Datasheet > HT82V39A

HT82V39A

更新时间： 2024-05-24 11:20:00

品牌	Logo	应用领域
台湾合泰/盛群 - HOLTEK		/
页数	文件大小	规格书
17页	564K
描述
3-Channel, 16-Bit, 40MSPS CIS Analog Signal Processor with LED Driver

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HT82V39A 数据手册

HT82V39A

3-Channel, 16-Bit, 40MSPS

CIS Analog Signal Processor with LED Driver

Features

General Description

• Operating voltage: 3.3V (typ.)

• 16-bit 40MSPS A/D converter

• 3-channel operation up to 40MSPS

• 2-channel operation up to 40MSPS

• 1-channel operation up to 20MSPS

• 1~5.85x programmable gain

The HT82V39A is a complete analog signal processor

for CIS imaging applications. It features a 3-channel

architecture designed to sample and condition the

outputs of CIS (Contact Image Sensor) array. Each

channel consists of a Sample and Hold Amplifier,

Programmable Gain Amplifier (PGA) and 9-bit

oﬀset correction Digital to Analog Converter (DAC),

multiplexed to a high performance 16-bit A/D

converter of 40MHz.

• ±250mV programmable oﬀset

• Input clamp circuitry

The PGA and offset DAC are programmed

independently allowing unique values of gain and

oﬀset for the 3-channel analog inputs.

• Internal voltage reference

• Multiplexed byte-wide output (8+8 format)

• 4-bit multiplexed nibble mode

• Programmable 3-wire serial interface

• 3.3V digital I/O compatibility

The 16-bit digital output is multiplexed into two

diﬀerent output formats. First, an 8-bit output word is

accessed using two read cycles. The second is support

4-bit output word with four read cycles. The internal

registers are programmed through a 3-wire serial

interface, and provide adjustment of the gain, offset

and operating mode.

• Power CMOS: 390mW (typ.)

(Except LED drive current)

• Power-Down Mode: 10μA (max.)

• LED driver operating voltage: 5V (typ.)

• LED drive current: 66mA/CH

The device also includes 3-channel LED drivers that

drive the LED by the anode common in the constant

current. The current to each channel can adjust by the

external resistance and the register setting. It has the

control pins to turn on or oﬀ the LED driver.

• When 3 LED drivers are turned on at the same time,

Total current limitation is 66mA×150%=99mA

• Package type: 40-pin QFN

Applications

• Flatbed document scanners

• Film scanners

• Digital color copiers

• Multifunction peripherals

Rev. 1.00

July 19, 2023

12 3 4 5 6 7...17

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