LSP2916

Features:

 16 amplifier channels available in one package.
  Outputs from 0 V to –298 V per channel.
  Programmable output current limit (50 µA to 300 µA)
  Fixed gain set by internal resistors. (The fixed gain for version A is –32 V/V, and –66 V/V for version B.)
  Minimal external components.


Application

LSP2916 is recommended for MEMS optical systems. It features programmable current limit while the output can swing up to –298 V. With all the feedback resistors inside the chip, there is no more need for these resis- tors in the external circuit.


Pinout




Specifications

Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess of those given in the operational sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability.

Parameter	Min	Typ	Max	Unit
Power Supply: VHN VLP	0 4.5	-160.0 5.0	-298.0 5.5	VV
Operating Temperature	-5	26	85	°C
Storage Temperature	-40	-	85	°C
Ambient Temperature	-5	25	70	°C

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 µA, 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 MΩ and RIN = 250 kΩ; and for version B, RF = 8.25 MΩ and RIN = 125 kΩ. So LSP2916A has the fixed gain of 32 V/V and LSP2916B has the fixed gain of 66 V/V.

It 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.