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MFG:ADI D/C:09
Part Number: AD7678
MFG: ADI
D/C: 09
Description: The AD7679 is an 18-bit, 570 kSPS, charge redistribution SAR, fully differential analog-to-digital con...
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AD7678
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DataSheet
General Description
AD7678 General Description
The AD7679 is an 18-bit, 570 kSPS, charge redistribution SAR, fully differential analog-to-digital converter that operates on a single 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.
The part is available in a 48-lead LQFP or 48-lead LFCSP with operation specified from 40°C to +85°C.
AD7678 Maximum Ratings
| Parameter | Rating |
| Analog Inputs IN+2, IN2, REF, REFBUFIN, REFGND to AGND |
AVDD + 0.3 V to AGND 0.3 V |
| Ground Voltage Differences AGND, DGND, OGND |
±0.3 V |
| Supply Voltages AVDD, DVDD, OVDD AVDD to DVDD, AVDD to OVDD DVDD to OVDD Digital Inputs |
0.3 V to +7 V ±7 V 0.3 V to +7 V 0.3 V to DVDD + 0.3 V |
| Internal Power Dissipation3 Internal Power Dissipation4 Junction Temperature Storage Temperature Range Lead Temperature Range (Soldering 10 sec) |
700 mW 2.5 W 150°C 65°C to +150°C 300°C |
1Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
2See An section. alog Inputs
3Specification is for device in free air: 48-Lead LQFP: JA = 91°C/W, JC = 30°C/W.
4 Specification is for device in free air: 48-Lead LFCSP: JA = 26°C/W.
AD7678 Features
·18-bit resolution with no missing codes
·No pipeline delay (SAR architecture)
·Differential input range: ±VREF (VREF up to 5 V)
·Throughput: 570 kSPS
·INL: ±2.5 LSB max (±9.5 ppm of full scale)
·Dynamic range : 103 dB typ (VREF = 5 V)
·S/(N+D): 100 dB typ @ 2 kHz (VREF = 5 V)
·Parallel (18-,16-, or 8-bit bus) and serial 5 V/3 V interface
·SPI®/QSPI™/MICROWIRE™/DSP compatible
·On-board reference buffer
·Single 5 V supply operation
·Power dissipation: 76 mW @ 500 kSPS 150 µW @ 1 kSPS
·48-lead LQFP or 48-lead LFCSP package
·Pin-to-pin compatible upgrade of AD7674/AD7676/AD7678
·No pipeline delay (SAR architecture)
·Differential input range: ±VREF (VREF up to 5 V)
·Throughput: 570 kSPS
·INL: ±2.5 LSB max (±9.5 ppm of full scale)
·Dynamic range : 103 dB typ (VREF = 5 V)
·S/(N+D): 100 dB typ @ 2 kHz (VREF = 5 V)
·Parallel (18-,16-, or 8-bit bus) and serial 5 V/3 V interface
·SPI®/QSPI™/MICROWIRE™/DSP compatible
·On-board reference buffer
·Single 5 V supply operation
·Power dissipation: 76 mW @ 500 kSPS 150 µW @ 1 kSPS
·48-lead LQFP or 48-lead LFCSP package
·Pin-to-pin compatible upgrade of AD7674/AD7676/AD7678
AD7678 Typical Application
`CT scanners
`High dynamic data acquisition
`Geophone and hydrophone sensors
`-∆ replacement (low power, multichannel)
`Instrumentation
`Spectrum analysis
`Medical instruments
`High dynamic data acquisition
`Geophone and hydrophone sensors
`-∆ replacement (low power, multichannel)
`Instrumentation
`Spectrum analysis
`Medical instruments
AD7678
PDF/DataSheet Download
- Datasheet: AD7678
- File Size: 1716224 KB
- Manufacturer: AD
- Click here to Download
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