Specification	AD7785BRUZ

Architecture	Sigma-Delta
Configuration	MUX-ADC
Data Interface	DSP, SPI
Input Type	Differential
Mounting Type	Surface Mount
Number of A/D Converters	1 count
Number of Bits	20 bits
Number of Inputs	3
Operating Temperature (Max)	105 °C
Operating Temperature (Min)	-40 °C
Package Length	0.173 in
Package Name	16-TSSOP
Package Width	4.4 mm
Reference Type	External, Internal
Sampling Rate (Per Second)	470 Hz
Voltage - Supply, Analog (Max)	5.25 V
Voltage - Supply, Analog (Min)	2.7 V
Voltage - Supply, Digital (Max)	5.25 V
Voltage - Supply, Digital (Min)	2.7 V

AD7785 Series

Part	Configuration	Number of Bits	Package Length	Package Name	Package Width	Reference Type	Data Interface	Number of A/D Converters	Input Type	Architecture	Operating Temperature (Min)	Operating Temperature (Max)	Sampling Rate (Per Second)	Number of Inputs	Mounting Type	Voltage - Supply, Analog (Max)	Voltage - Supply, Analog (Min)	Voltage - Supply, Digital (Min)	Voltage - Supply, Digital (Max)	Supplied Contents	Utilized IC / Part	Input Range	Contents
Analog Devices Inc./Maxim Integrated AD7785BRUZ-REEL	MUX-ADC	20 bits	0.173 in	16-TSSOP	4.4 mm	External Internal	DSP SPI	1 count	Differential	Sigma-Delta	-40 °C	105 °C	470 Hz	3	Surface Mount	5.25 V	2.7 V	2.7 V	5.25 V
Analog Devices Inc./Maxim Integrated EVAL-AD7785EBZ		20 bits					Serial	1 count					470 Hz							Board(s) Cable(s)	AD7785	±VREF	Board Cable
Analog Devices Inc./Maxim Integrated AD7785BRUZ	MUX-ADC	20 bits	0.173 in	16-TSSOP	4.4 mm	External Internal	DSP SPI	1 count	Differential	Sigma-Delta	-40 °C	105 °C	470 Hz	3	Surface Mount	5.25 V	2.7 V	2.7 V	5.25 V

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$	Updated

Digikey	Tube	1	$ 13.63	<2d
		10	$ 10.74
		96	$ 9.25
		192	$ 8.95
		288	$ 8.80
		576	$ 8.58
		1056	$ 8.42
Newark	Each	1	$ 9.50	30d+
		10	$ 8.39
		25	$ 8.13
		50	$ 7.71
		192	$ 7.43

CAD

3D models and CAD resources for this part

Description

General part information

AD7785 Series

The AD7785 is a low power, low noise, complete analog front ends for high precision measurement applications. It contains a low noise 20-bit Σ-Δ ADC with three differential analog inputs. The on-chip, low noise instrumentation amplifier means that signals of small amplitude can be interfaced directly to the ADC. With a gain setting of 64, the rms noise is 40 nV when the update rate equals 4.17 Hz.The device contains a precision low noise, low drift internal band gap reference and can also accept an external differential reference. Other on-chip features include programmable excitation current sources, burnout currents, and a bias voltage generator, the bias voltage generator being used to set the common-mode voltage of a channel to AVDD/2.The device can be operated with either the internal clock or an external clock. The output data rate from the part is software-programmable and can be varied from 4.17 Hz to 470 Hz.The part operates with a power supply from 2.7 V to 5.25 V. It consumes a current of 400 µA typical and is housed in 16-lead TSSOP packages.APPLICATIONSThermocouple measurementsRTD measurementsThermistor measurementsGas analysisIndustrial process controlInstrumentationPortable instrumentationBlood analysisSmart transmittersLiquid/gas chromatography6-digit DVM