Datasheet AD7859, AD7859L (Analog Devices) - 3

AD7859/AD7859L–SPECIFICATIONS1, 2 (AVDD = DVDD = +3.0 V to +5.5 V, REFIN/REFOUT = 2.5 V External Reference, fCLKIN = 4 MHz (for L Version: 1.8 MHz (0
8
C to +70
8
C) and 1 MHz (–40
8
C to +85
8
C)); fSAMPLE = 200 kHz (AD7859) 100 kHz (AD7859L); SLEEP = Logic High; TA = TMIN to TMAX, unless otherwise noted.) Specifications in () apply to the AD7859L. Parameter A Version1 B Version1 Units Test Conditions/Comments
DYNAMIC PERFORMANCE Signal to Noise + Distortion Ratio3 70 71 dB min Typically SNR is 72 dB (SNR) VIN = 10 kHz Sine Wave, fSAMPLE = 200 kHz (for L Version: fSAMPLE = 100 kHz @ fCLKIN = 2 MHz) Total Harmonic Distortion (THD) –78 –78 dB max VIN = 10 kHz Sine Wave, fSAMPLE = 200 kHz (for L Version: fSAMPLE = 100 kHz @ fCLKIN = 2 MHz) Peak Harmonic or Spurious Noise –78 –78 dB max VIN = 10 kHz Sine Wave, fSAMPLE = 200 kHz (for L Version: fSAMPLE = 100 kHz @ fCLKIN = 2 MHz) Intermodulation Distortion (IMD) Second Order Terms –78 –78 dB typ fa = 9.983 kHz, fb = 10.05 kHz, fSAMPLE = 200 kHz (for L Version: fSAMPLE = 100 kHz @ fCLKIN = 2 MHz) Third Order Terms –78 –78 dB typ fa = 9.983 kHz, fb = 10.05 kHz, fSAMPLE = 200 kHz (for L Version: fSAMPLE = 100 kHz @ fCLKIN = 2 MHz) Channel-to-Channel Isolation –80 –80 dB typ VIN = 25 kHz DC ACCURACY Resolution 12 12 Bits Integral Nonlinearity ±1 ±0.5 LSB max 5 V Reference VDD = 5 V Differential Nonlinearity ±1 ±1 LSB max Guaranteed No Missed Codes to 12 Bits Unipolar Offset Error ±5 ±5 LSB max ±2 ±2 LSB typ Unipolar Offset Error Match 2(3) 2 LSB max Positive Full-Scale Error ±5 ±5 LSB max ±2 ±2 LSB typ Negative Full-Scale Error ±2 ±2 LSB max Full-Scale Error Match 1 1 LSB max Bipolar Zero Error ±1 ±1 LSB typ Bipolar Zero Error Match 2 2 LSB typ ANALOG INPUT Input Voltage Ranges 0 to VREF 0 to VREF Volts i.e., AIN(+) – AIN(–) = 0 to VREF, AIN(–) Can Be Biased Up But AIN(+) Cannot Go Below AIN(–) ±VREF/2 ±VREF/2 Volts i.e., AIN(+) – AIN(–) = –VREF/2 to +VREF/2, AIN(–) Should Be Biased to +VREF/2 and AIN(+) Can Go Below AIN(–) But Cannot Go Below 0 V Leakage Current ±1 ±1 µA max Input Capacitance 20 20 pF typ REFERENCE INPUT/OUTPUT REFIN Input Voltage Range 2.3/VDD 2.3/VDD V min/max Functional from 1.2 V Input Impedance 150 150 kΩ typ REFOUT Output Voltage 2.3/2.7 2.3/2.7 V min/max REFOUT Tempco 20 20 ppm/°C typ LOGIC INPUTS Input High Voltage, VINH 2.4 2.4 V min AVDD = DVDD = 4.5 V to 5.5 V 2.1 2.1 V min AVDD = DVDD = 3.0 V to 3.6 V CAL Pin 3 3 V min AVDD = DVDD = 4.5 V to 5.5 V 2.4 2.4 V min AVDD = DVDD = 3.0 V to 3.6 V Input Low Voltage, VINL 0.8 0.8 V max AVDD = DVDD = 4.5 V to 5.5 V 0.6 0.6 V max AVDD = DVDD = 3.0 V to 3.6 V Input Current, I ± IN 10 ±10 µA max Typically 10 nA, VIN = 0 V or VDD Input Capacitance, C 4 IN 10 10 pF max LOGIC OUTPUTS Output High Voltage, VOH 4 4 V min AVDD = DVDD = 4.5 V to 5.5 V 2.4 2.4 V min AVDD = DVDD = 3.0 V to 3.6 V Output Low Voltage, VOL 0.4 0.4 V max ISINK = 1.6 mA Floating State Leakage Current ±10 ±10 µA max Floating-State Output Capacitance4 10 10 pF max Output Coding Straight (Natural) Binary Unipolar Input Range 2s Complement Bipolar Input Range –2– REV. A