LTC1285是3V Micropower Sampling 12-Bit A/D Converters in SO-8 Packages

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LTC1285 - LTC1285是3V Micropower Sampling 12-Bit A/D Converters in SO-8 Packages

LTC1285是Linear公司的一款通用型 SAR ADC产品，LTC1285是3V Micropower Sampling 12-Bit A/D Converters in SO-8 Packages，本站介绍了LTC1285的封装应用图解、特点和优点、功能等，并给出了与LTC1285相关的凌力尔特元器件型号供参考。

LTC1285 - 3V Micropower Sampling 12-Bit A/D Converters in SO-8 Packages

LTC1285 - 3V Micropower Sampling 12-Bit A/D Converters in SO-8 Packages - Linear Technology（凌力尔特）

功能描述

The LTC?1285/LTC1288 are 3V micropower, 12-bit, successive approximation sampling A/D converters. They typically draw only 160μA of supply current when converting and automatically power down to a typical supply current of 1nA whenever they are not performing conversions. They are packaged in 8-pin SO packages and operate on 3V to 6V supplies.These 12-bit, switched-capacitor, successive approximation ADCs include sample-and-holds. The LTC1285 has a single differential analog input. The LTC1288 offers a software selectable 2-channel MUX.On-chip serial ports allow efficient data transfer to a wide range of microprocessors and microcontrollers over three wires. This, coupled with micropower consumption, makes remote location possible and facilitates transmitting data through isolation barriers.These circuits can be used in ratiometric applications or with an external reference. The high impedance analog inputs and the ability to operate with reduced spans (to 1.5V full scale) allow direct connection to sensors and transducers in many applications, eliminating the need for gain stages.

特点

12-Bit Resolution

8-Pin SO Plastic Package

Low Cost

Low Supply Current: 160µA Typ

Auto Shutdown to 1nA Typ

Guaranteed ±3/4LSB Max DNL

Single Supply 3V to 6V Operation

Differential Inputs (LTC1285)

2-Channel MUX (LTC1288)

On-Chip Sample-and-Hold

100µs Conversion Time

Sampling Rates 7.5ksps (LTC1285) 6.6ksps (LTC1288)

I/O Compatible with SPI, Microwire, etc.

应用

Pen Screen Digitizing

Battery-Operated Systems

Remote Data Acquisition

Isolated Data Acquisition

Battery Monitoring

Temperature Measurement

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)
LTC1285CN8	N-8	C	$7.90	$6.35
LTC1285CN8#PBF	N-8	C	$7.90	$6.35
LTC1285CS8	SO-8	C	$8.35	$6.75
LTC1285CS8#PBF	SO-8	C	$8.35	$6.75
LTC1285CS8#TR	SO-8	C		$6.81
LTC1285CS8#TRPBF	SO-8	C		$6.81
LTC1285IS8	SO-8	I	$10.00	$7.65
LTC1285IS8#PBF	SO-8	I	$10.00	$7.65
LTC1285IS8#TR	SO-8	I		$7.71
LTC1285IS8#TRPBF	SO-8	I		$7.71