LTC1402 Serial 12-Bit, 2.2Msps Sampling ADC with Shutdown

The LTC®1402 is a 12-bit, 2.2Msps sampling A/D converter. This high performance device includes a high dynamic range sample-and-hold and a precision reference. It operates from a single 5V supply or dual ±5V supplies and draws only 90mW from 5V. The versatile differential input offers a unipolar range of 4.096V and a bipolar range of ±2.048V for dual supply systems where high performance op amps perform best, eliminating the need for special translation circuitry. The high common mode rejection allows users to eliminate ground loops and common mode noise by measuring signals differentially from the source. Outstanding AC performance includes 72dB S/(N + D) and –93dB SFDR at the Nyquist input frequency of 1.1MHz with dual ±5V supplies and –84dB SFDR with a single 5V supply. The LTC1402 has two power saving modes: Nap and Sleep. Nap mode consumes only 15mW of power and can wake up and convert immediately. In Sleep mode, it typically consumes 10µW of power. Upon power-up from Sleep mode, a reference ready (REFRDY) signal is available in the serial data word to indicate that the reference has settled and the chip is ready to convert. The 3-wire serial port allows compact and efficient data transfer to a wide range of microprocessors, microcontrollers and DSPs. A digital output driver power supply pin allows direct connection to 3V or lower logic

产品特点 Features Sample Rate: 2.2Msps 72dB S/(N + D) and �89dB THD at Nyquist Power Dissipation: 90mW (Typ) 80MHz Full Power Bandwidth Sampling No Missing Codes over Temperature Available in 16-Pin Narrow SSOP Package Single Supply 5V or ±5V Operation Nap Mode with Instant Wake-Up: 15mW Sleep Mode: 10µW True Differential Inputs Reject Common Mode Noise Input Range (1mV/LSB): 0V to 4.096V or ±2.048V Internal Reference Can Be Overdriven Externally 3-Wire Interface to DSPs and Processors (SPI and MICROWIRE™ Compatible) 封装	应用 Telecommunications High Speed Data and Signal Acquisition Digitally Multiplexed Data Acquisition Systems Digital Radio Receivers Spectrum Analysis Low Power and Battery-Operated Systems Handheld or Portable Instruments Imaging Systems 典型应用图参数

产品特点 Features

Sample Rate: 2.2Msps
72dB S/(N + D) and �89dB THD at Nyquist
Power Dissipation: 90mW (Typ)
80MHz Full Power Bandwidth Sampling
No Missing Codes over Temperature
Available in 16-Pin Narrow SSOP Package
Single Supply 5V or ±5V Operation
Nap Mode with Instant Wake-Up: 15mW
Sleep Mode: 10µW
True Differential Inputs Reject Common Mode Noise
Input Range (1mV/LSB): 0V to 4.096V or ±2.048V
Internal Reference Can Be Overdriven Externally
3-Wire Interface to DSPs and Processors (SPI and
MICROWIRE™ Compatible)

封装

应用

Telecommunications
High Speed Data and Signal Acquisition
Digitally Multiplexed Data Acquisition Systems
Digital Radio Receivers
Spectrum Analysis
Low Power and Battery-Operated Systems
Handheld or Portable Instruments
Imaging Systems

典型应用图

参数

LTC1402 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) *
LTC1402CGN	SSOP	16	C	$8.30	$6.95
LTC1402CGN#PBF	SSOP	16	C	$8.30	$6.95
LTC1402CGN#TR	SSOP	16	C		$7.01
LTC1402CGN#TRPBF	SSOP	16	C		$7.01
LTC1402IGN	SSOP	16	I	$9.50	$7.95
LTC1402IGN#PBF	SSOP	16	I	$9.50	$7.95
LTC1402IGN#TR	SSOP	16	I		$8.01
LTC1402IGN#TRPBF	SSOP	16	I		$8.01

LTC1402 数据手册及相关资料下载

数据手册 : LTC1402 - Serial 12-Bit, 2.2Msps Sampling ADC with Shutdown .PDF
应用指南 : AN62 - Data Acquisition Circuit Collection.PDF
可靠性数据 : R380 Reliability Data .PDF
产品选型卡 : Differential Amplifiers/High Speed ADC Drivers .PDF
LT Journal: Feb 2000 Tiny 12-Bit ADC Delivers 2.2Msps Through 3-Wire Serial Interface .PDF
LT Journal: Jan 2000 1- and 2-Channel, No Latency Delta Sigma, 24-Bit ADCs Easily Digitize a Variety of Sensors..PDF