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Updated at 01/11/2025 10:30:15(UTC+8)
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Description
- Product Details
- 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
- ### Features and Benefits
- 14-bit resolution with no missing codes
- 8-channel multiplexer with choice of inputs
- Unipolar single-ended
- Differential (GND sense)
- Pseudobipolar
- Throughput: 250 kSPS
- INL/DNL: ±0.5/±0.25 LSB typical
- SINAD: 85 dB @ 20 kHz
- THD: −100 dB @ 20 kHz
- Analog input range: 0 V to VREF with VREF up to VDD
- See data sheet for additional features
- **AD7949-EP supports defense and aerospace applications (AQEC standard)**
- Download AD7949-EP data sheet
- Military temperature range (−55°C to +125°C)
- Controlled manufacturing baseline
- Enhanced product change notification
- Qualification data available on request
- V62/12645 DSCC Drawing Number
AD7949BCPZRL7 Specifications
| Attribute | Attribute Value |
|---|---|
| Datasheet | Datasheet |
| 3D Model | 3D Model |
| Mounting Style | Surface Mount |
| Number of Pins | 20 Pin |
| Case/Package | LFCSP-20 |
| Number of Circuits | 1 Circuit |
| Number of Channels | 8 Channel |
| Number of Positions | 20 Position |
| Number of Bits | 14 Bit |
| Power Dissipation | 13.5 mW |
| Sample Rate | 250 ksps |
| Power Consumption | 13.5 mW |
| Resolution (Bits) | 14.0 Bit |
| Number of ADCs | 1 ADC |
| Number of Inputs | 8 Input |
| Operating Temperature (Max) | 85 ℃ |
| Operating Temperature (Min) | -40 ℃ |
| Power Dissipation (Max) | 15.5 mW |
| Supply Voltage (Max) | 5.5 V |
| Supply Voltage (Min) | 2.3 V |
| Show | |
| Size-Length | 4 mm |
| Size-Width | 4 mm |
| Size-Height | 0.83 mm |
| Operating Temperature | -40℃ ~ 85℃ |
| Product Lifecycle Status | Active |
| Packaging | Tape & Reel (TR) |
| RoHS | RoHS Compliant |
| Lead-Free Status | Lead Free |
| Mil-Spec | No |
| ECCN Code | EAR99 |
Order guide
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- Please confirm with the logistics company in advance for remote areas.
(Additional charges ($35-$50) may apply for delivery in these areas)
- Delivery date: usually 2 to 7 working days.
- A tracking number will be sent after your order ships.
- - Carefully inspected and packed by ManyChip warehouse - Vacuum packaging - Anti-static packaging - Shockproof foam
- The terms here are for reference only, the actual terms are subject to the sales quotation. - Please confirm product specifications when ordering. - MOQ refers to the minimum order quantity required to purchase each part. - If you have special ordering instructions, please indicate them on the ordering page. - Inspection (PSI) will be performed prior to shipment.
- - Income Quality Control (IQC), 1000+ qualified dealers. - Chips are tested by authoritative organizations to ensure the quality, authenticity and safety of your device. - Decapsulation control - X-ray control - XRF inspection - Electrical testing - Surface testing -Digital components warehouse, covering an area of 800 square meters, with constant temperature and humidity
Contact Us
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