AD4681
RECOMMENDED FOR NEW DESIGNSDifferential Inputs, 500 kSPS, Dual Simultaneous Sampling SAR ADCs
- Part Models
- 2
- 1ku List Price
- Starting From $9.75
Part Details
- 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
The AD4680/AD4681 are 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.
APPLICATIONS
- Motor control position feedback
- Motor control current sense
- Sonar
- Power quality
- Data acquisition systems
- Erbium doped fiber amplifier (EDFA) applications
- Inphase (I) and quadrature (Q) demodulation
Documentation
Data Sheet 1
Application Note 1
Device Drivers 1
Analog Dialogue 2
Webcast 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| AD4681BCPZ-RL | 16-Lead LFCSP (3mm x 3mm x 0.75mm w/ EP) | ||
| AD4681BCPZ-RL7 | 16-Lead LFCSP (3mm x 3mm x 0.75mm w/ EP) |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Device Drivers 1
Evaluation Software 0
Can't find the software or driver you need?
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| High Speed Op Amps (Bandwidth ≥ 50MHz) 1 | ||
| ADA4807-2 | RECOMMENDED FOR NEW DESIGNS |
3.1 nV/√Hz, 1 mA, 180 MHz, Rail-to-Rail Input/Output Amplifier |
| Low Noise Op Amps (≤ 10nV/√Hz) 1 | ||
| ADA4896-2 | RECOMMENDED FOR NEW DESIGNS | 1 nV/√Hz, Low Power, Rail-to-Rail Output Amplifiers |
| Negative Linear Regulators (LDO) 1 | ||
| ADP7182 | RECOMMENDED FOR NEW DESIGNS | –28 V, −200 mA, Low Noise, Linear Regulator |
| Positive Linear Regulators (LDO) 2 | ||
| ADP7104 | RECOMMENDED FOR NEW DESIGNS | 20 V, 500 mA, Low Noise, CMOS LDO |
| ADP166 | PRODUCTION | Very Low Quiescent Current, 150 mA, LDO Regulator |
| Precision Op Amps (Vos ≤1mV & TCVos ≤2uV/C) 1 | ||
| ADA4805-2 | RECOMMENDED FOR NEW DESIGNS | Dual, 0.2 µV/°C Offset Drift, 105 MHz Low Power, Low Noise, Rail-to-Rail Amplifier |
| Series Voltage References 2 | ||
| ADR4533 | PRODUCTION | Ultra-Low-Noise, High-Accuracy 3.3V Voltage Reference |
| ADR4525 | PRODUCTION | Ultra-Low-Noise, High-Accuracy 2.5V Voltage Reference |
| Single-Ended to Differential Amplifiers 1 | ||
| ADA4940-2 | PRODUCTION | Ultralow Power, Low Distortion ADC Driver |
Tools & Simulations
Precision ADC Driver Tool
Use the Precision ADC Driver Tool to simulate the performance of precision ADC and driver combinations.
Open ToolIBIS Model 1
Evaluation Kits
Evaluation board for the AD7380/AD7381 Dual Simultaneous Sampling 16/14-Bit SAR ADC.