Datasheet

REV. 0
Typical Performance Characteristics–AD7738
–11–
FILTER WORD
25
16
1102
NO MISSING CODES
3456789
24
20
18
17
23
22
19
21
CHOP = 1
TPC 1. No Missing Codes Performance, Chopping Enabled
FILTER WORD
25
16
1102
NO MISSING CODES
3456789
24
20
18
17
23
22
19
21
CHOP = 0
TPC 2. No Missing Codes Performance, Chopping Disabled
INPUT FREQUENCY
0
–180
0 1400200
GAIN – dB
400 600 800 1000 1200
–20
–100
–140
–160
–40
–60
–120
–80
THD = 115dB
TPC 3. Typical FFT Plot; Input Sinewave 183 Hz,
1.2 V Peak, Range
± 1.25 V, Conversion Time
394
µ s, Chopping Enabled
VA LU E
140
0
–80 80–60
NUMBER OF CODES
–40 –20 0 20 40
120
40
100
80
20
60
EFFECTIVE RES. 19.9 BITS
P-P RES. 17.0 BITS
60
TPC 4. Typical Histogram; Analog Inputs Shorted;
Range
± 2.5 V, Conversion Time 394 µ s;
Chopping Enabled