AD7682
PRODUCTION16-Bit, 4-Channel, 250 kSPS PulSAR ADC
- Part Models
- 3
- 1ku List Price
- Starting From $7.21
Part Details
- 16-bit resolution with no missing codes
- 4-channel (AD7682)/8-channel (AD7689) multiplexer with choice of inputs
- Unipolar single-ended
- Differential (GND sense)
- Pseudobipolar
- Throughput: 250 kSPS
- INL: ±0.4 LSB typical, ±1.5 LSB maximum (±23 ppm or FSR)
- Dynamic range: 93.8 dB
- SINAD: 92.5 dB at 20 kHz
- THD: −100 dB at 20 kHz
- Analog input range: 0 V to VREF with VREF up to VDD
- Multiple reference types
- Internal selectable 2.5 V or 4.096 V
- External buffered (up to 4.096 V)
- External (up to VDD)
- Internal temperature sensor (TEMP)
- Channel sequencer, selectable 1-pole filter, busy indicator
- No pipeline delay, SAR architecture
- Single-supply 2.3 V to 5.5 V operation with 1.8 V to 5.5 V logic interface
- Serial interface compatible with SPI, MICROWIRE, QSPI, and DSP
- Power dissipation
- 3.5 mW at 2.5 V/200 kSPS
- 12.5 mW at 5 V/250 kSPS
- Standby current: 50 nA
- Low cost grade available
- 20-lead 4 mm × 4 mm LFCSP package
- 20-lead 2.4 mm × 2.4 mm WLCSP package
The AD7682/AD7689 are 4-channel/8-channel, 16-bit, charge redistribution successive approximation register (SAR) analog-to-digital converters (ADCs) that operate from a single power supply, VDD.
The AD7682/AD7689 contain all components for use in a multichannel, low power data acquisition system, including a true 16-bit SAR ADC with no missing codes; a 4-channel (AD7682) or 8-channel (AD7689) low crosstalk multiplexer that is useful for configuring the inputs as single-ended (with or without ground sense), differential, or bipolar; an internal low drift reference (selectable 2.5 V or 4.096 V) and buffer; a temperature sensor; a selectable one-pole filter; and a sequencer that is useful when channels are continuously scanned in order.
The AD7682/AD7689 use a simple serial port interface (SPI) for writing to the configuration register and receiving conversion results. The SPI interface uses a separate supply, VIO, which is set to the host logic level. Power dissipation scales with throughput.
The AD7682/AD7689 are housed in a tiny 20-lead lead frame chip scale package (LFCSP) and 20-lead wafer level chip scale package (WLCSP) with operation specified from −40°C to +85°C. The AD7689 includes an extended temperature range model with specifications guaranteed to a maximum temperature (TMAX) of +125°C.
APPLICATIONS
- Multichannel system monitoring
- Battery-powered equipment
- Medical instruments: ECG/EKG
- Mobile communications: GPS
- Power line monitoring
- Data acquisition
- Seismic data acquisition systems
- Instrumentation
- Process control
Documentation
Data Sheet 1
Application Note 1
Technical Articles 1
Evaluation Design File 1
Tutorial 2
Technical Book 1
Device Drivers 3
Product Selection Guide 1
Analog Dialogue 2
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 |
|---|---|---|---|
| AD7682BCBZ-RL7 | 20-Ball WLCSP (2.39mm x 2.39mm) | ||
| AD7682BCPZ | 20-Lead LFCSP (4mm x 4mm w/ EP) | ||
| AD7682BCPZRL7 | 20-Lead LFCSP (4mm x 4mm w/ EP) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
May 20, 2024 - 23_0143 Qualification of an Alternate Wafer Fab Site for 0.5um TSMC CMOS Process |
||
| AD7682BCBZ-RL7 | PRODUCTION | |
| AD7682BCPZ | PRODUCTION | |
| AD7682BCPZRL7 | PRODUCTION | |
|
Jul 25, 2017 - 17_0068 CANCELLED: Addition of ASE Korea as an Alternate Assembly Site for Select 3x3mm and 4x4mm Body Sizes LFCSP Devices |
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| AD7682BCPZ | PRODUCTION | |
| AD7682BCPZRL7 | PRODUCTION | |
|
May 5, 2014 - 14_0020 Conversion of 4x4mm body Size LFCSP Package Outlines from Punch to Sawn and Transfer of Assembly Site to Amkor Philippines. |
||
| AD7682BCPZ | PRODUCTION | |
| AD7682BCPZRL7 | PRODUCTION | |
|
Apr 15, 2009 - 09_0061 AD7682/AD7689/AD7949 Startup Circuitry Design Improvement and Data Sheet Changes |
||
| AD7682BCPZ | PRODUCTION | |
| AD7682BCPZRL7 | PRODUCTION | |
|
Feb 15, 2010 - 07_0061 LFCSP Package Manufacturing Line Transfer from Amkor Korea to Amkor PRC |
||
| AD7682BCPZRL7 | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Device Drivers 3
Mbed Support 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) 2 | ||
| ADA4807-1 | RECOMMENDED FOR NEW DESIGNS |
3.1 nV/√Hz, 1 mA, 180 MHz, Rail-to-Rail Input/Output Amplifier |
| ADA4807-2 | RECOMMENDED FOR NEW DESIGNS |
3.1 nV/√Hz, 1 mA, 180 MHz, Rail-to-Rail Input/Output Amplifier |
| Low Input Bias Current Op Amps (≤100 pA) 3 | ||
| ADA4627-1 | PRODUCTION | 36 V, 19 MHz, Low Noise, Low Bias Current, JFET Op Amp |
| ADA4637-1 | PRODUCTION | 30 V, 80 MHz, Low Noise, Low Bias Current, JFET Op Amp |
| AD8610 | PRODUCTION | Precision, Low Input Bias Current, Wide BW JFET Single Op Amp |
| Low Noise Op Amps (≤ 10nV/√Hz) 2 | ||
| ADA4897-1 | RECOMMENDED FOR NEW DESIGNS | 1 nV/√Hz, Low Power, Rail-to-Rail Output Amplifiers |
| ADA4897-2 | RECOMMENDED FOR NEW DESIGNS | 1 nV/√Hz, Low Power Operational Amplifier |
| Multiple Output Buck Regulators 1 | ||
| ADP2114 | PRODUCTION | Configurable, Dual 2 A/Single 4 A, Synchronous Step-Down DC-to-DC Regulator |
| Positive Linear Regulators (LDO) 2 | ||
| ADP151 | PRODUCTION | Ultralow Noise, 200 mA, CMOS Linear Regulator |
| ADP160 | PRODUCTION | Ultra Low Quiescent Current 150 mA, CMOS Linear Regulator |
| Precision Op Amps (Vos ≤1mV & TCVos ≤2uV/C) 4 | ||
| ADA4805-1 | RECOMMENDED FOR NEW DESIGNS | 0.2 µV/°C Offset Drift, 105 MHz Low Power, Low Noise, Rail-to-Rail Amplifier |
| ADA4805-2 | RECOMMENDED FOR NEW DESIGNS | Dual, 0.2 µV/°C Offset Drift, 105 MHz Low Power, Low Noise, Rail-to-Rail Amplifier |
| ADA4841-1 | PRODUCTION | Low Power, Low Noise and Distortion, Rail-to-Rail Output Amplifier |
| ADA4841-2 | PRODUCTION | Low Power, Low Noise and Distortion, Rail-to-Rail Output Amplifier |
| Series Voltage References 2 | ||
| ADR440 | PRODUCTION | Ultralow Noise, LDO XFET® 2.048V Voltage Reference w/Current Sink and Source |
| ADR430 | PRODUCTION | Ultralow Noise XFET® 2.048V Voltage Reference w/Current Sink and Source Capability |
| Standard Digital Isolators 4 | ||
| ADUM1401 | PRODUCTION | Quad-Channel Digital Isolator (3/1 Channel Directionality) |
| ADUM3401 | PRODUCTION | Quad-Channel, Digital Isolator, Enhanced System-Level ESD Reliability |
| ADUM3481 | PRODUCTION | Small, 3.75 kV RMS Quad Digital Isolators (3/1 Channel Directionality) |
| ADUM4401 | PRODUCTION |
5 kV RMS Quad-Channel Digital Isolators |
Tools & Simulations
IBIS Model 1
Evaluation Kits
AD7682 Evaluation Kit