AD4680 Series

Differential Inputs, 1 MSPS, Dual Simultaneous Sampling SAR ADCs

Catalog

Differential Inputs, 1 MSPS, Dual Simultaneous Sampling SAR ADCs

Part	Number of Bits	Voltage - Supply, Analog [Max]	Voltage - Supply, Analog [Min]	Supplier Device Package	Mounting Type	Configuration	Operating Temperature [Max]	Operating Temperature [Min]	Number of A/D Converters	Sampling Rate (Per Second)	Voltage - Supply, Digital [Min]	Voltage - Supply, Digital [Max]	Reference Type	Ratio - S/H:ADC	Architecture	Data Interface	Number of Inputs	Features	Package / Case	Input Type
Analog Devices AD4680BCPZ-RL	16	3.6 V	3 V	16-LFCSP (3x3)	Surface Mount	ADC	125 °C	-40 °C	2	1 M	1.65 V	3.6 V	External Internal	0:2	SAR	Serial	2	Simultaneous Sampling	16-WFQFN Exposed Pad CSP	Differential
Analog Devices AD4680BCPZ-RL7	16	3.6 V	3 V	16-LFCSP (3x3)	Surface Mount	ADC	125 °C	-40 °C	2	1 M	1.65 V	3.6 V	External Internal	0:2	SAR	Serial	2	Simultaneous Sampling	16-WFQFN Exposed Pad CSP	Differential

Catalog

Differential Inputs, 1 MSPS, Dual Simultaneous Sampling SAR ADCs

Key Features

• 16-bit ADC family

• Dual simultaneous sampling

• Fully differential analog inputs

• Throughput conversion rate

• 1 MSPS for AD4680

• 500 kSPS for AD4681

• SNR (typical)

• 92.5 dB, VREF= 3.3 V external

• 100 dB with 8× OSR, RES = 1

• On-chip oversampling function

• Resolution boost function

• INL (maximum) 1.5 LSBs

• 2.5 V internal reference at 10 ppm/°C

• High speed serial interface

• −40°C to +125°C operation

• 3 mm × 3 mm, 16-lead LFCSP

• Wide common-mode range

• Alert function

Description

The AD4680/AD4681are 16-bit, pin-compatible, dual simultaneous sampling, high speed, low power, successive approximation register (SAR) analog-to-digital converters (ADCs) that operate from a 3.0 V to 3.6 V power supply and feature throughput rates of 1 MSPS for the AD4680 and 500 kSPS for the AD4681. The analog input type is differential, accepts a wide common-mode input voltage, and is sampled and converted on the falling edge of CS. Integrated on-chip oversampling blocks improve dynamic range and reduce noise at lower bandwidths. A buffered internal 2.5 V reference is included. Alternatively, an external reference up to 3.3 V can be used.The conversion process and data acquisition use standard control inputs, allowing easy interfacing to microprocessors or digital signal processors (DSPs). The device is compatible with 1.8 V, 2.5 V, and 3.3 V interfaces using a separate logic supply. The AD4680/AD4681 are available in a 16-lead lead frame chip scale package (LFCSP) with operation specified from −40°C to +125°C.ApplicationsMotor control position feedbackMotor control current senseSonarPower qualityData acquisition systemsErbium doped fiber amplifier (EDFA) applicationsInphase (I) and quadrature (Q) demodulation