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MFG:ADI D/C:09
Part Number: AD7655
MFG: ADI
D/C: 09
Description: The AD7655 is a low cost, 4-channel, 16-bit, charge redistribution SAR, analog-to-digital converter th...
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AD7655
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Suppliers
DataSheet
General Description
AD7655 General Description
The AD7655 is a low cost, 4-channel, 16-bit, charge redistribution SAR, analog-to-digital converter that operates from a single 5 V power supply. It contains two low noise, wide bandwidth track-andhold amplifiers that allow simultaneous sampling, a high speed 1 MSPS 16-bit sampling ADC, an internal conversion clock, error correction circuits, and both serial and parallel system interface ports. Each track-and-hold has a multiplexer in front to provide a 4-channel input ADC.
The AD7655 features a very high sampling rate mode (Normal) and, for low power applications, a reduced power mode (Impulse) where the power is scaled with the throughput. It is available in 48-lead LQFP or 48-lead LFCSP packages with operation specified from 40C to +85C.
AD7655 Maximum Ratings
Analog Inputs
INAx2, INBx2, REFx, INxN, REFGND
AGND . . . . . . . . . . . . . . . . . . . . . ............... 0.3 V to AVDD + 0.3 V
Ground Voltage Differences
AGND, DGND, OGND . . . . . . . . . ................... . . . . . . . . . . . . ±0.3 V
Supply Voltages
AVDD, DVDD, OVDD . . . . . . . . . . . . ................. . . . . 0.3 V to +7 V
AVDD to DVDD, AVDD to OVDD . . . ...................... . . . . . . . . . . ±7 V
DVDD to OVDD . . . . . . . . . . . . . . ................ . . . . . . . -0.3 V to +7 V
Digital Inputs . . . . . . . . . . . . . . ................ . . 0.3 V to DVDD + 0.3 V
Internal Power Dissipation3 . . . . . ........... . . . . . . . . . . . . . . .700 mW
Internal Power Dissipation4 . . . . . . . . . . .......... . . . . . . . . . . . . 2.5 W
Junction Temperature . . . . . . . . . . . . . . . . . . . .............. . . . . . . 150
Storage Temperature Range . . . . . . . . . . . . ............ 65 to +150
Lead Temperature Range
(Soldering 10 sec) . . . . . . . . . . . . . . . . . . . .................. . . . . . . . 300
INAx2, INBx2, REFx, INxN, REFGND
AGND . . . . . . . . . . . . . . . . . . . . . ............... 0.3 V to AVDD + 0.3 V
Ground Voltage Differences
AGND, DGND, OGND . . . . . . . . . ................... . . . . . . . . . . . . ±0.3 V
Supply Voltages
AVDD, DVDD, OVDD . . . . . . . . . . . . ................. . . . . 0.3 V to +7 V
AVDD to DVDD, AVDD to OVDD . . . ...................... . . . . . . . . . . ±7 V
DVDD to OVDD . . . . . . . . . . . . . . ................ . . . . . . . -0.3 V to +7 V
Digital Inputs . . . . . . . . . . . . . . ................ . . 0.3 V to DVDD + 0.3 V
Internal Power Dissipation3 . . . . . ........... . . . . . . . . . . . . . . .700 mW
Internal Power Dissipation4 . . . . . . . . . . .......... . . . . . . . . . . . . 2.5 W
Junction Temperature . . . . . . . . . . . . . . . . . . . .............. . . . . . . 150
Storage Temperature Range . . . . . . . . . . . . ............ 65 to +150
Lead Temperature Range
(Soldering 10 sec) . . . . . . . . . . . . . . . . . . . .................. . . . . . . . 300
AD7655 Features
4-Channel, 16-Bit Resolution ADC
2 Track-and-Hold Amplifiers Throughput:
1 MSPS (Normal Mode)
888 kSPS (Impulse Mode)
Analog Input Voltage Range: 0 V to 5 V
No Pipeline Delay
Parallel and Serial 5 V/3 V Interface
SPI®/QSPI™/MICROWIRE™/DSP Compatible
Single 5 V Supply Operation
Power Dissipation
120 mW Typical,
2.6 mW @ 10 kSPS
Package: 48-Lead Quad Flat Pack (LQFP) or
48-Lead Frame Chip Scale Pack (LFCSP)
Pin-to-Pin Compatible with the AD7654
Low Cost
2 Track-and-Hold Amplifiers Throughput:
1 MSPS (Normal Mode)
888 kSPS (Impulse Mode)
Analog Input Voltage Range: 0 V to 5 V
No Pipeline Delay
Parallel and Serial 5 V/3 V Interface
SPI®/QSPI™/MICROWIRE™/DSP Compatible
Single 5 V Supply Operation
Power Dissipation
120 mW Typical,
2.6 mW @ 10 kSPS
Package: 48-Lead Quad Flat Pack (LQFP) or
48-Lead Frame Chip Scale Pack (LFCSP)
Pin-to-Pin Compatible with the AD7654
Low Cost
AD7655 Typical Application
4-Channel Data Acquisition
AD7655 Connection Diagram
AD7655
PDF/DataSheet Download
- Datasheet: AD7655
- File Size: 1471868 KB
- Manufacturer: AD
- Click here to Download
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