Datasheet > AD7846BD

AD7846BD

更新时间： 2024-09-30 20:06:23

品牌	Logo	应用领域
亚德诺 - ADI		输入元件转换器
页数	文件大小	规格书
16页	611K
描述
IC PARALLEL, WORD INPUT LOADING, 16-BIT DAC, CDIP28, HERMETIC SEALED, SIDE BRAZED, CERAMIC, DIP-28, Digital to Analog Converter

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AD7846BD 数据手册

LC²MOS

16-Bit Voltage Output DAC

AD7846

FEATURES

FUNCTIONAL BLOCK DIAGRAM

16-Bit Monotonicity over Temperature

؎2 LSBs Integral Linearity Error

Microprocessor Compatible with Readback Capability

Unipolar or Bipolar Output

Multiplying Capability

Low Power (100 mW Typical)

REF +

AD7846

SEGMENT

SWITCH

MATRIX

OUT

12-BIT DAC

REF –

DAC LATCH

R/ W

LDAC

CLR

CONTROL

LOGIC

I/O LATCH

DB15 DB0

DGND

GENERAL DESCRIPTION

PRODUCT HIGHLIGHTS

The AD7846 is a 16-bit DAC constructed with Analog Devices’

LC²MOS process. It has V_REF+and V_REF–reference inputs and

an on-chip output amplifier. These can be configured to give a

unipolar output range (0 V to +5 V, 0 V to +10 V) or bipolar

output ranges ( 5 V, 10 V).

1. 16-Bit Monotonicity

The guaranteed 16-bit monotonicity over temperature makes

the AD7846 ideal for closed-loop applications.

2. Readback

The ability to read back the DAC register contents minimizes

software routines when the AD7846 is used in ATE systems.

The DAC uses a segmented architecture. The 4 MSBs in the

DAC latch select one of the segments in a 16-resistor string.

Both taps of the segment are buffered by amplifiers and fed to a

12-bit DAC, which provides a further 12 bits of resolution. This

architecture ensures 16-bit monotonicity. Excellent integral

linearity results from tight matching between the input offset

voltages of the two buffer amplifiers.

3. Power Dissipation

Power dissipation of 100 mW makes the AD7846 the lowest

power, high accuracy DAC on the market.

In addition to the excellent accuracy specifications, the AD7846

also offers a comprehensive microprocessor interface. There are

16 data I/O pins, plus control lines (CS, R/W, LDAC and CLR).

R/W and CS allow writing to and reading from the I/O latch.

This is the readback function which is useful in ATE applica-

tions. LDAC allows simultaneous updating of DACs in a multi-

DAC system and the CLR line will reset the contents of the

DAC latch to 00 . . . 000 or 10 . . . 000 depending on the state

of R/W. This means that the DAC output can be reset to 0 V in

both the unipolar and bipolar configurations.

The AD7846 is available in 28-lead plastic, ceramic, and PLCC

packages.

REV. E

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, nor for any infringements of patents or other rights of third parties

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

Fax: 781/326-8703

World Wide Web Site: http://www.analog.com

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与AD7846BD相关器件

型号	品牌	获取价格	描述	数据表
AD7846BP	ADI	获取价格	LC2MOS 16-Bit Voltage Output DAC
AD7846BPZ	ADI	获取价格	LC2MOS 16-Bit Voltage Output DAC
AD7846BQ	ETC	获取价格	16-Bit Digital-to-Analog Converter
AD7846JN	ADI	获取价格	LC2MOS 16-Bit Voltage Output DAC
AD7846JNZ	ADI	获取价格	LC2MOS 16-Bit Voltage Output DAC
AD7846JP	ADI	获取价格	LC2MOS 16-Bit Voltage Output DAC
AD7846JP-REEL	ADI	获取价格	LC2MOS 16-Bit Voltage Output DAC
AD7846JPZ	ADI	获取价格	LC2MOS 16-Bit Voltage Output DAC
AD7846JPZ-REEL	ADI	获取价格	LC2MOS 16-Bit Voltage Output DAC
AD7846KN	ADI	获取价格	LC2MOS 16-Bit Voltage Output DAC

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