EVAL-AD5780SDZ データシートの表示（PDF） - Analog Devices

部品番号

コンポーネント説明

メーカー

EVAL-AD5780SDZ

System Ready, 18-Bit ±1 LSB INL, Voltage Output DAC

Analog Devices 

Data Sheet

System Ready, 18-Bit ±1 LSB INL,

Voltage Output DAC

AD5780

FEATURES

True 18-bit voltage output DAC, ±1 LSB INL

8 nV/√Hz output noise spectral density

0.025 LSB long-term linearity error stability

±0.018 ppm/°C gain error temperature coefficient

2.5 µs output voltage settling time

3.5 nV-sec midscale glitch impulse

Integrated precision reference buffers

Operating temperature range: −40°C to +125°C

4 mm × 5 mm LFCSP package

Wide power supply range of up to ±16.5 V

35 MHz Schmitt triggered digital interface

1.8 V-compatible digital interface

APPLICATIONS

Medical instrumentation

Test and measurement

Industrial control

Scientific and aerospace instrumentation

Data acquisition systems

Digital gain and offset adjustment

Power supply control

GENERAL DESCRIPTION

The AD57801 is a true 18-bit, unbuffered voltage output digital-

to-analog converter (DAC) that operates from a bipolar supply

of up to 33 V. The AD5780 accepts a positive reference input

range of 5 V to VDD − 2.5 V and a negative reference input range

of VSS + 2.5 V to 0 V. Both reference inputs are buffered on chip

and external buffers are not required. The AD5780 offers a

relative accuracy specification of ±1 LSB maximum range, and

operation is guaranteed monotonic with a ±1 LSB differential

nonlinearity (DNL) maximum range specification.

The part uses a versatile 3-wire serial interface that operates at

clock rates of up to 35 MHz and is compatible with standard

serial peripheral interface (SPI), QSPI™, MICROWIRE™, and

DSP interface standards. The part incorporates a power-on

reset circuit that ensures that the DAC output powers up to 0 V

in a known output impedance state and remains in this state

until a valid write to the device takes place. The part provides

an output clamp feature that places the output in a defined load

state.

IOVCC

SDIN

SCLK

SYNC

SDO

LDAC

CLR

RESET

FUNCTIONAL BLOCK DIAGRAM

VCC

VDD

VREFP

AD5780

INPUT

SHIFT

18

REGISTER

AND

CONTROL

LOGIC

DAC 18

REG

18-BIT

DAC

R1 RFB

6.8kΩ 6.8kΩ

A1

RFB

INV

VOUT

6kΩ

POWER-ON RESET

AND CLEAR LOGIC

DGND

VSS

AGND

VREFN

Figure 1.

PRODUCT HIGHLIGHTS

1. True 18-bit accuracy.

2. Wide power supply range of up to ±16.5 V.

3. −40°C to +125°C operating temperature range.

4. Low 8 nV/√Hz noise.

5. Low ±0.018 ppm/°C gain error temperature coefficient.

COMPANION PRODUCTS

Output Amplifier Buffer: AD8675, ADA4898-1, ADA4004-1

External Reference: ADR445, ADR4550

DC-to-DC Design Tool: ADIsimPower™

Additional companion products on the AD5780 product page.

Table 1. Related Devices

Part No.

Description

AD5790

20-bit, 2 LSB accurate DAC

AD5791

20-bit, 1 ppm accurate DAC

AD5781

18-bit, 0.5 LSB accurate DAC

AD5541A/AD5542A 16-bit, 1 LSB accurate 5 V DAC

AD5760

16-bit, 0.5 LSB accurate DAC

1 Protected by U.S. Patent No. 7,884,747 and 8,089,380.

Rev. F

Document Feedback

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 that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registered trademarks are the property of their respective owners.

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

Tel: 781.329.4700 ©2011–2018 Analog Devices, Inc. All rights reserved.

Technical Support

www.analog.com

Share Link: