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

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

LTC1402是Linear公司的一款通用型 SAR ADC产品，LTC1402是Serial 12-Bit, 2.2Msps Sampling ADC with Shutdown，本站介绍了LTC1402的封装应用图解、特点和优点、功能等，并给出了与LTC1402相关的凌力尔特元器件型号供参考。

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

LTC1402 - Serial 12-Bit, 2.2Msps Sampling ADC with Shutdown - Linear Technology（凌力尔特）

功能描述

The LTC1402 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.

特点

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)

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

以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格（美元）

器件型号	封装	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