REV. B
–3–
AD7865
Parameter
A, Y Versions
1
B Version
Unit
Test Conditions/Comments
REFERENCE INPUT/OUTPUT
VREF IN Input Voltage Range
2.375/2.625
VMIN/VMAX
2.5 V
± 5%
VREF IN Input Capacitance
6
10
pF max
VREF OUT Output Voltage
2.5
V nom
VREF OUT Error @ 25
°C
±10
mV max
VREF OUT Error TMIN to TMAX
±20
mV max
VREF OUT Temperature Coefficient
25
ppm/
°C typ
VREF OUT Output Impedance
6
k
typ
See Reference Section
LOGIC INPUTS
Input High Voltage, VINH
2.4
V min
VDD = 5 V
± 5%
Input Low Voltage, VINL
0.8
V max
VDD = 5 V
± 5%
Input Current, IIN
±10
A max
Input Capacitance, CIN
6
10
pF max
LOGIC OUTPUTS
Output High Voltage, VOH
4.0
V min
ISOURCE = 400
A
Output Low Voltage, VOL
0.4
V max
ISINK = 1.6 mA
DB13–DB0
High Impedance
Leakage Current
±10
A max
Capacitance
6
10
pF max
Output Coding
AD7865-1, AD7865-3
Two’s Complement
AD7865-2
Straight (Natural) Binary
CONVERSION RATE
Conversion Time
2.4
s max
For Single Channel
Track/Hold Acquisition Time
2, 3
0.35
s max
Throughput Time
350
kSPS max
For Single Channel
100
kSPS max
For All Four Channels
POWER REQUIREMENTS
VDD
5
V nom
±5% for Specified Performance
IDD
AD7865-1
Typically 23 mA, Logic Inputs = 0 V or VDD
Normal Mode
32
mA max
Standby Mode
20
A max
AD7865-2
Typically 20 mA, Logic Inputs = 0 V or VDD
Normal Mode
30
mA max
Standby Mode
20
A max
AD7865-3
Typically 23 mA, Logic Inputs = 0 V or VDD
Normal Mode
32
mA max
Standby Mode
20
A max
Power Dissipation
AD7865-1
Normal Mode
160
mW max
Typically 115 mW. VDD = 5 V
Standby Mode
100
W max
Typically 15
W
AD7865-2
Normal Mode
150
mW max
Typically 100 mW. VDD = 5 V
Standby Mode
100
W max
Typically 15
W
AD7865-3
Normal Mode
160
mW max
Typically 115 mW. VDD = 5 V
Standby Mode
100
W max
Typically 15
W
NOTES
1Temperature ranges are as follows : A, B Versions: –40
°C to +85°C, Y Version: –40°C to +105°C.
2Performance measured through full channel (SHA and ADC).
3See Terminology.
4Total Harmonic Distortion and Peak Harmonic or Spurious Noise are specified at –83 dBs for the AD7865-2.
5Measured between any two channels with the other two channels grounded.
6Sample tested @ 25
°C to ensure compliance.
Specifications subject to change without notice.