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MFG:ADI D/C:09
Part Number: AD7641
MFG: ADI
D/C: 09
Description: The AD7641 is a 18-bit, 2 MSPS, charge redistribution SAR, fully differential analog-to-digital converter that operates...
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AD7641
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DataSheet
General Description
AD7641 General Description
The AD7641 is a 18-bit, 2 MSPS, charge redistribution SAR, fully differential analog-to-digital converter that operates from a single 2.5 V power supply. The part contains a high-speed 18- bit sampling ADC, an internal conversion clock, an internal reference buffer, error correction circuits, and both serial and parallel system interface ports. It features a very high sampling rate mode (Warp) and a fast mode (Normal) for asynchronous conversion rate applications. The AD7641 is hardware factory calibrated and comprehensively tested to ensure ac parameters such as signal-to-noise ratio (SNR) and total harmonic distortion (THD) in addition to the more traditional dc parameters of gain, offset and linearity. Operation is specified from −40°C to +85°C.
AD7641 Maximum Ratings
|
Parameter |
Rating |
| Analog Inputs IN+2, IN-2, REF, REFBUFIN, REFGND to AGND Ground Voltage Differences AGND, DGND, OGND Supply Voltages AVDD, DVDD OVDD Digital Inputs Internal Power Dissipation3 Internal Power Dissipation4 Junction Temperature Storage Temperature Range Lead Temperature Range (Soldering 10 sec) |
AVDD + 0.3 V to AGND 0.3 V ±0.3 V 0.3 V to +2.7 V 0.3 V to +3.8 V 0.3 V to 5.5V 700 mW 2.5 W 150°C 65°C to +150°C 300°C |
AD7641 Features
18-bit resolution with no missing codes
2.5V internal low drift refernce
Throughput:
2 MSPS (Warp mode)
1.5 MSPS (Normal mode)
INL: ±2 LSB typical
S/(N+D): 93 dB typical @ 100 kHz ( VREF = 2.5 V )
THD: −100 dB typical @ 100 kHz
Differential input range: ±VREF (VREF up to 2.5 V)
No pipeline delay ( SAR architecture )
Parallel (18-, 16-, or 8-bit bus)
Serial 5 V/3.3 V/2.5 V interface
SPI®/QSPI™/MICROWIRE™/DSP compatible
On-board low drift reference with buffer and temperature sensor
Single 2.5 V supply operation
Power dissipation: 100 mW typical @ 2 MSPS
Power-down mode
48-LQFP and LFCSP packages
Speed upgrade of the AD7674
Pin-to-pin compatible with the AD7621
2.5V internal low drift refernce
Throughput:
2 MSPS (Warp mode)
1.5 MSPS (Normal mode)
INL: ±2 LSB typical
S/(N+D): 93 dB typical @ 100 kHz ( VREF = 2.5 V )
THD: −100 dB typical @ 100 kHz
Differential input range: ±VREF (VREF up to 2.5 V)
No pipeline delay ( SAR architecture )
Parallel (18-, 16-, or 8-bit bus)
Serial 5 V/3.3 V/2.5 V interface
SPI®/QSPI™/MICROWIRE™/DSP compatible
On-board low drift reference with buffer and temperature sensor
Single 2.5 V supply operation
Power dissipation: 100 mW typical @ 2 MSPS
Power-down mode
48-LQFP and LFCSP packages
Speed upgrade of the AD7674
Pin-to-pin compatible with the AD7621
AD7641 Typical Application
Medical instruments
High dynamic data acquisition
Instrumentation
Spectrum analysis
ATE
High dynamic data acquisition
Instrumentation
Spectrum analysis
ATE
AD7641 Connection Diagram
AD7641
PDF/DataSheet Download
- Datasheet: AD7641
- File Size: 1979329 KB
- Manufacturer: AD
- Click here to Download
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