Datasheet

AD7327 Data Sheet
Rev. B | Page 4 of 36
B Version
Parameter
1
Min Typ Max Unit Test Conditions/Comments
DC ACCURACY
4
Single-ended/pseudo differential mode 1 LSB =
FSR/4096, unless otherwise noted.
Differential mode 1 LSB = FSR/8192, unless otherwise
noted.
Resolution 13 Bits
No Missing Codes
12-bit
plus sign
(13 bits)
Bits Differential mode
11-bit
plus sign
(12 bits)
Bits Single-ended/pseudo differential mode
Integral Nonlinearity
2
±1.1 LSB Differential mode; V
CC
= 3 V to 5.25 V, typ for V
CC
= 2.7 V
±1 LSB
Single-ended/pseudo differential mode, V
CC
= 3 V to
5.25 V, typ for V
CC
= 2.7 V
−0.7/+1.2
LSB
Single-ended/pseudo differential mode
(LSB = FSR/8192)
Differential Nonlinearity
2
−0.9/+1.2 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 Error
2, 6
±8.5 LSB Single-ended/pseudo differential mode
±7.5 LSB Differential mode
Bipolar Zero 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
Registers)
±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