Build with AD7682 — Datasheet Specs & AI Design Help

00 — Overview

What the AD7682 does

The AD7682/AD7689 are 16-bit, 4-channel or 8-channel, 250 kSPS PulSAR analog-to-digital converters. These devices offer 16-bit resolution with no missing codes and a dynamic range of 93.8 dB. They operate on a single supply from 2.3 V to 5.5 V with a throughput of 250 kSPS and a standby current of 50 nA. The parts include an internal selectable 2.5 V or 4.096 V reference and a temperature sensor. Engineers typically use them for multichannel system monitoring, battery-powered equipment, medical instruments like ECG/EKG, mobile communications, and data acquisition systems. The AD7689 variant also supports an extended temperature range up to +125°C.

Next step

Start building with AD7682 → Every number above is cited straight from the datasheet — ask what they mean for your design, and the assistant answers from the same source documents.

01 — Key specifications

Datasheet parameters

Datasheet parameters for AD7682
Parameter	Min	Typ	Max	Conditions	Source
output voltage	2.49 V	2.5 V	2.51 V	2.5 V at 25°C; ref; INTERNAL REFERENCE	ADI datasheet, p. 6 — Table 4.
supply voltage range	2.3 V	—	5.5 V	Specified performance; vdd6; POWER SUPPLIES	ADI datasheet, p. 7 — Table 4. (Continued)
input offset voltage	1.8 V	—	—	Specified performance; vio; POWER SUPPLIES	ADI datasheet, p. 7 — Table 4. (Continued)
operating temperature	-40 °C	—	85 °C		ADI datasheet, p. 37 — ORDERING GUIDE
power dissipation	—	12.5 mW	18 mW	VDD = 5 V, 250 kSPS throughput; POWER SUPPLIES	ADI datasheet, p. 7 — Table 4. (Continued)
standby current	—	50 nA	—	VDD and VIO = 5 V at 25°C; POWER SUPPLIES	ADI datasheet, p. 7 — Table 4. (Continued)
adc resolution	—	16 bit	—		ADI datasheet, p. 3 — Table 2.
sample rate	0 Hz	—	250 kHz	VDD = 4.5 V to 5.5 V; conversion; Conversion Rate	ADI datasheet, p. 3 — Table 2.
channel count	—	4	—		ADI datasheet, p. 1

02 — Alternatives

Closest matches to AD7682

AD7606 6.0× higher power dissipation, 1.6× higher sample rate, 1.3× higher supply voltage range

MCP3004 1.6× lower adc resolution, 1.6× higher sample rate, 1.1× higher supply voltage range

PCM1804 18.0× higher power dissipation, 1.5× higher sample rate, 1.5× higher adc resolution

ADS1255 4.2× lower sample rate, 3.0× higher power dissipation, 1.6× lower supply voltage range

ADS131M02 15.5× lower settling time, 3.9× lower sample rate, 2.0× lower power dissipation

ADS131M02IPWR 15.5× lower settling time, 3.9× lower sample rate, 2.0× lower power dissipation

ADS7830 2.0× lower adc resolution, 1.9× higher operating temperature, 1.3× higher supply voltage range

AD7190BRUZ 1.5× higher adc resolution, 1.4× higher operating temperature, 1.3× higher supply voltage range

03 — FAQ

Frequently asked questions

What is the ADC resolution of the AD7682BCBZ-RL7?

The ADC resolution is 16 bit.

What is the channel count of the AD7682BCBZ-RL7?

The channel count is 4.

What is the input offset voltage under specified performance conditions with power supplies?

The input offset voltage is 1.8 V.

What is the maximum operating temperature?

The maximum operating temperature is 85 °C.

What is the output voltage under the condition of 2.5 V at 25°C with the internal reference?

The output voltage is 2.5 V.

What is the power dissipation of the AD7682BCBZ-RL7 when VDD = 5 V, 250 kSPS throughput; POWER SUPPLIES?

The power dissipation is 12.5 mW.

What is the sample rate of the AD7682BCBZ-RL7 when VDD is between 4.5 V and 5.5 V?

The sample rate is 250 kHz.

What is the standby current of the AD7682BCBZ-RL7 when VDD and VIO are 5 V at 25°C with power supplies?

The standby current is 50 nA.

What is the supply voltage range for specified performance under vdd6 power supplies?

The supply voltage range is 5.5 V.