(@ +25؇C, and ؎15 V dc unless otherwise noted)
AD637–SPECIFICATIONS
AD637J/A
AD637K/B
AD637S
Typ
Model
Min
Typ
Max
Min
Typ
Max
Min
Max
Units
2
2
2
TRANSFER FUNCTION
VOUT
=
avg . (VIN
)
VOUT
=
avg . (VIN
)
VOUT
=
avg . (VIN )
CONVERSION ACCURACY
Total Error, Internal Trim1 (Fig. 2)
؎1 ؎ 0.5
؎3.0 ؎ 0.6
150
؎0.5 ؎ 0.2
؎2.0 ؎ 0.3
150
؎1 ؎ 0.5 mV ± % of Reading
؎6 ؎ 0.7 mV ± % of Reading
T
MIN to TMAX
vs. Supply, + VIN = +300 mV
vs. Supply, – VIN = –300 mV
DC Reversal Error at 2 V
30
100
30
100
30
100
150
µV/V
300
300
300
µV/V
0.25
0.04
0.05
0.1
0.02
0.25
0.04
0.05
% of Reading
% of FSR
% of FSR
mV ± % of Reading
Nonlinearity 2 V Full Scale2
Nonlinearity 7 V Full Scale
Total Error, External Trim
0.05
± 0.25 ± 0.05
±0.5 ± 0.1
± 0.5 ± 0.1
ERROR VS. CREST FACTOR3
Crest Factor 1 to 2
Crest Factor = 3
Specified Accuracy
Specified Accuracy
Specified Accuracy
±0.1
±1.0
± 0.1
± 1.0
± 0.1
± 1.0
% of Reading
% of Reading
Crest Factor = 10
AVERAGING TIME CONSTANT
25
25
25
ms/µF CAV
INPUT CHARACTERISTICS
Signal Range, ±15 V Supply
Continuous RMS Level
Peak Transient Input
Signal Range, ±5 V Supply
Continuous rms Level
0 to 7
0 to 4
0 to 7
0 to 4
0 to 7
V rms
V p-p
±15
±6
± 15
± 6
± 15
0 to 4
V rms
V p-p
Peak Transient Input
± 6
Maximum Continuous Nondestructive
Input Level (All Supply Voltages)
Input Resistance
±15
9.6
±0.5
± 15
9.6
± 0.2
± 15
9.6
± 0.5
V p-p
kΩ
mV
6.4
8
6.4
8
6.4
8
Input Offset Voltage
FREQUENCY RESPONSE4
Bandwidth for 1% Additional Error (0.09 dB)
V
V
V
IN = 20 mV
IN = 200 mV
IN = 2 V
11
66
200
11
66
200
11
66
200
kHz
kHz
kHz
±3 dB Bandwidth
V
V
IN = 20 mV
IN = 200 mV
150
1
8
150
1
8
150
1
8
kHz
MHz
MHz
VIN = 2 V
OUTPUT CHARACTERISTICS
Offset Voltage
؎1
؎0.089
؎0.5
؎0.056
؎1
؎0.07
mV
mV/°C
vs. Temperature
±0.05
± 0.04
± 0.04
Voltage Swing, ±15 V Supply,
2 kΩ Load
0 to +12.0 +13.5
0 to +12.0 +13.5
0 to +12.0 +13.5
V
Voltage Swing, ±3 V Supply,
2 kΩ Load
Output Current
Short Circuit Current
Resistance, Chip Select “High”
Resistance, Chip Select “Low”
0 to +2
6
+2.2
0 to +2
6
+2.2
0 to +2
6
+2.2
V
mA
mA
Ω
20
0.5
100
20
0.5
100
20
0.5
100
kΩ
dB OUTPUT
Error, VIN 7 mV to 7 V rms, 0 dB = 1 V rms
Scale Factor
±0.5
–3
± 0.3
–3
± 0.5
–3
dB
mV/dB
Scale Factor Temperature Coefficient
+0.33
–0.033
20
+0.33
–0.033
20
+0.33
–0.033
20
% of Reading/°C
dB/°C
µA
I
REF for 0 dB = 1 V rms
5
1
80
100
5
1
80
100
5
1
80
100
IREF Range
µA
BUFFER AMPLIFIER
Input Output Voltage Range
–VS to (+VS
– 2.5 V)
–VS to (+VS
– 2.5 V)
–VS to (+VS
– 2.5 V)
V
Input Offset Voltage
Input Current
Input Resistance
Output Current
±0.8
±2
؎2
؎10
± 0.5
± 2
؎1
؎5
± 0.8
± 2
؎2
؎10
mV
nA
Ω
108
108
108
(+5 mA,
(+5 mA,
(+5 mA,
–130 µA)
–130 µA)
–130 µA)
Short Circuit Current
Small Signal Bandwidth
Slew Rate5
20
1
5
20
1
5
20
1
5
mA
MHz
V/µs
DENOMINATOR INPUT
Input Range
Input Resistance
Offset Voltage
0 to +10
25
±0.2
0 to +10
25
± 0.2
0 to +10
25
± 0.2
V
kΩ
mV
20
30
±0.5
20
30
± 0.5
20
30
± 0.5
CHIP SELECT PROVISION (CS)
RMS “ON” Level
RMS “OFF” Level
IOUT of Chip Select
CS “LOW”
Open or +2.4 V < VC < +VS
VC < +0.2 V
Open or +2.4 V < VC < +VS
VC < +0.2 V
Open or +2.4 V < VC < +VS
VC < +0.2 V
10
Zero
10
Zero
10
Zero
µA
CS “HIGH”
On Time Constant
Off Time Constant
10 µs + ((25 kΩ) × CAV
10 µs + ((25 kΩ) × CAV
)
)
10 µs + ((25 kΩ) × CAV
10 µs + ((25 kΩ) × CAV
)
)
10 µs + ((25 kΩ) × CAV
10 µs + ((25 kΩ) × CAV
)
)
POWER SUPPLY
Operating Voltage Range
Quiescent Current
Standby Current
؎3.0
2.2
؎18
3
450
؎3.0
2.2
؎18
3
450
؎3.0
؎18
3
450
V
mA
µA
2.2
350
350
350
TRANSISTOR COUNT
107
107
107
–2–
REV. E