AS1504 datasheet(1/17 Pages) AMSCO

tên linh kiện	AS1504

Giải thích chi tiết về linh kiện	Octal 8-Bit Programmable Low-Power DACs with Shutdown and Mid-Scale Reset

PDF	17 Pages

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nhà sản xuất	AMSCO [ams AG]

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AS1504, AS1505

Octa l 8-Bit Programmable Low-Power DACs with

Shutdown and Mid-Scale Reset

austriamicrosystems

Dat a Sh eet

www.austriamicrosystems.com

Revision 1.0

1 - 17

1 General Description

The AS1504/AS1505 are low-power (5µA @ 5V) individ-

ually programmable 8-channel, 8-bit resolution digital-to-

analog converters. All eight DACs share a common ref-

erence-voltage input making them ideal for applications

where adjustments start at a nominal voltage.

The devices feature a low-power shutdown reference

input current (5µA) that enables the devices to maintain

individual DAC latch settings during shutdown until nor-

mal operation is resumed.

The devices are controlled via a standard 3-wire serial

interface. Data is shifted into the DACs via the internal

serial-to-parallel shift register.

The AS1504/AS1505 are available in a 16-pin SOIC-150

package.

Figure 1. Block Diagram

2 Key Features

!

8 Individually-Controlled DACs

!

Replaces 8 Potentiometers

!

Standard 3-Wire Serial Interface

!

Single-Supply Operation: +3 to +5V

!

Mid-Scale Reset Pin (AS1504)

!

Separate VREFL Range Setting (AS1505)

!

Shutdown Mode:

≤25µW (IDD and IREF)

!

Power-On Reset

!

16-pin SOIC-150 Package

3 Applications

The devices are ideal for video amplifier gain control,

video equipment voltage-controlled frequencies and

bandwidths, CRT display geometric corrections and

automatic adjustments, or any other space-limited DAC

application with low power-consumption requirements.

Table 1. Standard Products

Model

Functionality

AS1504

Mid-Scale Reset Pin

AS1505

Separate VREFL Range Settings

DAC

Select

DAC1

GND

VDD

SDI

CLK

CSN

AS1504 Only

SHDNN

VREFH

VREFL

VOUT

VREFL

VREFH

OUT1

DAC8

VREFH

VREFL

VOUT

OUT8

Address

11-Bit

Serial Latch

CK

RSN

D

AS1504/

AS1505

8

8-Bit

Latch

CK

RSN

1

8

8-Bit

Latch

CK

RSN

3

8

AS1505 Only

RSN

Số phần tương tự - AS1504

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Mô tả tương tự - AS1504

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