AD7864 Analog Devices, AD7864 Datasheet - Page 4

• Manufacturer Part Number: AD7864
• Description: High Speed, Low Power, 4-channel Simultaneous Sampling, 12-Bit ADC
• Manufacturer: Analog Devices

Specifications of AD7864

• Resolution (bits): 12bit
• # Chan: 4
• Sample Rate: 520kSPS
• Interface: Par
• Analog Input Type: SE-Bip,SE-Uni
• Ain Range: Bip 10V,Bip 2.5V,Bip 5.0V,Uni 2.5V,Uni 5.0V
• Adc Architecture: SAR
• Pkg Type: QFP

AD7864
Parameter
REFERENCE INPUT/OUTPUT
LOGIC INPUTS
LOGIC OUTPUTS
CONVERSION RATE
POWER REQUIREMENTS
1
2
3
4
Temperature ranges are as follows: A, B versions: –40°C to +85°C. The A version is fully specified up to 105°C with a maximum sample rate of 450 kSPS and I
maximum (normal mode) of 26 mA.
Performance is measured through the full channel (SHA and ADC).
See the Terminology section.
Sample tested at initial release to ensure compliance.
AD7864-2
V
V
V
V
V
V
V
Input High Voltage, V
Input Low Voltage, V
Input Current, I
Input Capacitance, C
Output High Voltage, V
Output Low Voltage, V
DB11 to DB0
Output Coding
Conversion Time
Track-And-Hold Acquisition Time
Throughput Time
V
I
Power Dissipation
DD
REF
REF
REF
REF
REF
REF
REF
DD
Input Voltage Range
Input Current (0 V to 2.5 V Option)
Input Resistance (0 V to 5 V Option)
High Impedance
AD7864-1, AD7864-3
AD7864-2
Normal Mode
Standby Mode
Normal Mode
Standby Mode
In Input Voltage Range
In Input Capacitance
Out Output Voltage
Out Error @ 25°C
Out Error T
Out Temperature Coefficient
Out Output Impedance
Leakage Current
Capacitance
MIN
IN
4
to T
INL
IN
INH
MAX
4
OL
OH
4
2, 3
A Version
0 to 2.5, 0 to 5
±100
9
2.375/2.625
10
2.5
±10
±20
25
6
2.4
0.8
±10
10
4.0
0.4
±10
10
1.65
0.35
130
5
24
20
120
100
Straight (natural) binary
Twos complement
1
B Version
0 to 2.5, 0 to 5
±100
9
2.375/2.625
10
2.5
±10
±20
25
6
2.4
0.8
±10
10
4.0
0.4
±10
10
1.65
0.35
130
5
24
20
120
100
Rev. D | Page 4 of 28
Unit
V
nA max
kΩ min
V
pF max
V nom
mV max
mV max
ppm/°C typ
kΩ typ
V min
V max
μA max
pF max
V min
V max
μA max
pF max
μs max
μs max
kSPS max
V nom
mA max
μA max
mW max
μW max
MIN
/V
MAX
Typically 20 μW
Test Conditions/Comments
2.5 V ± 5%
See the Reference section
V
V
I
I
For one channel
For all four channels
±5% for specified performance
5 μA typical, logic inputs = 0 V or V
Typically 4 μA
Typically 90 mW
SOURCE
SINK
DD
DD
= 5 V ± 5%
= 5 V ± 5%
= 1.6 mA
= 400 μA
DD
DD