Datasheet for AD7689:
- Manufacturer Part Number : AD7689
- Manufacturer : AD
- Description : 16-Bit, 8-Channel,250 kSPS PulSAR ADC
- Series : AD7689
- Reference Price : USD 0
- Our Price : We have a better price, contact us by email
- Product Type : Precision A/D Converters
- Function : Multiplexed A/D Converters
- Current Suggest : Production
- Status : Contact ADI
- RoHS Status: -
- Voltage: -
- Feature: -
- Package Case: -
- Temperature Range: -
- Packing: Reel/Tray/Tube
- Standard Packing Quantity: -
- Country of Origin: -
- Other Part Number : AD7689
- Shipping methods : DHL FEDEX UPS TNT
- Delivery Time : Ship within 1 day.
- Manufacturer Production time : 6-8 weeks (Normally have stocks)
- Weight : 0.001KG
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- Download AD7689-KGD Data Sheet. Available as Known Good Die and fully guaranteed to data sheet specifications.
- 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
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
