Datasheet AD1555, AD1556 (Analog Devices) - 4

AD1555/AD1556 Table I. Dynamic and Noise Typical Performances Input and Gain MODIN PGA = 1 (0 dB) PGA = 2.5 (8 dB) PGA = 8.5 (19 dB) PGA = 34 (31 dB) PGA = 128 (42 dB)
Input Range 1.6 V rms 1.6 V rms 636 mV rms 187 mV rms 47 mV rms 12.4 mV rms Dynamic Range FO = 16 kHz (1/16 ms) 40 dB 40 dB 40 dB 40 dB 40 dB 40 dB FO = 8 kHz (1/8 ms) 69 dB 69 dB 69 dB 69 dB 69 dB 69 dB FO = 4 kHz (1/4 ms) 98 dB 98 dB 98 dB 98 dB 97 dB 91 dB FO = 2 kHz (1/2 ms) 117 dB 117 dB 116.5 dB 114.5 dB 106.5 dB 95 dB FO = 1 kHz (1 ms) 120 dB 120 dB 119.5 dB 117.5 dB 109.5 dB 98 dB FO = 500 Hz (2 ms) 123 dB 123 dB 122.5 dB 120 dB 112.5 dB 101 dB FO = 250 Hz (4 ms) 126 dB 126 dB 125.5 dB 123 dB 115.5 dB 104 dB Equivalent Input Noise FO = 16 kHz (1/16 ms) 15.5 mV rms 15.5 mV rms 6.17 mV rms 1.84 mV rms 470 µV rms 138 µV rms FO = 8 kHz (1/8 ms) 560 µV rms 560 µV rms 220 µV rms 65.5 µV rms 16.4 µV rms 4.5 µV rms FO = 4 kHz (1/4 ms) 20 µV rms 20 µV rms 8 µV rms 2.36 µV rms 661 nV rms 351 nV rms FO = 2 kHz (1/2 ms) 2.25 µV rms 2.25 µV rms 952 nV rms 353 nV rms 225 nV rms 223 nV rms FO = 1 kHz (1 ms) 1.59 µV rms 1.59 µV rms 674 nV rms 250 nV rms 159 nV rms 159 nV rms FO = 500 Hz (2 ms) 1.13 µV rms 1.13 µV rms 477 nV rms 187 nV rms 113 nV rms 111 nV rms FO = 250 Hz (4 ms) 797 nV rms 797 nV rms 338 nV rms 133 nV rms 80 nV rms 79 nV rms
Table Ia. Minimum Dynamic Performances (AD1555AP Only)* Input and Gain MODIN PGA = 1 (0 dB) PGA = 2.5 (8 dB) PGA = 8.5 (19 dB) PGA = 34 (31 dB)
FO = 1 kHz (1 ms) 116 116 115.5 114 104.5 FO = 500 Hz (2 ms) 119 119 118.5 117 107.5 FO = 250 Hz (4 ms) 122 122 121.5 120 110.5 *Not tested in production. Guaranteed by design.
Table Ib. Minimum Dynamic Performances (AD1555BP Only)* Input and Gain MODIN PGA = 1 (0 dB) PGA = 2.5 (8 dB) PGA = 8.5 (19 dB) PGA = 34 (31 dB)
FO = 1 kHz (1 ms) 116.5 116.5 116 114 104.5 FO = 500 Hz (2 ms) 119.5 119.5 119 117 107.5 FO = 250 Hz (4 ms) 122.5 122.5 121 120 110.5 *Not tested in production. Guaranteed by design.
Table II. Filter Characteristics Output Word Rate FO Pass Band –3 dB Frequency Stop Band Group Delay (Sampling Rate in ms) (Hz) (Hz) (Hz) (ms)
16000 Hz (1/16 ms) 6000 6480 8000 0.984 8000 Hz (1/8 ms) 3000 3267.5 4000 3 4000 Hz (1/4 ms) 1500 1634 2000 6 2000 Hz (1/2 ms) 750 816.9 1000 12 1000 Hz (1 ms) 375 408.5 500 24 500 Hz (2 ms) 187.5 204.2 250 48 250 Hz (4 ms) 93.75 101.4 125 93 –4– REV. B