Datasheet

REV. B
–3–
AD7865
Parameter A, Y Versions
1
B Version Unit Test Conditions/Comments
REFERENCE INPUT/OUTPUT
V
REF
IN Input Voltage Range 2.375/2.625 2.375/2.625 V
MIN
/V
MAX
2.5 V ± 5%
V
REF
IN Input Capacitance
6
10 10 pF max
V
REF
OUT Output Voltage 2.5 2.5 V nom
V
REF
OUT Error @ 25°C ± 10 ± 10 mV max
V
REF
OUT Error T
MIN
to T
MAX
± 20 ± 20 mV max
V
REF
OUT Temperature Coefficient 25 25 ppm/°C typ
V
REF
OUT Output Impedance 6 6 kΩ typ See Reference Section
LOGIC INPUTS
Input High Voltage, V
INH
2.4 2.4 V min V
DD
= 5 V ± 5%
Input Low Voltage, V
INL
0.8 0.8 V max V
DD
= 5 V ± 5%
Input Current, I
IN
± 10 ± 10 µA max
Input Capacitance, C
IN
6
10 10 pF max
LOGIC OUTPUTS
Output High Voltage, V
OH
4.0 4.0 V min I
SOURCE
= 400 µA
Output Low Voltage, V
OL
0.4 0.4 V max I
SINK
= 1.6 mA
DB13–DB0
High Impedance
Leakage Current ± 10 ± 10 µA max
Capacitance
6
10 10 pF max
Output Coding
AD7865-1, AD7865-3 Two’s Complement
AD7865-2 Straight (Natural) Binary
CONVERSION RATE
Conversion Time 2.4 2.4 µs max For Single Channel
Track/Hold Acquisition Time
2, 3
0.35 0.35 µs max
Throughput Time 350 350 kSPS max For Single Channel
100 100 kSPS max For All Four Channels
POWER REQUIREMENTS
V
DD
5 5 V nom ± 5% for Specified Performance
I
DD
AD7865-1 Typically 23 mA, Logic Inputs = 0 V or V
DD
Normal Mode 32 32 mA max
Standby Mode 20 20 µA max
AD7865-2 Typically 20 mA, Logic Inputs = 0 V or V
DD
Normal Mode 30 30 mA max
Standby Mode 20 20 µA max
AD7865-3 Typically 23 mA, Logic Inputs = 0 V or V
DD
Normal Mode 32 32 mA max
Standby Mode 20 20 µA max
Power Dissipation
AD7865-1
Normal Mode 160 160 mW max Typically 115 mW. V
DD
= 5 V
Standby Mode 100 100 µW max Typically 15 µW
AD7865-2
Normal Mode 150 150 mW max Typically 100 mW. V
DD
= 5 V
Standby Mode 100 100 µW max Typically 15 µW
AD7865-3
Normal Mode 160 160 mW max Typically 115 mW. V
DD
= 5 V
Standby Mode 100 100 µW max Typically 15 µW
NOTES
1
Temperature ranges are as follows : A, B Versions: –40°C to +85°C, Y Version: –40°C to +105°C.
2
Performance measured through full channel (SHA and ADC).
3
See Terminology.
4
Total Harmonic Distortion and Peak Harmonic or Spurious Noise are specified at –83 dBs for the AD7865-2.
5
Measured between any two channels with the other two channels grounded.
6
Sample tested @ 25°C to ensure compliance.
Specifications subject to change without notice.