AS1543 datasheet(1/29 Pages) AMSCO

部件名	AS1543

功能描述	8/4-Channel, 1 Msps, 12-Bit ADC with Sequencer

PDF	29 Pages

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制造商	AMSCO [ams AG]

网页	http://www.ams.com

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AS1543/44

8/4-Channel, 1 Msps , 12-Bit ADC with Sequencer

Dat a Sh eet

www.austriamicrosystems.com

Revision 1.00

1 - 29

1 General Description

The AS1543/44 is a 12-bit high-speed, low-power, 8/4-

channel, 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-

bandwidth track-and-hold amplifier that can handle input

frequencies in excess of 1 MHz.

The AS1543 features 8 single-ended or 4 fully differen-

tial analog inputs while the AS1544 offers 4 single-

ended or 2 fully differential analog inputs. Both include 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 control the conversion).

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.

The AS1543/44 uses advanced design techniques to

achieve very low power dissipation at high throughput

rates. At maximum throughput rates, the AS1543/44

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

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.

The device is available in a TQFN(4x4)-20 pin package.

Figure 1. Typical Application

2 Key Features

!

Single Supply Operation with VDRIVE Function:

2.7 to 5.25V

!

Fast Throughput Rate: 1 Msps

!

Sequencer & Channel Counter

!

Software-Configurable Analog Input Types:

- 8/4-Channel Single-Ended

- 4/2-Channel Fully-Differential

!

Software-Configurable Input Range

!

Low Power Consumption at Max Throughput Rates:

- 10.1mW @ 1Msps (3.6V Supply)

- 18.4mW @ 1Msps (5.25V Supply)

!

Shutdown Mode Current: 0.5µA

!

Flexible Power/Serial Clock Speed Management

!

Wide Input Bandwidth: 71dB SNR @ 50 kHz Input

Frequency

!

No Pipeline Delays

!

High Speed SPI/QSPI/Microwire/DSP Interface

!

TQFN(4x4)-20 Package

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.

SCLK

AS1543

REFIN

CSN

VIN0:7

DOUT

AGND

Multiplexer

8

Track/

Hold

VDD

Sequencer

Control

Logic

12-Bit

ADC

DIN

VDRIVE

GND

DGND

类似零件编号 - AS1543

制造商	部件名	数据表	功能描述
ams AG	AS1540-BQFT	749Kb / 20P	8/4-Channel, 12-Bit I2C Analog-to-Digital Converter
	AS1541	750Kb / 20P	8/4-Channel, 10-Bit I짼C Analog-to-Digital Converter
	AS1541	746Kb / 20P	8/4-Channel, 10-Bit I2C Analog-to-Digital Converter
	AS1541-BQFT	746Kb / 20P	8/4-Channel, 10-Bit I2C Analog-to-Digital Converter
	AS1541-BTST	750Kb / 20P	8/4-Channel, 10-Bit I짼C Analog-to-Digital Converter

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类似说明 - AS1543

制造商	部件名	数据表	功能描述
Analog Devices	AD7490	2Mb / 24P	16-Channel, 1 MSPS, 12-Bit ADC with Sequencer in 28-Lead TSSOP 10/02-Data Sheet changed from REV. 0 to REV. A.
Analog Devices	AD7904	411Kb / 24P	4-Channel, 1 MSPS, 8-/10-/12-Bit ADCs with Sequencer in 16-Lead TSSOP REV.0
ams AG	AS1542	78Kb / 2P	16-Channel, 1 Msps, 12-Bit ADC with Sequencer
Texas Instruments	ADS8028	904Kb / 34P	12-Bit, 1-MSPS, 8-Channel, SAR ADC
Analog Devices	AD7490	673Kb / 28P	16-Channel, 1 MSPS, 12-Bit ADC with Sequencer in 28-Lead TSSOP REV. D
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