LTC1851 8-Channel, 10-Bit/12-Bit, 1.25Msps Sampling ADCs

The 10-bit LTC®1850 and 12-bit LTC1851 are complete 8-channel data acquisition systems. They include a flexible 8-channel multiplexer, a 1.25Msps successive approximation analog-to-digital converter with sample-and-hold, an internal 2.5V reference and reference buffer amplifier, and a parallel output interface. The multiplexer can be configured for single-ended or differential inputs, two gain ranges and unipolar or bipolar operation.

The ADCs have a scan mode that will repeatedly cycle through all 8 multiplexer channels and can also be programmed with a sequence of up to 16 addresses and configurations that can be scanned in succession. The sequence memory can also be read back. The reference and buffer amplifier provide pin strappable ranges of 4.096V, 2.5V and 2.048V. The parallel output includes the 10-bit or 12-bit conversion result plus the 4-bit multiplexer address. The digital outputs are powered from a separate supply allowing for easy interface to 3V digital logic. Typical power consumption is 40mW at 1.25Msps from a single 5V supply

产品特点 Features Flexible 8-Channel Multiplexer Single-Ended or Differential Inputs Two Gain Ranges Plus Unipolar and Bipolar Operation 1.25Msps Sampling Rate Single 5V Supply and 40mW Power Dissipation Scan Mode and Programmable Sequencer Pin Compatible 10-Bit LTC1850 and 12-Bit LTC1851 True Differential Inputs Reject Common Mode Noise Internal 2.5V Reference Parallel Output Includes MUX Address Easy Interface to 3V Logic Nap and Sleep Shutdown Modes 参数	应用 High Speed Data Acquisition Test and Measurement Imaging Systems Telecommunications Industrial Process Control Spectrum Analysis 典型应用图

产品特点 Features

Flexible 8-Channel Multiplexer
Single-Ended or Differential Inputs
Two Gain Ranges Plus Unipolar and Bipolar Operation
1.25Msps Sampling Rate
Single 5V Supply and 40mW Power Dissipation
Scan Mode and Programmable Sequencer
Pin Compatible 10-Bit LTC1850 and 12-Bit LTC1851
True Differential Inputs Reject Common Mode Noise
Internal 2.5V Reference
Parallel Output Includes MUX Address
Easy Interface to 3V Logic
Nap and Sleep Shutdown Modes

参数

应用

High Speed Data Acquisition
Test and Measurement
Imaging Systems
Telecommunications
Industrial Process Control
Spectrum Analysis

典型应用图

LTC1851 订购信息和价格参考Package Variations and Pricing

器件型号	封装	引脚	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量) *
LTC1851CFW	SSOP	48	C	$9.65	$6.95
LTC1851CFW#PBF	SSOP	48	C	$9.65	$6.95
LTC1851CFW#TR	SSOP	48	C		$7.07
LTC1851CFW#TRPBF	SSOP	48	C		$7.07
LTC1851IFW	SSOP	48	I	$11.05	$7.95
LTC1851IFW#PBF	SSOP	48	I	$11.05	$7.95
LTC1851IFW#TR	SSOP	48	I		$8.07
LTC1851IFW#TRPBF	SSOP	48	I		$8.07

LTC1851 数据手册及相关资料下载

数据手册(英文) : LTC1850/LTC1851 - 8-Channel, 10-Bit/12-Bit, 1.25Msps Sampling ADCs.PDF
应用指南 (英文) : AN87 - linear Technology Magazine Circuit Collection, Volume V: Data Conversion, Interface and Signal Conditioning Products.PDF
设计要点 (英文) : DN274 - 12-Bit ADC with Sequencer Simplifies Multiple-Input Applications.PDF
可靠性数据 : R107 Reliability Data .PDF
LT Journal : Dec 2001 12-Bit, 1.25Msps ADC with 8-Channel Programmable MUX Offers Incredible Versatility.PDF