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AD9057 数据表(PDF) 4 Page - Analog Devices |
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AD9057 数据表(HTML) 4 Page - Analog Devices |
4 / 12 page REV. C AD9057 –4– CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD9057 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high-energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. WARNING! ESD SENSITIVE DEVICE ABSOLUTE MAXIMUM RATINGS VD, VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Analog Inputs . . . . . . . . . . . . . . . . . . . . –0.5 V to VD + 0.5 V Digital Inputs . . . . . . . . . . . . . . . . . . . –0.5 V to VDD + 0.5 V VREF Input . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to VD + 0.5 V Digital Output Current . . . . . . . . . . . . . . . . . . . . . . . . 20 mA Operating Temperature . . . . . . . . . . . . . . . . –55 °C to +125°C Storage Temperature . . . . . . . . . . . . . . . . . . –65 °C to +150°C Maximum Junction Temperature . . . . . . . . . . . . . . . . 150 °C Maximum Case Temperature . . . . . . . . . . . . . . . . . . . 150 °C ORDERING GUIDE Temperature Model Range Package Option * AD9057BRS–40, –60, –80 –40 °C to +85°C RS-20 AD9057/PCB 25 °C Evaluation Board *RS = Shrink Small Outline (SSOP). Table I. Digital Coding (VREF = 2.5 V) Analog Input Voltage Level Digital Output 3.0 V Positive Full Scale 1111 1111 2.502 V Midscale +1/2 LSB 1000 0000 2.498 V Midscale –1/2 LSB 0111 1111 2.0 V Negative Full Scale 0000 0000 PIN FUNCTION DESCRIPTIONS Pin No. Mnemonic Function 1 PWRDN Power-Down Function Select; Logic HIGH for Power-Down Mode (Digital Outputs Go to High Impedance State). 2 VREF OUT Internal Reference Output (2.5 V typ); Bypass with 0.1 µF to Ground. 3 VREF IN Reference Input for ADC (2.5 V typ, ±10%) 4, 9, 16 GND Ground (Analog/Digital) 5, 8 VD Analog 5 V Power Supply 6 BIAS OUT Bias Pin for AC Coupling (1 k Ω to REF IN) 7 AIN Analog Input for ADC 10 ENCODE Encode Clock for ADC (ADC Samples on Rising Edge of ENCODE) 11–14, 17–20 D7–D4, D3–D0 Digital Outputs of ADC 15 VDD Digital Output Power Supply; Nominally 3 V to 5 V. PIN CONFIGURATION 14 13 12 11 17 16 15 20 19 18 10 9 8 1 2 3 4 7 6 5 TOP VIEW (Not to Scale) PWRDN D3 D2 D1 D0 (LSB) VREF OUT VREF IN GND AD9057 D4 VDD GND VD BIAS OUT AIN VD GND ENCODE D7 (MSB) D6 D5 |
类似零件编号 - AD9057 |
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类似说明 - AD9057 |
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