AD7322 Analog Devices, AD7322 Datasheet - Page 4

• Manufacturer Part Number: AD7322
• Description: Software Selectable True Bipolar Input, 2-Channel, 12-Bit Plus Sign ADC
• Manufacturer: Analog Devices

Specifications of AD7322

• Resolution (bits): 13bit
• # Chan: 2
• Sample Rate: 1MSPS
• Interface: Ser,SPI
• Analog Input Type: Diff-Bip,Diff-Uni,SE-Uni
• Ain Range: Bip (Vref),Bip (Vref) x 2,Bip (Vref) x 4,Bip 10V,Bip 2.5V,Bip 5.0V,Uni (Vref) x 4,Uni 10V
• Adc Architecture: SAR
• Pkg Type: SOP

AD7322
Parameter
ANALOG INPUT
REFERENCE INPUT/OUTPUT
Differential Nonlinearity
Offset Error
Offset Error Match
Gain Error
Gain Error Match
Positive Full-Scale Error
Positive Full-Scale Error Match
Bipolar Zero Error
Bipolar Zero Error Match
Negative Full-Scale Error
Negative Full-Scale Error Match
Input Voltage Ranges
DC Leakage Current
Input Capacitance
Input Voltage Range
Input DC Leakage Current
Input Capacitance
Reference Output Voltage
Reference Output Voltage Error at
Reference Output Voltage
Reference Temperature Coefficient
Reference Output Impedance
(Programmed via Range Register)
Pseudo Differential V
25°C
T
MIN
Range
to T
1
2, 4
MAX
2, 4
2, 4
2, 5
2, 4
3
2, 5
IN
2
2, 5
2, 5
(−) Input
2, 5
2, 5
Min
2.5
B Version
Typ
−0.7/+1
±10
±5
±2.5
0 to 10
±3.5
±6
±5
+3/−5
3
13.5
16.5
21.5
3
10
2.5
3
7
Rev. A | Page 4 of 36
Max
−0.9/+1.5
±0.9
−4/+9
−7/+10
±0.6
±0.5
±8
±14
±0.5
±0.5
±4
±7
±0.5
±0.5
±8.5
±7.5
±0.5
±0.5
±4
±6
±0.5
±0.5
±80
3
±1
±5
±10
25
Unit
LSB
LSB
LSB
LSB
LSB
LSB
LSB
LSB
LSB
LSB
LSB
LSB
LSB
LSB
LSB
LSB
LSB
LSB
LSB
LSB
LSB
LSB
LSB
V
V
V
V
V
V
V
V
nA
nA
pF
pF
pF
pF
V
μA
pF
V
mV
mV
ppm/°C
Ω
Test Conditions/Comments
Differential mode; guaranteed no missing codes to
13 bits
Single-ended mode; guaranteed no missing codes
to 12 bits
Single-ended/pseudo differential mode
(LSB = FSR/8192)
Single-ended/pseudo differential mode
Single-ended/pseudo differential mode
Differential mode
Single-ended/pseudo differential mode
Differential mode
Single-ended/pseudo differential mode
Differential mode
Single-ended/pseudo differential mode
Differential mode
Single-ended/pseudo differential mode
Differential mode
Single-ended/pseudo differential mode
Differential mode
Single-ended/pseudo differential mode
Differential mode
Single-ended/pseudo differential mode
Differential mode
Single-ended/pseudo differential mode
Differential mode
Reference = 2.5 V; see Table 6
V
V
V
V
V
and Figure 41
Reference = 2.5 V; range = ±10 V
Reference = 2.5 V; range = ±5 V
Reference = 2.5 V; range = ±2.5 V
Reference = 2.5 V; range = 0 V to +10 V
V
Per channel, V
When in track, ±10 V range
When in track, ±5 V and 0 V to +10 V range
When in track, ±2.5 V range
When in hold, all ranges
Differential mode
DD
DD
DD
DD
DD
IN
= V
= 10 V min, V
= 5 V min, V
= 5 V min, V
= 10 V min, V
= 16.5 V, V
DD
or V
SS
SS
IN
SS
SS
= V
= −16.5 V, V
SS
SS
= −5 V min, V
= − 5 V min, V
= −10 V min, V
= AGND min, V
DD
or V
SS
CC
= 5 V; see Figure 40
CC
CC
= 2.7 V to 5.25 V
CC
= 2.7 V to 5.25 V
CC
= 2.7 V to 5.25 V
= 2.7 V to 5.25 V