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PDF MAX14800 Data sheet ( Hoja de datos )
| Número de pieza | MAX14800 | |
| Descripción | (MAX14800 - MAX14803) High-Voltage Analog Switches | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MAX14800 (archivo pdf) en la parte inferior de esta página. Total 17 Páginas | ||
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19-4484; Rev 0; 4/09
www.DataSheet4U.com
Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
General Description
The MAX14800–MAX14803 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
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 MAX14800–MAX14803 operate with a wide range
of high-voltage supplies including: VPP/VNN = +100V/
-100V, +200V/0V, and +40V/-160V. The digital interface
operates from a separate +2.7V to +5.5V VDD supply.
Digital inputs DIN, CLK, LE, and CLR operate on the
VDD supply voltage.
The MAX14801/MAX14803 provide integrated 35kΩ
bleed resistors on each switch terminal to discharge
capacitive loads. The MAX14802/MAX14803 provide
integrated clamping diodes for overvoltage protection
against positive overshoot.
The MAX14800–MAX14803 are available in the
48-pin TQFP package. All devices are specified for the
commercial 0°C to +70°C temperature range.
Ultrasound Imaging
Printers
Applications
Features
o Integrated Overvoltage Protection (MAX14802/
MAX14803)
o 20MHz Serial Interface (5V)
o HVCMOS Technology for High Performance
o Individually Programmable High-Voltage Analog
Switches
o Very Low 5µA (typ) Quiescent Current
o DC-to-20MHz Low-Voltage Analog Signal
Frequency Range
o 2.7V to 5.5V Logic Supply Voltage
o Low-Charge Injection, Low-Capacitance RL
Switches
o -77dB (typ) Off-Isolation at 5MHz (RL = 50Ω)
o Daisy-Chainable Serial Interface
o Flexible High-Voltage Supplies (VPP - VNN = 250V)
Pin Configuration appears at end of data sheet.
Ordering Information/Selector Guide
PART
SWITCH
CHANNELS
BLEED
RESISTOR
OVP
SECOND
SOURCE
MAX14800CCM+*
16 No No HV2601
MAX14801CCM+*
16 Yes No HV2701
MAX14802CCM+
16
No Yes
—
MAX14803CCM+
16
Yes Yes
—
+Denotes a lead(Pb)-free/RoHS-compliant package.
*Future product—contact factory for availability.
Parts with extended temperature range (-40°C to +85°C) are available upon request.
PIN-PACKAGE
48 TQFP
48 TQFP
48 TQFP
48 TQFP
TEMP RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
________________________________________________________________ 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.
1 page  
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Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
Test Circuits
ISOL
+100V
-100V
NO_
COM_
+100V
VPP
VNN
-100V
MAX14800–
MAX14803
VPP VDD
VNN GND
SWITCH OFF LEAKAGE
VOUT
RL
100kΩ
5V VPP
VNN
NO_
COM_
MAX14800–
MAX14803
VPP VDD
VNN GND
DC OFFSET ON/OFF
VPP - 10V
RL
100kΩ
VOUT
NO_
COM_
+100V
MAX14800–
MAX14803
5V VPP VPP
VDD
VNN
-100V
VNN
GND
tON/tOFF TEST CIRCUIT
5V
VOUT = 10VP-P
AT 5MHz
VOUT
RL
VPP
VNN
NO_
COM_
MAX14800–
MAX14803
VPP VDD
VNN GND
VISO
=
20LOG
VOUT
VIN
OFF ISOLATION
COM_
VOUT
IID
NO_
VPP
VNN
5V
VPP
VNN
MAX14800–
VNN MAX14803
VPP VDD
VNN GND
ISOLATION DIODE CURRENT
VOUT = 10VP-P
AT 5MHz
50Ω
VPP
5V
VNN
NO_
COM_
NO_
COM_
MAX14800–
MAX14803
VPP VDD
VNN GND
VCT
=
20LOG
VOUT
VIN
CROSSTALK
50Ω
5V
VOUT
VOUT
VCOM_
NO_
100pF
COM_
MAX14800–
MAX14803
VPP VPP
VDD
VNN VNN
GND
+VSPK
-VSPK
VOUT
50Ω
RL
1kΩ
VDD VPP
VNN
NO_
COM_
MAX14800–
MAX14803
VPP VDD
VNN GND
5V
Q = 1000pF x VOUT
CHARGE INJECTION
OUTPUT-VOLTAGE SPIKE
_______________________________________________________________________________________ 5
5 Page 
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Low-Charge Injection, 16-Channel,
High-Voltage Analog Switches
Table 1. Serial Interface Programming (Notes 5–10) (continued)
DATA BITS
CONTROL
BITS
FUNCTION
D8
D9
D10
D11
D12
D13
D14
D15
(MSB)
LE
CLR SW8 SW9 SW10 SW11 SW12 SW13 SW14
SW15
L L L OFF
H L L ON
L
LL
OFF
H
LL
ON
L
LL
OFF
H
LL
ON
L
LL
OFF
H
LL
ON
L LL
OFF
H LL
ON
L LL
OFF
H LL
ON
L LL
OFF
H LL
ON
L LL
OFF
H LL
ON
X XX X X X X X H L
HOLD PREVIOUS STATE
X X X X X X X X X H OFF OFF OFF OFF OFF OFF OFF OFF
X = Don’t care.
Note 5: The 16 switches operate independently.
Note 6: Serial data is clocked in on the rising edge of CLK.
Note 7: 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 8: DOUT is high when switch 15 is on.
Note 9: Shift register clocking has no effect on the switch states if LE is high.
Note 10: The CLR input overrides all other inputs.
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet MAX14800.PDF ] | |
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