
AD684–SPECIFICATIONS (T
MIN to TMAX with VCC = +12 V
10%, VEE = –12 V
10%, unless otherwise noted)
AD684J
AD684A
AD684S
Parameter
Min
Typ
Max
Min
Typ
Max
Min
Typ
Max
Units
SAMPLING CHARACTERISTICS
Acquisition Time
10 V Step to 0.01%
0.75
1.0
0.75
1.0
0.75
1.0
s
10 V Step to 0.1%
0.5
0.6
0.5
0.6
0.5
0.6
s
Small Signal Bandwidth
4
MHz
Full Power Bandwidth
1
MHz
HOLD CHARACTERISTICS
Effective Aperture Delay
–35
–25
–15
–35
–25
–15
–35
–25
–15
ns
Aperture Jitter
50
75
50
75
50
75
ps
Hold Settling Time (to 1 mV)
250
500
250
500
250
500
ns
Droop Rate
l
0.01
1
0.01
1
0.01
1
V/s
Feedthrough
(VIN = ± 5 V, 100 kHz)
–90
dB
ACCURACY CHARACTERISTICS
1
Hold Mode Offset
–4
–1
+3
–4
1
+3
–4
–1
+3
mV
Hold Mode Offset Drift
10
V/°C
Sample Mode Offset
50
200
50
200
50
200
mV
Nonlinearity
±0.002 ±0.003
±0.002
±0.003
±0.003 ±0.005
% FS
Gain Error
±0.03
0.05
±0.03
0.05
±0.03
0.05
% FS
INTERCHANNEL CHARACTERISTICS
Interchannel Isolation
(VIN = ± 5 V, 100 kHz)
80
86
80
86
80
86
dB
Interchannel Aperture Offset
150
300
150
300
150
300
ps
Interchannel Offset
0.4
1.5
0.4
2.0
0.4
2.0
mV
OUTPUT CHARACTERISTICS
Output Drive Current
2
–5
+5
–5
+5
–5
+5
mA
Output Resistance, dc
0.3
0.5
0.3
0.5
0.3
0.5
Total Output Noise
(dc to 5 MHz)
150
V rms
Sampled dc Uncertainty
85
V rms
Hold Mode Noise
(dc to 5 MHz)
125
V rms
Short Circuit Current
3
Source
20
mA
Sink
10
mA
INPUT CHARACTERISTICS
Input Voltage Range
–5
+5
–5
+5
–5
+5
V
Bias Current
4
100
250
100
250
100
250
nA
400
500
nA
Input Impedance
50
M
Input Capacitance
2
pF
DIGITAL CHARACTERISTICS
Input Voltage Low
0.8
V
Input Voltage High
2.0
V
Input Current (VIN = 5 V)
2
10
2
10
2
10
A
POWER SUPPLY CHARACTERISTICS
Operating Voltage Range (VCC, VEE)
±10.8
±12
±13.2
±10.8 ±12
±13.2
±10.8
±12
±13.2
V
Supply Current
18
25
18
25
18
26
mA
+PSRR
65
70
65
70
65
70
dB
–PSRR
60
65
60
65
60
65
dB
Power Consumption
430
600
430
600
430
625
mW
TEMPERATURE RANGE
Specified Performance
0
+70
–40
+85
–55
+125
°C
PACKAGE OPTIONS
16-Pin Cerdip (Q)
AD684JQ
AD684AQ
AD684SQ
NOTES
1Specified and tested over an input range of
±5 V.
2Maximum current the AD684 can source (or sink). Testing guarantees that the accuracy of the held signal remains within 2.5 mV of its initial value.
3The output is protected for a short circuit to common, V
CC and VEE .
4V
CC and VEE at nominal voltage levels.
Specifications shown in boldface are tested on all production units at final electrical test. Results from those tests are used to calculate outgoing quality levels. All min and max
specifications are guaranteed, although only those shown in boldface are tested on all production units.
Specifications subject to change without notice.
REV. A
–2–