CN-0229

Circuit Note

Rev. 0 | Page 4 of 6

Table 1. Test Results for All Output Ranges

Range

Current Sense Resistor

INL (LSB)

Linearity (%FSR)

Output Error (%FSR)

0 V to +5 V

Don't care

1.3

0.002

0.01

0 V to +10 V

Don't care

1.1

0.002

0.02

−5 V to +5 V

Don't care

1.4

0.002

0.02

−10 V to +10 V

Don't care

1.2

0.002

0.02

0 V to +6 V

Don't care

1.9

0.003

0.02

0 V to +12 V

Don't care

1.4

0.002

0.05

−6 V to +6 V

Don't care

1.3

0.002

0.03

−12 V to +12 V

Don't care

1.7

0.003

0.05

−2.5 V to +2.5 V

Don't care

1.3

0.002

0.03

+4 mA to +20 mA

Internal

5.3

0.008

0.07

0 mA to +20 mA

Internal

4.2

0.006

0.06

0 mA to +24 mA

Internal

2.9

0.004

0.05

−20 mA to +20 mA

Internal

5.4

0.008

0.02

−24 mA to +24 mA

Internal

3.9

0.006

0.02

+4 mA to +20mA

External

2.0

0.003

0.04

0 mA to +20mA

External

1.7

0.003

0.04

0 mA to +24mA

External

1.6

0.002

0.04

−20 mA to +20 mA

External

3.7

0.006

0.03

−24 mA to +24 mA

External

4.4

0.007

0.03

+3.92 mA to +20.4 mA

Internal

1.7

0.014

0.11

0 mA to +20.4 mA

Internal

2.9

0.006

1.86

0 mA to +24.5 mA

Internal

2.5

0.005

0.30

The test results shown in Table 1 were made at 25°C for the first

channel of the EVAL-CN0229-SDPZ board powered by an

Agilent E3631A dc supply and measured with the Agilent 34401A

digital multimeter.

and 0 mA to 24.5 mA are all designed to be trimmed by the

customer to precisely match the 4 mA to 20 mA, 0 mA to 20 mA,

and 0 mA to 24 mA ranges. The 1.86% FSR output error

measurement in the 0 mA to 20.4 mA range includes the gain

error, which is easily removed by customer calibration.

There is a lower dead band about 10 mV referenced to GND. All

the linearity test results were calculated using a reduced code

and 0 mA to 24.5 mA, the lower dead band is larger than other

standard ranges, and the measured code range is from 1000 to

65,535.

COMMON VARIATIONS

The AD5685R (14 bits) and the AD5684R (12 bits) are pin-

compatible with the AD5686R for applications not requiring

16-bit resolution.

For applications that require channel-to-channel isolation, single

DACs, such as the AD5660 (16 bits), the AD5640 (14 bits), and

the AD5620 (12 bits), are good choices.

CN-0204 circuit notes for more details.

For multichannel applications, the AD5623R (12-bits), AD5643R

(14-bits), and AD5663R (16-bits) are dual nanoDACs, and the

AD5624R (12-bits), AD5644R (14-bits), and AD5664R (16-bits)

are quad nanoDACs. The AD5628/ AD5648/AD5668 are octal

12-/14-/16-bit SPI voltage output denseDACs with 5 ppm/°C

on-chip references.

The AD5750 and AD5750-1 drivers are pin-compatible with the

AD5750-2. The AD5750 can accept 0 V to 4.096 V input with a

4.096 V reference. The AD5750-1 can accept a 0 V to 2.5 V input

with a 1.25 V reference. The AD5751 is a unipolar analog output

driver and can supply a 40 V output using a 50 V AVDD supply.

CIRCUIT EVALUATION AND TEST

Equipment Needed (Equivalents Can Be Substituted)

•

System Demonstration Platform (EVAL-SDP-CB1Z)

•

CN-0229 Circuit Evaluation Board (EVAL-CN0229-SDPZ)

•

CN-0229 Evaluation Software

•

Agilent 34401A 6.5 Digital Multimeter

•

Agilent E3631A 0 V to ~6 V/5 A ±25 V/1 A Triple Output

DC Power Supply

•

PC (Windows® 2000 or Windows XP) with USB interface

•

National Instruments GPIB to USB-B interface and cable