Datasheet > AS1545_1

AS1545_1

更新时间： 2024-01-11 02:39:01

品牌	Logo	应用领域
艾迈斯 - AMSCO		/
页数	文件大小	规格书
34页	1591K
描述
Dual, 12-Bit, 1MSPS, SAR ADC

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AS1545_1 数据手册

Datasheet

AS1545

Dual, 12-Bit, 1MSPS, SAR ADC

1 General Description

2 Key Features

ꢀ

Sampling Rate: 1MSPS per ADC

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.

Dual 12-bit serial interface

Software Configurable Analog Input Types:

- 12-Channel Single-Ended

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.

- 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

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.

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

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

Dual conversion with read at 20 MHz SCLK

ꢀ

The AS1545 contains an internal 2.5V reference and

integrated reference buffer that can be over driven when

an external reference is required.

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

Motor Control Registers: Difference of Inputs,

Quadrature Signal Phases, Direction and Step

Down Counter

Superior AC characteristics, low power consumption,

and highly reliable packaging makes the AS1545 perfect

for portable battery-powered remote sensors and data-

acquisition devices.

ꢀ

32-lead TQFN Package

The AS1545 is available in a 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.

Figure 1. AS1545 - Block Diagram

REF_SELECT

REFA

AVDD

DVDD

REF

BUF

System

Control

Registers

AIN 0

AIN 1

12-Bit

SAR and A/D

Conversion

Control

OutPut

Drivers

AIN 2

AIN 3

T/H

MUX

DOUTA

SCLK

CSN

RANGE

SGL/DIFF

AIN 4

AIN 5

Control Logic

and

System Control

Registers

BIN 0

BIN 1

VDRIVE

12-Bit

SAR and A/D

Conversion

Control

BIN 2

BIN 3

OutPut

Drivers

DOUTB

T/H

MUX

BIN 4

BIN 5

AS1545

BUF

AGND AGND

AGND

DGND

REFB

DGND

www.austriamicrosystems.com

Revision 1.01

1 - 34

12 3 4 5 6 7...34

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