(China (Mainland))
Product Summary
The AD7679ASTZ is an 18-bit, 570kSPS, 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 AD7679ASTZ is available in a 48-lead LQFP or 48-lead LFCSP with operation specified from –40℃ to +85℃. The applications of the AD7679ASTZ include CT scanners, High dynamic data acquisition, Geophone and hydrophone sensors, Instrumentation, Spectrum analysis, Medical instruments.
Parametrics
AD7679ASTZ absolute maximum ratings: (1)Analog Inputs IN+2, IN–2, REF, REFBUFIN, REFGND; (2)to AGND: AVDD + 0.3V to AGND–0.3V; (3)Ground Voltage Differences AGND, DGND, OGND: ±0.3V; (4)Supply Voltages AVDD, DVDD, OVDD:–0.3V to +7V; (5)AVDD to DVDD, AVDD to OVDD: ±7V; (6)DVDD to OVDD :–0.3V to +7 V; (7)Digital Inputs: –0.3 V to DVDD + 0.3 V; (8)Internal Power Dissipation3: 700mW; (9)Internal Power Dissipation4: 2.5W; (10)Junction Temperature: 150℃; (11)Storage Temperature Range:–65℃ to +150℃; (12)Lead Temperature Range (Soldering 10 sec): 300℃.
Features
AD7679ASTZ features: (1)18-bit resolution with no missing codes; (2)No pipeline delay (SAR architecture); (3)Differential input range: ±VREF (VREF up to 5V); (4)Throughput: 570kSPS; (5)INL: ±2.5 LSB max (±9.5ppm of full scale); (6)Dynamic range : 103 dB typ (VREF = 5V); (7)S/(N+D): 100 dB typ @ 2 kHz (VREF = 5V); (8)Parallel (18-,16-, or 8-bit bus) and serial 5V/3V interface; (9)SPI/QSPI/MICROWIRE?DSP compatible; (10)On-board reference buffer; (11)Single 5V supply operation; (12)Power dissipation: 76mW @ 500kSPS; 150μW @ 1kSPS; (13)48-lead LQFP or 48-lead LFCSP package; (14)Pin-to-pin compatible upgrade of AD7674/AD7676/AD7678.
Diagrams
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 AD7679ASTZ |
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IC ADC 18BIT 570KSPS 48-LQFP |
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AD7679ASTZRL |
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IC ADC 18BIT SAR W/BUFF 48LQFP |
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