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參數(shù)資料
| 型號： | LSP2916BHA |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PQFP64 |
| 封裝： | MQFP-64 |
| 文件頁數(shù)： | 1/10頁 |
| 文件大小： | 201K |
| 代理商： | LSP2916BHA |
Preliminary Data Sheet
July 2001
LSP2916 16-Channel, High-Voltage Driver
Features
I
16 amplifier channels available in one package.
I
Outputs from 0 V to –298 V per channel.
I
Programmable output current limit (50
A to
300
A).
I
Fixed gain set by internal resistors. (The fixed gain
for version A is –32 V/V, and –66 V/V for version
B.)
I
Minimal external components.
Applications
I
Optical crosspoint switches.
I
Optical microelectromechanical systems (MEMS)
components.
Description
This LSP2916 16-channel, high-voltage (HV) driver
is targeted for microoptomechanical systems. Each
device contains 16 high-voltage amplifiers with an
output voltage range of 0 V to –298 V. Internal gain-
setting resistors provide a fixed gain of –32 V/V,
thereby minimizing external component count. Each
amplifier can output up to 300
A, ideal for deflection
and control of optical MEMS mirrors. Output current
limit is programmed by an external resistor.
Additionally, careful attention was paid to minimizing
offset drift and gain variation over temperature. The
internal block diagram is shown in Figure 1. There
are two versions, version A (LSP2916A) and version
B (LSP2916B). For version A, RF = 8 M
and
RIN = 250 k
; and for version B, RF = 8.25 M and
RIN = 125 k
. So LSP2916A has the fixed gain of
–32 V/V and LSP2916B has the fixed gain of
–66 V/V.
The LSP2916 requires one negative high-voltage
power supply (VHN) and one positive 5 V analog
power supply (VLP). Corresponding to the 16
channels, there are 16 negative input voltage pins,
–INx (x = 1, 2, . . .
, 16), and the corresponding 16
output pins, OUTPUTx (x = 1, 2, . . .
, 16).
+IN is the noninverting input for all 16 amplifiers,
which means all the amplifiers share the same
noninverting input. +IN should be connected to GND
for typical applications. IBIAS pin will set the current
limit for the amplifiers by connecting it to an external
resistor. The LSP2916 is available in a leaded
surface-mount 64-pin MQFP package.
Block Diagram
1682(F)
Figure 1. LSP2916 Internal Functional Block
Diagram
RIN
–IN16
+IN
OUTPUT 16
RF
RIN
–IN1
+
–
OUTPUT 1
RF
+
–
LSP2916
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