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LTC1274 - LTC1274是12-Bit, 10mW, 100ksps ADCs with 1μA Shutdown

LTC1274是LINEAR凌力尔特公司的一款通用型 SAR ADC产品，LTC1274是LTC1274是12-Bit, 10mW, 100ksps ADCs with 1μA Shutdown，本站介绍了LTC1274的封装应用图解、特点和优点、功能等，并给出了与LTC1274相关的LINEAR元器件型号供参考。

LTC1274 - LTC1274是12-Bit, 10mW, 100ksps ADCs with 1μA Shutdown - 通用型 SAR ADC - 数据转换 - 凌力尔特

LTC1274 - 12-Bit, 10mW, 100ksps ADCs with 1μA Shutdown

LTC1274 - 12-Bit, 10mW, 100ksps ADCs with 1μA Shutdown - Linear Technology（凌力尔特）

功能描述

The LTC1274/LTC1277 are 8µs sampling 12-bit A/D converters which draw only 2mA (typ) from single 5V or ±5V supplies. These easy-to-use devices come complete with a 2ms sample-and-hold, a precision reference and an internally trimmed clock. Unipolar and bipolar conversion modes add to the flexibility of the ADCs.

Two power-down modes are available in the LTC1277. In Napmode, the LTC1277 draws only 180µA and the instant wake-up from Nap mode allows the LTC1277 to be powered down even during brief inactive periods. In Sleep mode only 1µA will be drawn. A REFRDY signal is used to show the ADC is ready to sample after waking up from Sleep mode. The LTC1274 also provides the Sleep mode and REFRDY signal.

The A/D converters convert 0V to 4.096V unipolar inputs from a single 5V supply or ±2.048V bipolar inputs from ±5V supplies.

The LTC1274 has a single-ended input and a 12-bit parallel data format. The LTC1277 offers a differential input and a 2-byte read format. The bipolar mode is formatted as 2’s complement for the LTC1274 and offset binary for the LTC1277.

特点

Low Power Dissipation: 10mW

Sample Rate: 100ksps

Samples Inputs Beyond Nyquist, 72dB S/(N D) and 82dB THD at fIN = 100kHz

Single Supply 5V or ±5V Operation

Power Shutdown to 1µA in Sleep Mode

180µA Nap Mode (LTC1277) with Instant Wake-Up

Internal Reference Can Be Overdriven

Internal Synchronized Clock

0V to 4.096V or ±2.048V Input Ranges (1mV/LSB)

24-Lead SOL Package

应用

Battery-Powered Portable Systems

High Speed Data Acquisition for PCs

Digital Signal Processing

Multiplexed Data Acquisition Systems

Audio and Telecom Processing

Spectrum Analysis

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)
LTC1274CSW	SW-24	C	$9.90	$7.60
LTC1274CSW#PBF	SW-24	C	$9.90	$7.60
LTC1274CSW#TR	SW-24	C		$7.70
LTC1274CSW#TRPBF	SW-24	C		$7.70
LTC1274ISW	SW-24	I	$10.80	$8.45
LTC1274ISW#PBF	SW-24	I	$10.80	$8.45
LTC1274ISW#TR	SW-24	I		$8.55
LTC1274ISW#TRPBF	SW-24	I		$8.55

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