Datasheet > AS1542

AS1542

更新时间： 2024-11-09 04:06:43

品牌	Logo	应用领域
艾迈斯 - AMSCO		/
页数	文件大小	规格书
2页	78K
描述
16-Channel, 1 Msps, 12-Bit ADC with Sequencer

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中文翻译

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AS1542 数据手册

Product Brief

AS1542

16-Channel, 1 Msps, 12-Bit ADC with Sequencer

1 General Description

2 Key Features

ꢀ

Single Supply Operation with VDRIVE Function:

2.7 to 5.25V

The AS1542 is a 12-bit high-speed, low-power, 16-chan-

nel, successive-approximation ADC that operates from

a single 2.7 to 5.25V supply. The device features high

throughput rates (1Msps) and a low-noise, wide-band-

width track-and-hold amplifier that can handle input fre-

quencies in excess of 1 MHz.

ꢀ

Fast Throughput Rate: 1 Msps

Sequencer & Channel Counter

Software-Configurable Analog Input Types:

- 16-Channel Single-Ended

- 8-Channel Fully-Differential

The AS1542 features 16 single-ended or 8 fully differen-

tial analog inputs with a channel sequencer to allow a

programmed selection of channels to be converted

sequentially. The conversion time is determined by the

SCLK frequency (also used as the master clock to con-

trol the conversion).

ꢀ

Software-Configurable Input Range

Low Power Consumption at Max Throughput Rates:

- 10.1mW @ 1Msps (3.6V Supply)

- 18.4mW @ 1Msps (5.25V Supply)

The conversion process and data acquisition are con-

trolled using a chip select pin and a serial clock signal,

allowing the device to easily interface with microproces-

sors or DSPs. The input signal is sampled on the falling

edge of CSN and conversion is also initiated at this

point. There are no pipeline delays associated with the

device.

ꢀ

Shutdown Mode Current: 0.5µA

Flexible Power/Serial Clock Speed Management

Wide Input Bandwidth: 71dB SNR @ 50 kHz Input

Frequency

The AS1542 uses advanced design techniques to

achieve very low power dissipation at high throughput

rates. At maximum throughput rates, the AS1542 con-

sumes just 2.8mA (@3.6V), and 3.5mA (@5.25V).

ꢀ

No Pipeline Delays

High Speed SPI/QSPI/Microwire/DSP Interface

TSSOP-28 Package

By using internal control register, single-ended or fully-

differential conversion mode with different input ranges

can be used with either straight binary or twos comple-

ment output coding.

3 Applications

The devices are ideal for remote sensors, data-acquisi-

tion and data-logging devices, pen-digitizers, process

control, or any other space-limited A/D application with

low power-consumption requirements.

The device is available in a TSSOP-28 pin package.

Figure 1. Typical Application

VDD

REFIN

DGND

12-Bit

ADC

Track/

Hold

Multiplexer

Sequencer

VIN0:15

AGND

AS1542

SCLK

DOUT

DIN

Control

Logic

GND

CSN

VDRIVE

www.austriamicrosystems.com

Revision 1.00

1 - 2

中文翻译

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