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DAC5687 Fiches technique(PDF) 6 Page - Texas Instruments |
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DAC5687 Fiches technique(HTML) 6 Page - Texas Instruments |
6 / 72 page www.ti.com ELECTRICAL CHARACTERISTICS DAC5687 SLWS164B – FEBRUARY 2005 – REVISED JUNE 2005 over recommended operating free-air temperature range, AVDD = 3.3 V, CLKVDD = 3.3 V, PLLVDD = 3.3 V, IOVDD = 3.3 V, DVDD = 1.8 V, IOUT FS = 19.2 mA (unless otherwise noted) DC SPECIFICATIONS PARAMETER TEST CONDITIONS MIN TYP MAX UNIT RESOLUTION 16 Bits DC ACCURACY(1) 1 LSB = IOUTFS/216 INL Integral nonlinearity ±4 LSB TMIN to TMAX DNL Differential nonlinearity ±4 LSB ANALOG OUTPUT Coarse gain linearity ±0.04 LSB Worst case error from ideal linearity Fine gain linearity ±3 LSB Offset error Mid code offset 0.01 %FSR Without internal reference 1 %FSR Gain error With internal reference 0.7 %FSR With internal reference, dual DAC, and SSB Gain mismatch -2 2 %FSR mode Minimum full-scale output current(2) 2 mA Maximum full-scale output current(2) 20 mA AVDD AVDD + Output compliance range(3) IOUTFS = 20 mA V –0.5 V 0.5 V Output resistance 300 k Ω Output capacitance 5 pF REFERENCE OUTPUT Reference voltage 1.14 1.2 1.26 V Reference output current(4) 100 nA REFERENCE INPUT VEXTIO Input voltage range 0.1 1.25 V Input resistance 1 M Ω Small signal bandwidth 1.4 MHz Input capacitance 100 pF TEMPERATURE COEFFICIENTS ppm of Offset drift ±1 FSR/°C Without internal reference ±15 ppm of Gain drift FSR/°C With internal reference ±30 ppm of Reference voltage drift ±8 FSR/°C POWER SUPPLY AVDD Analog supply voltage 3 3.3 3.6 V DVDD Digital supply voltage 1.71 1.8 2.15 V CLKVDD Clock supply voltage 3 3.3 3.6 V IOVDD I/O supply voltage 1.71 3.6 V PLLVDD PLL supply voltage 3 3.3 3.6 V (1) Measured differential across IOUTA1 and IOUTA2 or IOUTB1 and IOUTB2 with 25 Ω each to AVDD. (2) Nominal full-scale current, IOUTFS , equals 32X the IBIAS current. (3) The lower limit of the output compliance is determined by the CMOS process. Exceeding this limit may result in transistor breakdown, resulting in reduced reliability of the DAC5687 device. The upper limit of the output compliance is determined by the load resistors and full-scale output current. Exceeding the upper limit adversely affects distortion performance and integral nonlinearity. (4) Use an external buffer amplifier with high impedance input to drive any external load. 6 |
Numéro de pièce similaire - DAC5687 |
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Description similaire - DAC5687 |
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