AD7949
PRODUCTION14-Bit, 8-Channel, 250 kSPS PulSAR ADC
- Part Models
- 4
- 1ku List Price
- Starting From $4.90
Part Details
- 14-bit resolution with no missing codes
- 8-channel multiplexer with choice of inputs
Unipolar single-ended
Differential (GND sense)
Pseudobipolar
- Multiple reference types
Internal selectable 2.5 V or 4.096 V
External buffered (up to 4.096 V)
External (up to VDD) - See datasheet for additional features
The AD7949 is an 8-channel, 14-bit, charge redistribution successive approximation register (SAR) analog-to-digital converter (ADC) that operates from a single power supply, VDD.
The AD7949 contains all components for use in a multichannel, low power data acquisition system, including a true 14-bit SAR ADC with no missing codes; an 8-channel, 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 AD7949 uses a simple SPI interface 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 AD7949 is housed in a tiny 20-lead LFCSP with operation specified from −40°C to +85°C.
APPLICATIONS
- Multichannel system monitoring
- Battery-powered equipment
- Medical instruments: ECG/EKG
- Mobile communications: GPS
- Personal digital assistants
- Power line monitoring
- Data acquisition
- Seismic data acquisition systems
- Instrumentation
- Process control
Documentation
Data Sheet 3
Application Note 1
Technical Articles 1
Device Drivers 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 |
|---|---|---|---|
| AD7949BCPZ | 20-Lead LFCSP (4mm x 4mm w/ EP) | ||
| AD7949BCPZRL7 | 20-Lead LFCSP (4mm x 4mm w/ EP) | ||
| AD7949SCPZ-EP-R2 | 20-Lead LFCSP (4mm x 4mm w/ EP) | ||
| AD7949SCPZ-EP-RL7 | 20-Lead LFCSP (4mm x 4mm w/ EP) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jul 25, 2017 - 17_0068 CANCELLED: Addition of ASE Korea as an Alternate Assembly Site for Select 3x3mm and 4x4mm Body Sizes LFCSP Devices |
||
| AD7949BCPZ | PRODUCTION | |
| AD7949BCPZRL7 | PRODUCTION | |
| AD7949SCPZ-EP-R2 | ||
| AD7949SCPZ-EP-RL7 | PRODUCTION | |
|
Apr 15, 2009 - 09_0061 AD7682/AD7689/AD7949 Startup Circuitry Design Improvement and Data Sheet Changes |
||
| AD7949BCPZ | PRODUCTION | |
| AD7949BCPZRL7 | PRODUCTION | |
|
Feb 15, 2010 - 07_0061 LFCSP Package Manufacturing Line Transfer from Amkor Korea to Amkor PRC |
||
| AD7949BCPZRL7 | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Device Drivers 2
Mbed Support 1
Evaluation Software 0
Can't find the software or driver you need?
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Differential Amplifiers 2 | ||
| AD8475 | PRODUCTION | Precision, Selectable Gain, Fully Differential Funnel Amplifier |
| ADA4941-1 | PRODUCTION | Single-Supply, Differential 18-Bit ADC Driver |
| Operational Amplifiers 11 | ||
| 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 |
| AD8031 | PRODUCTION | 2.7 V, 800 µA, 80 MHz Rail-to-Rail I/O Single Amplifier |
| AD8605 | PRODUCTION | Precision, Low Noise, CMOS, RRIO Op Amp (single) |
| AD8655 | PRODUCTION | Low Noise, Precision CMOS Amplifier |
| 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 |
| 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 |
| Voltage References 2 | ||
| ADR433 | PRODUCTION | Ultralow Noise XFET® 3.0V Voltage Reference w/Current Sink and Source Capability |
| ADR445 | PRODUCTION | Ultralow Noise, LDO XFET® 5.0V Voltage Reference w/Current Sink and Source |
Tools & Simulations
IBIS Model 1
Evaluation Kits
AD7949 Evaluation Kit
Resources
Software
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