Datasheet > LTC6268

LTC6268

更新时间： 2024-09-26 01:16:27

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
6页	1170K
描述
3-Channel SOT-23 Transimpedance Amplifier

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LTC6268 数据手册

DEMO MANUAL DC2414A

LTC6268 and LTC6268-10

3-Channel SOT-23

Transimpedance Amplifier

Description

Demonstration Circuit 2414A has layouts for three chan-

nels of SOT-23 transimpedance amplifiers. Each of the

three layouts applies different techniques achieving

for any photodiode pinout. The reverse bias voltage for

the photodiode can be applied at a V turret, or can be

–

taken from V or V through jumper JP4. The V traces

various parasitic feedback capacitances (C ). The upper

were spaced according to IPC2221 for 150V working volt-

age, so high voltage APDs can be applied. Take caution

when working with high voltages to avoid contact with

any part of the VBB trace. Because of the many possible

varieties of population, the board is stocked as a bare

unpopulated board.

channel, U3, assumes a low Transimpedance gain, has

a parasitic C of 0.1pF, and provides a footprint for an

additional component C in an 0402 footprint (C29). The

lowerchannel,U1,assumeshightransimpedancegainand

was laid out to minimize C , achieving approximately 7fF,

although the real situation is more complex. The middle

channel, U2, assumes a middle case. The outputs of the

circuit are laid out for SMA edge connectors. The inputs

consist of six pads per channel along the edge where a

through-hole photodiode can be mounted, with provision

Design files for this circuit board are available at

http://www.linear.com/demo/DC2414A

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear

Technology Corporation. All other trademarks are the property of their respective owners.

BoarD photo

Figure 1. Topside Bare PCB DC2414A, for SOT-23 LTC^®6268 and LTC6268-10 Op Amps

dc2414af

12 3 4 5 6

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