Datasheet AD1555, AD1556 (Analog Devices) - 2

AD1555/AD1556 AD1555–SPECIFICATIONS (+VA = +5 V; –VA = –5 V; VL = 5 V; AGND = DGND = 0 V; MCLK = 256 kHz; TA = TMIN to TMAX, unless otherwise noted.) AD1555BP AD1555AP Parameter Notes Min Typ Max Min Typ Max Unit
PGA Gain Settings 1, 2.5, 8.5, 34, 128 AC ACCURACY Dynamic Range1 PGA Gain of 1 116.5 120 116 120 dB PGA Gain of 2.5 116 119.5 115.5 119.5 dB PGA Gain of 8.5 114 117.5 114 117.5 dB PGA Gain of 34 104.5 109.5 104.5 109.5 dB PGA Gain of 128 98 98 dB Total Harmonic Distortion2 PGA Gain of 1 –120 –111 –120 –107 dB PGA Gain of 2.5 –116 –108 –116 –107 dB PGA Gain of 8.5 –116 –106 –116 –105 dB PGA Gain of 34 –115 –101 –115 –101 dB PGA Gain of 128 –108 –108 dB Jitter Tolerance3 300 300 ps Intermodulation Distortion4 PGA Gain of 1 122 122 dB DC ACCURACY Absolute Gain Error5 PGA Gain of 1, 2.5 –3.5 +3.5 –3.5 +3.5 % PGA Gain of 8.5 –4.5 +4.5 –4.5 +4.5 % PGA Gain of 34 –10 +10 –10 +10 % Gain Stability Over Temperature5 ±15 ±15 ppm/°C Offset5, 6 All PGA Gain –60 –60 mV Offset Drift5, 6 6 6 µV/°C ANALOG INPUT Full-Scale Nondifferential Input MODIN ±2.25 ±2.25 V Input Impedance MODIN 20 20 k⍀ Full-Scale Differential Input PGA Gain of 1 ±2.25 ±2.25 V Other PGA Gain Settings See Table I See Table I Differential Input Impedance AIN, TIN Inputs 140 140 MΩ Common-Mode Range ±2.25 ±2.25 V Common-Mode Rejection Ratio VCM = ±2.25 V, fIN = 200 Hz PGA Gain of 1 93 101 91 101 dB PGA Gain of 2.5 95 102 91.5 102 dB PGA Gain of 8.5, 34 95.5 108 94.5 108 dB PGA Gain of 128 108 108 dB Power Supply Rejection Ratio7 50 50 dB AIN to TIN Crosstalk Isolation fIN = 200 Hz 130 130 dB Differential Input Current 130 130 nA TEMPERATURE RANGE8 Specified Performance TMIN to TMAX –55 +85 0 85 °C REFERENCE INPUT9 Input Voltage Range 2.990 3.0 3.010 2.990 3.0 3.010 V Input Current 130 130 µA DIGITAL INPUTS OUTPUTS VIL –0.3 +0.8 –0.3 +0.8 V VIH 2.0 VL + 0.3 2.0 VL + 0.3 V IIL –10 +10 –10 +10 µA IIH –10 +10 –10 +10 µA VOL ISINK = +2 mA 0.4 0.4 V VOH ISOURCE = –2 mA 2.4 2.4 V –2– REV. B