Datasheet > LSP2908

LSP2908

更新时间： 2024-10-17 22:30:59

品牌	Logo	应用领域
杰尔 - AGERE		驱动器接口集成电路高压
页数	文件大小	规格书
8页	157K
描述
8-Channel, High-Voltage Driver

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LSP2908 数据手册

Advance Data Sheet

September 2001

LSP2908

8-Channel, High-Voltage Driver

condition that |VHP – VHN| ≤ 300 V. Voltage gain is

set by external resistors. Each amplifier can output

up to 500 µA, ideal for deflection and control of

optical MEMS mirrors. Output current limit is

programmed by an external resistor. Additionally,

careful attention is paid to minimizing offset drift over

temperature.

Features

^IEight amplifier channels in one package

^IOutputs from –298 V to +160 V per channel

^IProgrammable output current limit (100 µA to

500 µA)

^IVariable voltage gain set by external resistors

The LSP2908 requires one negative high-voltage

power supply (VHN) and one positive low-voltage

power supply (VLP). For positive output voltage appli-

cations, one positive high-voltage power supply

(VHP) is required. Corresponding to the eight chan-

nels are the eight inverting input pins, –INx

Applications

^IOptical crosspoint switches

^IOptical microelectromechanical systems (MEMS)

(x = 1, 2, . . . , 8), and the corresponding eight output

pins, OUTPUTx (x = 1, 2, . . . , 8). Figure 1 is the

internal functional block diagram.

components

Description

+IN is the noninverting input for all eight amplifiers.

All the amplifiers share the same noninverting input.

+IN should be connected to GND. The IBIAS pin will

set the current limit ((100 µA to 500 µA) ± 20%) for

the amplifiers by connecting it to an external resistor

Rib. The LSP2908 is available in a leaded surface-

mount 44-pin MQFP package.

The LSP2908 eight-channel, high-voltage (HV) driver

is targeted for microoptomechanical systems. Each

device contains eight high-voltage amplifiers with an

output voltage range of –298 V to +160 V on the

LSP2908

–

–IN1

OUTPUT 1

–

–IN8

+IN

OUTPUT 8

1682.b(F)

Figure 1. LSP2908 Internal Block Diagram

12 3 4 5 6 7 8

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