AD7896–SPECIFICATIONS
Parameter
DYNAMIC PERFORMANCE
2
Signal to (Noise + Distortion) Ratio
3
@ +25°C
T
MIN
to T
MAX
Total Harmonic Distortion (THD)
3
Peak Harmonic or Spurious Noise
3
Intermodulation Distortion (IMD)
3
2nd Order Terms
3rd Order Terms
DC ACCURACY
Resolution
Minimum Resolution for which No
Missing Codes are Guaranteed
Relative Accuracy
3
Differential Nonlinearity
3
Positive Full-Scale Error
3
Unipolar Offset Error
70
–80
–80
–80
–80
70
70
–80
–80
–80
–80
(V
DD
= +2.7 V to +5.5 V, AGND = DGND = 0 V. All specifications T
MIN
to T
MAX
unless otherwise noted)
J
Version
S
Version
Units
Test Conditions/Comments
A
B
Versions
1
Versions
70 typ
–80 typ
–80 typ
–80 typ
–80 typ
70
–80
dB min
dB min
dB max
dB max
dB max
dB max
f
IN
=10 kHz Sine Wave, f
SAMPLE
= 100 kHz
f
IN
= 10 kHz Sine Wave, f
SAMPLE
= 100 kHz
f
IN
= 10 kHz Sine Wave, f
SAMPLE
= 100 kHz
fa = 9 kHz, fb = 9.5 kHz, f
SAMPLE
= 100 kHz
–80
–80
12
12
±
1
±
1
±
3
±
4
±
4
12
12
±
1/2
±
1
±
1.5
±
4
±
3
12
12
±
1
±
1
±
3
±
5
±
5
12
12
±
1
±
1
±
3
±
4
±
4
Bits
Bits
LSB max
LSB max
LSB max
LSB max
LSB max
V
DD
= 5 V
±
10%
V
DD
= 2.7 V to 3.6 V
ANALOG INPUT
Input Voltage Range
Input Current
LOGIC INPUTS
Input High Voltage, V
INH
Input Low Voltage, V
INL
Input Current, I
IN
Input Capacitance, C
IN4
LOGIC OUTPUTS
Output High Voltage, V
OH
Output Low Voltage, V
OL
Output Coding
CONVERSION RATE
Conversion Time:
Mode 1 Operation
Mode 2 Operation
5
Track/Hold Acquisition Time
3
POWER REQUIREMENTS
V
DD
I
DD
0 to +V
DD
0 to +V
DD
0 to +V
DD
0 to +V
DD
Volts
±
2
±
2
±
2
±
5
µA
max
2.0
2.4
0.8
±
10
10
2.0
2.4
0.8
±
10
10
2.0
2.4
0.8
±
10
10
2.0
2.4
0.8
±
10
10
V min
V max
µA
max
pF max
V
DD
= 2.7 V to 3.6 V
V
DD
= 5 V
±
10%
V
IN
= 0 V to V
DD
2.4
0.4
2.4
2.4
0.4
0.4
Straight (Natural) Binary
2.4
0.4
V min
V max
I
SOURCE
= 2 mA
I
SINK
= 2 mA
8
14
1.5
8
14
1.5
8
14
1.5
8.5
14.5
1.5
µs
max
µs
max
µs
max
Power Dissipation
Power-Down Mode
I
DD
@ +25°C
T
MIN
to T
MAX
I
DD
@ +25°C
T
MIN
to T
MAX
Power Dissipation @ +25°C
+2.7/+5.5 +2.7/+5.5 +2.7/+5.5 +2.7/+5.5 V min/max
4
4
4
4
mA max Digital Input @ DGND, V
DD
= 2.7 V to
3.6 V
5
5
5
5
mA max Digital Inputs @ DGND, V
DD
= 5 V
±
10%
10.8
10.8
10.8
10.8
mW max V
DD
= 2.7 V, Typically 9 mW
Digital Inputs @ DGND
5
5
5
µA
typ 5
µA
max
V
DD
= 2.7 V to 3.6 V
15
15
75
75
µA
max
V
DD
= 2.7 V to 3.6 V
50
50
50
50
µA
max
V
DD
= 5 V
±
10%
150
150
500
500
µA
max
V
DD
= 5 V
±
10%
13.5
13.5
13.5
13.5
µW
max
V
DD
= 2.7 V
NOTES
1
Temperature ranges are as follows: A, B Versions: –40°C to +85°C; J Version: 0°C to +70°C; S Version: –55°C to +125°C.
2
Applies to Mode 1 operation. See section on operating modes.
3
See Terminology.
4
Sample tested @ +25°C to ensure compliance.
5
This 14
µs
includes the “wake-up” time from standby. This “wake-up” time is timed from the rising edge of
CONVST,
whereas conversion is timed from the
falling edge of
CONVST,
for narrow
CONVST
pulse width the conversion time is effectively the “wake-up” time plus conversion time hence 14
µs.
This can be
seen from Figure 3. Note that if the
CONVST
pulse width is greater than 6
µs
then the effective conversion time will increase beyond 14
µs.
Specifications subject to change without notice.
–2–
REV. B
AD [ ANALOG DEVICES ]
