Datasheet

AD7328 Data Sheet
Rev. C | Page 4 of 36
B Version
Parameter
1
Min Typ Max Unit Test Conditions/Comments
Differential Nonlinearity
2
−0.9/+1.5 LSB Differential mode; guaranteed no missing codes to
13 bits
±0.9 LSB Single-ended mode; guaranteed no missing codes to
12 bits
−0.7/+1 LSB Single-ended/pseudo differential mode (LSB = FSR/8192)
Offset Error
2, 5
−4/+9 LSB Single-ended/pseudo differential mode
−7/+10 LSB Differential mode
Offset Error Match
2, 5
±0.6 LSB Single-ended/pseudo differential mode
±0.5 LSB Differential mode
Gain Error
2, 5
±8 LSB Single-ended/pseudo differential mode
±14 LSB Differential mode
Gain Error Match
2, 5
±0.5 LSB Single-ended/pseudo differential mode
±0.5 LSB Differential mode
Positive Full-Scale Error
2, 6
±4 LSB Single-ended/pseudo differential mode
±7
LSB
Differential mode
Positive Full-Scale Error Match
2, 6
±0.5 LSB Single-ended/pseudo differential mode
±0.5 LSB Differential mode
Bipolar Zero Code Error
2, 6
±8.5 LSB Single-ended/pseudo differential mode
±7.5 LSB Differential mode
Bipolar Zero Code Error Match
2, 6
±0.5 LSB Single-ended/pseudo differential mode
±0.5 LSB Differential mode
Negative Full-Scale Error
2, 6
±4 LSB Single-ended/pseudo differential mode
±6 LSB Differential mode
Negative Full-Scale Error Match
2, 6
±0.5 LSB Single-ended/pseudo differential mode
±0.5 LSB Differential mode
ANALOG INPUT
Input Voltage Ranges Reference = 2.5 V; see Table 6
(Programmed via Range Register) ±10 V V
DD
= 10 V min, V
SS
= −10 V min, V
CC
= 2.7 V to 5.25 V
±5 V V
DD
= 5 V min, V
SS
= −5 V min, V
CC
= 2.7 V to 5.25 V
±2.5 V V
DD
= 5 V min, V
SS
= − 5 V min, V
CC
= 2.7 V to 5.25 V
0 to 10 V V
DD
= 10 V min, V
SS
= AGND min, V
CC
= 2.7 V to 5.25 V
Pseudo Differential V
IN
(−)
Input Range
V
DD
= 16.5 V, V
SS
= −16.5 V, V
CC
= 5 V; see Figure 40 and
Figure 41
±3.5 V Reference = 2.5 V; range = ±10 V
±6 V Reference = 2.5 V; range = ±5 V
±5 V Reference = 2.5 V; range = ±2.5 V
+3/−5 V Reference = 2.5 V; range = 0 V to +10 V
DC Leakage Current ±200 nA V
IN
= V
DD
or V
SS
Input Capacitance
3
13.5 pF When in track, ±10 V range
16.5 pF When in track, ±5 V and 0 V to +10 V ranges
21.5 pF When in track, ±2.5 V range
3 pF When in hold, all ranges
REFERENCE INPUT/OUTPUT
Input Voltage Range 2.5 3 V
Input DC Leakage Current ±1 µA
Input Capacitance 10 pF
Reference Output Voltage 2.5 V
Long Term Stability 150 ppm For 1000 hours
Output Voltage Hysteresis 50 ppm
Reference Output Voltage Error
at 25°C
±5 mV
Reference Output Voltage
T
MIN
to T
MAX
±10 mV
Reference Temperature Coefficient 25 ppm/°C
6 ppm/°C
Reference Output Impedance 7 Ω