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PDF HV257FG-G Data sheet ( Hoja de datos )
| Número de pieza | HV257FG-G | |
| Descripción | 32-Channel High Voltage Sample and Hold Amplifier Array | |
| Fabricantes | Supertex | |
| Logotipo |  |
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Supertex inc.
HV257
32-Channel High Voltage
Sample and Hold Amplifier Array
Features
►► 32 independent high voltage amplifiers
►► 300V operating voltage
►► 295V output voltage
►► 2.2V/µs typical output slew rate
►► Adjustable output current source limit
►► Adjustable output current sink limit
►► Internal closed loop gain of 72V/V
►► 12MΩ feedback impedance
►► Layout ideal for die applications
Applications
►► MEMS (microelectromechanical systems)
driver
►► Piezoelectric transducer driver
►► Optical crosspoint switches (using MEMS
technology)
General Description
The Supertex HV257 is a 32-channel, high voltage, sample and hold
amplifier array integrated circuit. It operates on a single high voltage
supply, up to 300V, and two low voltage supplies, VDD and VNN.
All 32 sample and hold circuits share a common analog input, VSIG.
The individual sample and hold circuits are selected by a 5 to 32
logic decoder. The sampled voltage on the holding capacitor is
buffered by a low voltage amplifier and amplified by a high voltage
amplifier with a closed loop gain of 72V/V. The internal closed
loop gain is set for an input voltage range of 0 to 4.096V. The
input voltage can be up to 5.0V, but the output will saturate. The
maximum output voltage swing is 5.0V below the VPP high voltage
supply. The outputs can drive capacitive loads of up to 3000pF.
The maximum output source and sink current can be adjusted by
using two external resistors. An external RSOURCE resistor controls the
maximum sourcing current, and an external RSINK resistor controls
the maximum sinking current. The current limit is approximately
12.5V divided by the external resistor value. The setting is common
for all 32 outputs. A low voltage silicon junction diode is made
available to help monitor the die temperature.
Typical Application Circuit
DAC
Micro
Processor
HV257
High Voltage
Power Supply
VSIG
Low Voltage
Power Supply
A0
A1 32
Low Voltage
A2 Channel
A3 Select
Sample
A4 and Hold
EN
High
Voltage
OpAmp
Array
HVOUT0
HVOUT1
HVOUT2
HVOUT3
HVOUT30
HVOUT31
DGND
AGND
VNN
y
xx
y
MEMS
Array
Doc.# DSFP-HV257
D070813
Supertex inc.
www.supertex.com
1 page  
HV257
Decoder Truth Table
A4 A3 A2 A1 A0 EN Selected S/H
L L L L LH
0
L L L LHH
1
L L LHLH
2
L L LHHH
↕↕↕↕↕↕
3
↕
HHHH LH
30
HHHHHH
31
X X X X X L All Open
Sample and Hold Timing
A0-A4
tSU
EN Hold
HVOpamp
Sample
tR/F
tH
Hold
Hold Step
(VPEDESTAL)
Acquisition Window
Temperature Diode
Sym Parameter
PIV Peak inverse voltage
VF Forward diode drop
IF Forward diode current
TC VF temperature coefficient
Min Typ Max Units Conditions
-
- 5.0
V cathode to anode
- 0.6 -
V IF = 100µA, anode to cathode at TA = 25°C
- - 100 µA anode to cathode
- -2.2 - mV/°C anode to cathode
Doc.# DSFP-HV257
D070813
Supertex inc.
5 www.supertex.com
5 Page 
Pad Coordinates
Chip size: 17160μm x 5830μm
Center of die is (0,0)
Pad Name X (μm)
VPP
HVOUT0
HVOUT1
HVOUT2
HVOUT3
HVOUT4
HVOUT5
HVOUT6
HVOUT7
HVOUT8
HVOUT9
HVOUT10
HVOUT11
HVOUT12
HVOUT13
HVOUT14
HVOUT15
HVOUT16
HVOUT17
HVOUT18
HVOUT19
HVOUT20
HVOUT21
HVOUT22
HVOUT23
HVOUT24
HVOUT25
HVOUT26
HVOUT27
HVOUT28
HVOUT29
-8338.5
-7895.0
7448.5
-7001.5
-6554.5
-6107.5
-5660.5
-5213.5
-4776.5
-4319.5
-3872.5
-3425.5
-2978.5
-2513.5
-2084.5
-1637.5
-1190.5
-743.5
-296.5
150.0
597.5
1044.5
1491.5
1938.5
2385.5
2832.5
3279.5
3726.5
4173.5
4620.5
5067.5
Y (μm)
2708.5
2305.5
2305.5
2305.5
2305.5
2305.5
2305.5
2305.5
2305.5
2305.5
2305.5
2305.5
2305.5
2305.5
2305.5
2305.5
2305.5
2305.5
2305.5
2305.5
2305.5
2305.5
2305.5
2305.5
2305.5
2305.5
2305.5
2305.5
2305.5
2305.5
2305.5
Pad Name
HVOUT30
HVOUT31
VPP
BYP-VPP
RSOURCE
RSINK
CATHODE
ANODE
AVNN
BYP-AVDD
BYP-AVNN
AVDD
VSIG
AGND
DVNN
DVDD
DGND
A4
A3
A2
A1
A0
EN
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
X (μm)
5514.5
5961.5
6659.0
7045.0
7489.0
7969.0
8366.0
8366.0
8047.0
8047.0
8047.0
8047.0
8047.0
8047.0
8066.5
8066.5
7867.0
7723.0
7319.0
6913.0
6508.5
6103.5
5698.0
5043.5
4638.5
4233.5
3828.5
3423.5
3018.5
2613.5
2208.5
Y (μm)
2305.5
2305.5
2709.0
2709.0
2709.0
2709.0
2709.0
2199.0
425.0
125.5
-135.5
-704.5
-1072.5
-1424.5
-1590.0
-1958.5
-2192.0
-2684.0
-2684.0
-2684.0
-2684.0
-2684.0
-2684.0
-2686.0
-2686.0
-2686.0
-2686.0
-2686.0
-2686.0
-2686.0
-2686.0
HV257
Pad Name
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
DVDD
DVNN
AGND
AVDD
AVNN
AGND
X (μm)
1803.5
1398.5
993.5
588.5
183.5
-221.5
-626.5
-1031.5
-1436.5
-2412.0
-2817.0
-3222.0
-3627.0
-4032.0
-4437.0
-4842.0
-5247.0
-5652.0
-6052.0
-6462.0
-6867.0
-7272.0
-7677.0
-8082.0
-8373.0
-8373.0
-8367.0
-8387.0
-8338.5
-8341.0
Y (μm)
-2686.0
-2686.0
-2686.0
-2686.0
-2686.0
-2686.0
-2686.0
-2686.0
-2686.0
-2686.0
-2686.0
-2686.0
-2686.0
-2686.0
-2686.0
-2686.0
-2686.0
-2686.0
-2686.0
-2686.0
-2686.0
-2686.0
-2686.0
-2686.0
-2250.5
-1949.0
-1561.0
-1143.0
577.5
916.5
Doc.# DSFP-HV257
D070813
Supertex inc.
11 www.supertex.com
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet HV257FG-G.PDF ] | |
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