AD7874–SPECIFICATIONS
Parameter
SAMPLE-AND-HOLD
Acquisition Time
2
to 0.01%
Droop Rate
2, 3
–3 dB Small Signal Bandwidth
3
Aperture Delay
2
Aperture Jitter
2, 3
Aperture Delay Matching
2
SAMPLE-AND-HOLD AND ADC
DYNAMIC PERFORMANCE
Signal-to-Noise Ratio
Total Harmonic Distortion
Peak Harmonic or Spurious Noise
Intermodulation Distortion
2nd Order Terms
3rd Order Terms
Channel-to-Channel Isolation
2
DC ACCURACY
Resolution
Relative Accuracy
Differential Nonlinearity
Positive Full-Scale Error
4
Negative Full-Scale Error
4
Full-Scale Error Match
Bipolar Zero Error
Bipolar Zero Error Match
ANALOG INPUTS
Input Voltage Range
Input Current
REFERENCE OUTPUTS
REF OUT
REF OUT Error @ +25°C
T
MIN
to T
MAX
REF OUT Temperature Coefficient
Reference Load Change
REFERENCE INPUT
Input Voltage Range
Input Current
Input Capacitance
3
LOGIC INPUTS
Input High Voltage, V
INH
Input Low Voltage, V
INL
Input Current, I
IN
Input Capacitance, C
IN3
LOGIC OUTPUTS
Output High Voltage, V
OH
Output Low Voltage, V
OL
DB0–DB11
Floating-State Leakage Current
Floating-State Output Capacitance
Output Coding
POWER REQUIREMENTS
V
DD
V
SS
I
DD
I
SS
Power Dissipation
2
1
500
0
40
200
4
2
1
500
0
40
200
4
(V
DD
= +5 V, V
SS
= –5 V, AGND = DGND = 0 V, REF IN = +3 V, f
CLK
= 2.5 MHz
external. All specifications T
MIN
to T
MAX
unless otherwise noted.)
Test Conditions/Comments
A Version B Version S Version Units
2
2
500
0
40
200
4
µs
max
mV/ms max
kHz typ
ns min
ns max
ps typ
ns max
V
IN
= 500 mV p-p
70
–78
–78
–80
–80
–80
12
±
1
±
1
±
5
±
5
5
±
5
4
±
10
±
600
3
±
0.33
±
1
±
35
±
1
71
–80
–80
–80
–80
–80
12
±
1/2
±
1
±
5
±
5
5
±
5
4
±
10
±
600
3
±
0.33
±
1
±
35
±
1
70
–78
–78
–80
–80
–80
12
±
1
±
1
±
5
±
5
5
±
5
4
±
10
±
600
3
±
0.33
±
1
±
35
±
2
dB min
dB max
dB max
dB max
dB max
dB max
Bits
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
Volts
µA
max
V nom
% max
% max
ppm/°C typ
mV max
f
IN
= 10 kHz Sine Wave, f
SAMPLE
= 29 kHz
f
IN
= 10 kHz Sine Wave, f
SAMPLE
= 29 kHz
f
IN
= 10 kHz Sine Wave, f
SAMPLE
= 29 kHz
fa = 9 kHz, fb = 9.5 kHz, f
SAMPLE
= 29 kHz
No Missing Codes Guaranteed
Any Channel
Any Channel
Between Channels
Any Channel
Between Channels
Reference Load Current Change (0–500
µA)
Reference Load Should Not Be Changed During Conversion
2.85/3.15
±
1
10
2.4
0.8
±
10
10
4.0
0.4
±
10
10
2.85/3.15
±
1
10
2.4
0.8
±
10
10
4.0
0.4
2.85/3.15
±
1
10
2.4
0.8
±
10
10
4.0
0.4
V min/V max 3 V
±
5%
µA
max
pF max
V min
V max
µA
max
pF max
V min
V max
µA
max
pF max
V
DD
= 5 V
±
5%
V
DD
= 5 V
±
5%
V
IN
= 0 V to V
DD
V
DD
= 5 V
±
5%; I
SOURCE
= 40
µA
V
DD
= 5 V
±
5%; I
SINK
= 1–6 mA
V
IN
= 0 V to V
DD
±
10
±
10
10
10
2s COMPLEMENT
+5
–5
18
12
150
+5
–5
18
12
150
+5
–5
18
12
150
V nom
V nom
mA max
mA max
mW max
±
5% for Specified Performance
±
5% for Specified Performance
CS
=
RD
=
CONVST
= +5 V; Typically 12 mA
CS
=
RD
=
CONVST
= +5 V; Typically 8 mA
CS
=
RD
=
CONVST
= +5 V; Typically 100 mW
NOTES
1
Temperature ranges are as follows: A, B Versions: –40°C to +85°C; S Version: –55°C to +125°C.
2
See Terminology.
3
Sample tested @ +25°C to ensure compliance.
4
Measured with respect to the REF IN voltage and includes bipolar offset error.
5
For capacitive loads greater than 50 pF a series resistor is required.
Specifications subject to change without notice.
–2–
REV. C
AD [ ANALOG DEVICES ]
