(Note 3)
300ns pulse width, 2%
duty cycle
NN
mA
V
– V ≤ 160V
PP
NN
750
COM_, NO_
SWITCH DYNAMIC CHARACTERISITICS
f = 5MHz, R = 1kΩ, C = 15pF
-30
-58
-60
-33
-77
-80
L
L
Off-Isolation (Note 3)
Crosstalk (Note 3)
V
dB
dB
ISO
f = 5MHz, R = 50Ω
L
V
f = 5MHz, R = 50Ω
L
CT
COM_, NO_
Off-Capacitance
(Note 3)
C
COM_
V
= 0, V = 0, f = 1MHz
NO_
4
11
36
18
pF
(OFF),
COM_
COM_
C
NO_ (OFF)
COM_ On-Capacitance
(Note 3)
C
COM_
(ON)
V
= 0, f = 1MHz
20
56
pF
Output-Voltage Spike (Note 3)
V
R = 50Ω
L
-150
+150
mV
SPK
V
V
V
= +40V, V = -160V, V = 0
COM_
820
600
350
PP
PP
PP
NN
Charge Injection
Q
pC
= +100V, V = -100V, V
= 0
COM_
NN
= +160V, V = -40V, V
NN
= 0
COM_
LOGIC LEVELS
V
V
≥ +4.5V
1.5
DD
DD
Logic-Input Low Voltage
V
V
V
IL
< +4.5V
0.75
V
1.5
-
DD
V
V
≥ +4.5V
DD
DD
Logic-Input High Voltage
V
IH
V
0.75
-
DD
< +4.5V
Logic-Input Capacitance (Note 3)
Logic-Input Leakage
C
10
+1
0.4
0.4
pF
µA
V
IN
I
IN
-1
V
V
≥ +4.5V, I
= 1mA
DD
DD
SINK
DOUT Low Voltage
V
OL
< +4.5V, I
= 0.5mA
V
SINK
_______________________________________________________________________________________
3
Low-Charge Injection,
8-Channel, High-Voltage Analog Switches
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= +2.7V to +13.2V, V = +40V to V
+ 200V, V
= -15V to -160V, T = T
A
to T
, unless otherwise noted. Typical values
MAX
PP
NN
NN
MIN
are at T = +25°C.) (Note 1)
A
PARAMETER
DOUT High Voltage
POWER SUPPLIES
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V
-
DD
V
V
≥ +4.5V, I
= 0.5mA
V
DD
DD
SOURCE
0.5
V
OH
V
-
DD
< +4.5V, I
= 0.25mA
V
SOURCE
0.5
V
Supply Voltage
2.7
40
13.2
V
V
DD
V
+
NN
V
Supply Voltage
PP
200
V
V
Supply Voltage
-160
-15
15
V
NN
DD
Supply Quiescent Current
I
V
V
= 0, V = V , f = 0
DD CLK
µA
DDQ
IL
IH
= +5V, V = 0, V = +5V,
DD
IL
IH
V
V
Supply Dynamic Current
Supply Quiescent Current
I
4
mA
µA
DD
PP
DD
f
= 5MHz
CLK
All switches remain on or off, I
5mA
=
COM_(ON)
I
10
50
PPQ
T
T
T
T
T
T
T
T
T
= 0°C
6.5
6.5
6.5
4.0
4.0
4.0
4.0
4.0
4.0
A
A
A
A
A
A
A
A
A
V
V
= +40V,
= -160V
PP
= +25°C
= +70°C
= 0°C
NN
50kHz
output
switching
frequency
with no load
V
V
= +100V,
= -100V
PP
= +25°C
= +70°C
= 0°C
V
V
V
Supply Dynamic Current
Supply Quiescent Current
Supply Dynamic Current
I
mA
µA
PP
PP
1/MAX4802
NN
V
V
= +160V,
= -40V
PP
= +25°C
= +70°C
NN
All switches remain on or off, I
5mA
=
COM_(ON)
I
10
50
NN
NN
NNQ
T
T
T
T
T
T
T
T
T
= 0°C
6.5
6.5
6.5
4.0
4.0
4.0
4.0
4.0
4.0
A
A
A
A
A
A
A
A
A
V
V
= +40V,
= -160V
PP
= +25°C
= +70°C
= 0°C
NN
50kHz
output
switching
frequency
with no load
V
V
= +100V,
= -100V
PP
= +25°C
= +70°C
= 0°C
I
mA
NN
NN
V
V
= +160V,
= -40V
PP
= +25°C
= +70°C
NN
4
_______________________________________________________________________________________
Low-Charge Injection,
8-Channel, High-Voltage Analog Switches
1/MAX4802
TIMING CHARACTERISTICS
(V
DD
= +2.7V to +13.2V, V = +40V to V
+ 200V, V
= -15V to -160V, T = T
A
to T
, unless otherwise noted. Typical values
MAX
PP
NN
NN
MIN
are at T = +25°C.) (Note 1)
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
ANALOG SWITCH
V
= V - 10V, R = 10kΩ, V
= -40V
= -40V
NO_
PP
L
NN
NN
Turn-On Time
t
5
µs
ON
to -160V
V
= V - 10V, R = 10kΩ, V
NO_
PP
L
Turn-Off Time
t
5
µs
OFF
to -160V
Output Switching Frequency
f
Duty cycle = 50%
50
kHz
V/ns
SW
Maximum V
, V
Slew
COM_ NO_
dV/dt
(Note 3)
20
Rate
LOGIC TIMING (Figure 1)
V
V
V
V
≥ +4.5V
≤ +4.5V
≥ +4.5V
< +4.5V
5
2.5
10
4
DD
DD
DD
DD
Daisy chaining
CLK Frequency
f
MHz
CLK
No daisy chaining
V
V
V
V
V
V
V
V
V
V
V
V
≥ +4.5V
< +4.5V
≥ +4.5V
< +4.5V
≥ +4.5V
< +4.5V
≥ +4.5V
< +4.5V
≥ +4.5V
< +4.5V
15
40
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DIN to CLK Setup Time
DIN to CLK Hold Time
CLK to LE Setup Time
LE Low-Pulse Width
t
ns
ns
ns
ns
ns
µs
DS
35
t
DH
60
150
300
150
300
150
300
t
CS
WL
WC
t
CLR High-Pulse Width
CLK Rise and Fall Times
t
≥ +4.5V (Note 3)
1
t , t
R
F
< +4.5V (Note 3)
1
T
T
T
= 0°C
55
60
70
150
150
150
A
A
A
V
C
= +5V 10%,
≤ 50pF
DD
= +25°C
= +70°C
L
CLK to DOUT Delay
t
ns
DO
V
C
= +3V 10%,
≤ 50pF
DD
T
= T
to T
MAX
70
280
A
MIN
L
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 V
and V
must satisfy V
≤ (V
, V
) ≤ V , or remain unconnected during power-up
COM_
NO_
NN
COM_ NO_ PP
and power-down.
Note 3: Guaranteed by characterization; not production tested.
_______________________________________________________________________________________
5
Low-Charge Injection,
8-Channel, High-Voltage Analog Switches
Typical Operating Characteristics
(V
DD
= +5V, V = +100V, V
= -100V, T = +25°C, unless otherwise noted.)
A
PP
NN
ON-RESISTANCE
vs. TEMPERATURE
I
SUPPLY CURRENT
DD
OFF-ISOLATION vs. FREQUENCY
vs. CLOCK FREQUENCY
-100
-95
-90
-85
-80
-75
-70
-65
-60
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
30
25
20
15
10
5
R
= R = 50Ω
L
S
I
= 5mA
SW
DIN = 01010101
DIN = 00000000
I
= 200mA
SW
0
1
10
0
10
20
30
40
50
60
70
0.01
0.1
1
10
FREQUENCY (MHz)
TEMPERATURE (°C)
CLOCK FREQUENCY (MHz)
ON-RESISTANCE
SUPPLY CURRENT
vs. V /V SUPPLY VOLTAGE
t
vs. TEMPERATURE
DO
vs. SWITCHING FREQUENCY
PP NN
40
35
30
25
20
15
10
5
6.0
5.0
4.0
3.0
2.0
1.0
180
160
140
120
100
80
ALL SWITCHES OPERATING
ALL SWITCHES CONNECTED TO GND
V
= +3V
I
DD
NN
T
= +70°C
A
I
PP
V
= +5V
DD
1/MAX4802
60
T
A
= 0°C
T
A
= +25°C
40
20
I
DD
0
0
0
+40/ +60/
-160 -140
+80/ +100/ +120/ +140/ +160/
0
10
20
30
40
50
60
70
0
10 20 30 40 50 60 70 80 90 100
SWITCHING FREQUENCY (kHz)
-120 -100
-80
-60
-40
TEMPERATURE (°C)
V
/V SUPPLY VOLTAGE (V)
PP NN
SUPPLY CURRENT
LOGIC THRESHOLD
vs. V /V SUPPLY VOLTAGE
vs. V SUPPLY VOLTAGE
PP NN
DD
0.45
0.40
0.35
0.30
0.25
0.20
8
7
6
5
4
3
2
1
0
ONE SWITCH OPERATING
ALL SWITCHES CONNECTED TO GND
f
= 50kHz
SW
I
NN
RISING
FALLING
I
PP
+40/ +60/
-160 -140
+80/ +100/ +120/ +140/ +160/
-120 -100 -80 -60 -40
2
4
6
8
10
12
14
V
DD
SUPPLY VOLTAGE (V)
V
/V SUPPLY VOLTAGE (V)
PP NN
6
_______________________________________________________________________________________
Low-Charge Injection,
8-Channel, High-Voltage Analog Switches
1/MAX4802
Pin Descriptions
PIN
NAME
FUNCTION
MAX4800
TQFP
MAX4800
CSBGA
MAX4800
PLCC
MAX4801
PLCC
1
E4
26
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
11, 14, 15
N.C.
No Connection. Not connected internally.
3
E1
E3
D1
D3
D4
C3
C4
A4
C5
D5
27
28
1
27
28
1
COM4
NO4
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
Analog Switch 0 – Normally Open Terminal
5
8
COM3
NO3
10
12
14
16
18
20
22
2
2
3
3
COM2
NO2
4
4
5
5
COM1
NO1
6
6
7
7
COM0
NO0
8
8
Positive High-Voltage Supply. Bypass V to GND
PP
with a 0.1μF or greater ceramic capacitor.
24
C6
10
9
V
PP
Negative High-Voltage Supply. Bypass V to GND
NN
with a 0.1μF or greater ceramic capacitor.
25
28
29
C7
D7
D9
12
13
14
10
12
13
V
NN
GND
Ground
Digital-Supply Voltage. Bypass V to GND with a
DD
0.1μF or greater ceramic capacitor.
V
DD
33
34
35
36
37
39
41
43
45
47
E9
E7
E6
F7
F6
E5
F5
F4
H4
F3
16
17
18
19
20
21
22
23
24
25
16
17
18
19
20
21
22
23
24
25
DIN
CLK
Serial Data Input
Serial Clock Input
LE
Latch Enable Input, Active Low
Latch Clear Input
CLR
DOUT
COM7
NO7
COM6
NO6
NO5
Serial Data Output
Analog Switch 7 – Common Terminal
Analog Switch 7 – Normally Open Terminal
Analog Switch 6 – Common Terminal
Analog Switch 6 – Normally Open Terminal
Analog Switch 5 – Normally Open Terminal
_______________________________________________________________________________________
7
Low-Charge Injection,
8-Channel, High-Voltage Analog Switches
Pin Descriptions (continued)
PIN
NAME
FUNCTION
MAX4802
TQFP
MAX4802
CSBGA
MAX4802
PLCC
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.
Not Connected Internally
3
E1
E3
D1
D3
D4
C3
C4
A4
C5
D5
27
28
1
COM4
NO4
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
Analog Switch 0 – Normally Open Terminal
5
8
COM3
NO3
10
12
14
16
18
20
22
2
3
COM2
NO2
4
5
COM1
NO1
6
7
COM0
NO0
8
Positive High-Voltage Supply. Bypass V to GND with a
PP
0.1μF or greater ceramic capacitor.
24
25
C6
C7
10
12
V
PP
1/MAX4802
Negative High-Voltage Supply. Bypass V to GND with a
NN
V
NN
0.1μF or greater ceramic capacitor.
Bleed Resistor Ground
Ground
27
28
D6
D7
11
13
RGND
GND
Digital-Supply Voltage. Bypass V to GND with a 0.1μF or
DD
greater ceramic capacitor.
29
D9
14
V
DD
33
34
35
36
37
39
41
43
45
47
E9
E7
E6
F7
F6
E5
F5
F4
H4
F3
16
17
18
19
20
21
22
23
24
25
DIN
CLK
Serial Data Input
Serial Clock Input
LE
Latch Enable Input, Active Low
Latch Clear Input
CLR
DOUT
COM7
NO7
COM6
NO6
NO5
Serial Data Output
Analog Switch 7 – Common Terminal
Analog Switch 7 – Normally Open Terminal
Analog Switch 6 – Common Terminal
Analog Switch 6 – Normally Open Terminal
Analog Switch 5 – Normally Open Terminal
8
_______________________________________________________________________________________
Low-Charge Injection,
8-Channel, High-Voltage Analog Switches
1/MAX4802
D
N-1
50%
D
N
50%
DIN
D
N+1
t
WL
50%
50%
LE
t
CS
50%
50%
CLK
t
t
DH
DS
t
DO
DOUT
ON
t
ON
90%
SWITCH
OFF
10%
t
OFF
50%
50%
CLR
t
WC
Figure 1. Serial Interface Timing
resistors on each switch terminal to discharge capaci-
tive loads.
Detailed Description
The MAX4800/MAX4801/MAX4802 provide high-volt-
age switching on eight channels for ultrasound imaging
and printer applications. The devices utilize BCDMOS
process technology to provide eight high-voltage low-
charge-injection SPST switches, controlled by a digital
interface. Data is clocked into an internal 8-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.
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-to-
peak analog signal range from V
+ 10V to V - 10V.
PP
NN
Analog switch inputs must be unconnected, or satisfy
The MAX4800/MAX4801/MAX4802 operate with a wide
V
≤ (V
, V
) ≤ V during power-up and
PP
NN
COM_
NO_
range of high-voltage supplies including: V /V
=
PP NN
power-down.
+100V/-100V, +185V/-15V, or +40V/-160V. The digital
interface operates from a separate V supply from
High-Voltage Supplies
The MAX4800/MAX4801/MAX4802 allow a wide range
DD
+2.7V to +13.2V. Digital inputs DIN, CLK, LE, and CLR
are +13.2V tolerant, independent of the V supply
of high-voltage supplies. The devices operate with V
NN
DD
from -160V to -15V and V from +40V to V + 200V.
voltage. The MAX4802 provides integrated 35kΩ bleed
PP
NN
_______________________________________________________________________________________
9
Low-Charge Injection,
8-Channel, High-Voltage Analog Switches
LE
CLK
DIN
D6
D6
D5
D5
D4
D4
D3
D3
D2
D2
D1
D1
D7
D0
MSB
LSB
DOUT
D7
D0
D7
DATA FROM PREVIOUS DATA BYTE POWER-UP DEFAULT: D7-D0 = 0
Figure 2. Latch Enable Interface Timing
When V
is connected to GND (single-supply applica-
Latch Enable (LE)
NN
1/MAX4802
tions), the devices operate with V up to +200V. The
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.
PP
V
and V
high-voltage supplies are not required to
PP
NN
be symmetrical, but the voltage difference V - V
PP
NN
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.
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.
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).
Power-On Reset
The MAX4800/MAX4801/MAX4802 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.
10 ______________________________________________________________________________________
Low-Charge Injection,
8-Channel, High-Voltage Analog Switches
1/MAX4802
Table 1. Serial Interface Programming
DATA BITS
CONTROL BITS
FUNCTION
D0
(LSB)
D7
(MSB)
D1
D2
D3
D4
D5
D6
CLR
SW0
SW1
SW2
SW3
SW4
SW5
SW6
SW7
LE
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
OFF
ON
H
L
OFF
ON
H
L
OFF
ON
H
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
X = Don’t Care
Supply Sequencing and Bypassing
The MAX4800/MAX4801/MAX4802 do not require spe-
cial sequencing of the V , V , and V supply volt-
Applications Information
Logic Levels
DD PP
NN
The MAX4800/MAX4801/MAX4802 digital interface
ages; however, analog switch inputs must be
unconnected, or satisfy V ≤ (V , V ) ≤ V
inputs CLK, DIN, LE, and CLR are tolerant of up to
NN
COM_
NO_
PP
,
+13.2V, independent of the V
supply voltage, allow-
DD
during power-up and power-down. Bypass V , V
DD NN
ing compatibility with higher voltage controllers.
and V
to GND with a 0.1µF ceramic capacitor as
PP
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 reg-
isters may be included anywhere in series with the
MAX4800/MAX4801/MAX4802 data chain.
Chip Information
PROCESS: BCDMOS
______________________________________________________________________________________ 11
Low-Charge Injection,
8-Channel, High-Voltage Analog Switches
U10
DOUT
U11
DOUT
U1n
DOUT
DIN
DIN
DIN
DIN
MAX4800
MAX4800
MAX4800
CLK
LE
CLK
LE
CLK
LE
CLK
LE
CLR
CLR
CLR
CLR
Figure 3. Interfacing Multiple Devices by Daisy-Chaining
Functional Diagrams
V
DD
V
PP
MAX4800
MAX4801
COM0
NO0
LEVEL
SHIFTER
1/MAX4802
DIN
SHIFT
REGISTER
LATCH
CLK
DOUT
COM7
NO7
LEVEL
SHIFTER
CLR
LE
V
GND
NN
12 ______________________________________________________________________________________
Low-Charge Injection,
8-Channel, High-Voltage Analog Switches
1/MAX4802
Functional Diagrams (continued)
V
DD
V
PP
MAX4802
COM0
NO0
LEVEL
SHIFTER
DIN
CLK
SHIFT
REGISTER
LATCH
COM7
NO7
DOUT
LEVEL
SHIFTER
CLR
LE
RGND
V
GND
NN
______________________________________________________________________________________ 13
Low-Charge Injection,
8-Channel, High-Voltage Analog Switches
Pin Configurations
TOP VIEW
27 26 25
36 35 34 33 32 31 30 29 28
V
37
38
39
40
24
DOUT
PP
23 N.C.
N.C.
COM7
NO0
22
21
N.C.
N.C.
NO7
N.C.
COM0
41
42
20
19
18
N.C.
NO1
MAX4800
MAX4802
COM6 43
N.C.
NO6
N.C.
44
45
46
17 N.C.
16 COM1
15
14
13
N.C.
NO2
N.C.
NO5 47
48
N.C.
10 11 12
9
1
2
3
4
5
6
7
8
TQFP
7mm x 7mm
1/MAX4802
()MAX4802 ONLY
4
3
2
1
28 27 26
4
3
2
1
28 27 26
5
6
NO5
5
6
NO5
25
24
23
22
25
24
23
COM1
NO1
COM1
NO1
NO6
NO6
COM6
NO7
COM6
COM0
NO0
COM0
NO0
7
7
MAX4800
MAX4802
MAX4801
8
22 NO7
8
9
21 COM7
9
21 COM7
N.C.
V
V
PP
DOUT
20
10
11
DOUT
10
11
20
V
PP
NN
19
CLR
19 CLR
N.C. (RGND)
N.C.
12 13 14 15 16 17 18
12 13 14 15 16 17 18
PLCC
PLCC
()MAX4802 ONLY
14 ______________________________________________________________________________________
Low-Charge Injection,
8-Channel, High-Voltage Analog Switches
1/MAX4802
Pin Configurations (continued)
TOP VIEW
1
2
3
4
5
6
7
8
9
A4
A
B
C
D
E
MAX4800
MAX4802
NO1
C3
NO2
D3
C4
C5
C6
C7
V
V
COM1 COM0
D4
D5
PP
NN
D6
D7
D9
D1
COM3
E1
V
NO3 COM2 NO0 N.C. (RGND)
GND
E7
DD
E3
E4
COM5 COM7
F4
F5
E5
E6
E9
LE
F6
NO4
F3
CLK
F7
COM4
DIN
F
NO5
COM6 NO7
DOUT
CLR
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
28 PLCC
PACKAGE CODE
Q28-4
DOCUMENT NO.
21-0049
26 CSBGA
48 TQFP
X07265-1
C48-6
21-0158
21-0054
______________________________________________________________________________________ 15
Low-Charge Injection,
8-Channel, High-Voltage Analog Switches
Revision History
REVISION REVISION
PAGES
CHANGED
DESCRIPTION
NUMBER
DATE
0
8/06
Initial release.
—
• Updated “Second Source” column and revised two package codes in the
Ordering Information/Selector Guide section.
• 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
1
2
3/07
5/09
• Added package drawing 21-0158 to the Package Information section.
Deleted TQFN from the Ordering Information/Selector Guide, Pin Descriptions, Pin
Configurations, and Package Information sections.
1, 7, 8, 14, 20, 21
1/MAX4802
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.
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