AS1545 datasheet(1/34 Pages) AMSCO

부품명	AS1545

상세설명	Dual, 12-Bit, 1MSPS, SAR ADC

PDF	34 Pages

Scroll/Zoom	100%

제조업체	AMSCO [ams AG]

홈페이지	http://www.ams.com

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1 / 34 page

AS1545

Dual, 12-Bit, 1MSPS, SAR ADC

Dat a Sh eet

www.austriamicrosystems.com

Revision 1.00

1 - 34

1 General Description

The AS1545 is a dual, 12-bit, 6-channel, 1 MSPS, high

speed, successive approximation (SAR) analog-to-

digital converters (ADCs). The AS1545 is designed to

operate with a single +2.7V to +5.25V supply and a

sampling rate of up to 1 MSPS.

The device contains two ADCs, each preceded by a 6-

channel multiplexer and a high-bandwidth track/hold

amplifier. Data access is made via standard control

inputs in support of wide range of microprocessors and

DSPs.

The device requires very low supply-current at the

1MSPS maximum sampling speed, and features flexible

power-down modes to reduce power consumption at

slower throughput rate.

The AS1545 contains an internal 2.5V reference and

integrated reference buffer that can be over driven when

an external reference is required.

Superior AC characteristics, low power consumption,

and highly reliable packaging makes the AS1545 perfect

for portable battery-powered remote sensors and data-

acquisition devices.

The AS1545 is available in a 32-lead TQFN package.

Figure 1. Block Diagram

2 Key Features

!

Sampling Rate: 1MSPS per ADC

!

Dual 12-bit serial interface

!

Software Configurable Analog Input Types:

- 12-Channel Single-Ended

- 6-Channel Pseudo-Differential

- 6-Channel Fully Differential

!

Internal +2.5V Reference or External: 1V to VDD

!

Rail to Rail Common Mode Input Range

!

Low-Power Consumption

- 15mW max. at 1MSPS with 2.7V supplies

- 37mW max. at 1MSPS with 5.25V supplies

!

Dual conversion with read at 20 MHz SCLK

!

Single-Supply Operation: +2.7V to +5.25V

!

Motor Control Registers: Difference of Inputs,

Quadrature Signal Phases, Direction and Step

Down Counter

!

32-lead TQFN Package

3 Applications

The device is ideal for motor control like encoder feed-

back or current sense, motion control such as robotics,

sonar, or for any other radio frequency identification.

BIN 1

BIN 2

BIN 3

BIN 4

BIN 5

AIN 0

AIN 1

AIN 2

AIN 3

AIN 4

AIN 5

BIN 0

Control Logic

and

System Control

Registers

12-Bit

SAR and A/D

Conversion

Control

REF_SELECT

12-Bit

SAR and A/D

Conversion

Control

BUF

T/H

MUX

REF

MUX

OutPut

Drivers

OutPut

Drivers

REFA

AVDD

DVDD

SCLK

CSN

RANGE

DOUTA

SGL/DIFF

A0

A1

A2

VDRIVE

DOUTB

DGND

REFB

AGND

System

Control

Registers

유사한 부품 번호 - AS1545

제조업체	부품명	데이터시트	상세설명
ams AG	AS1545-BQFT	1Mb / 34P	Dual, 12-Bit, 1MSPS, SAR ADC
ams AG	AS1545	1Mb / 34P	Dual, 12-Bit, 1MSPS, SAR ADC

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Analog Devices	AD7298	1Mb / 18P	8-Channel, 1MSPS, 12-Bit SAR ADC with Temperature Sensor Rev. PrA
ams AG	AS1545	1Mb / 34P	Dual, 12-Bit, 1MSPS, SAR ADC
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