Datasheet
Data Sheet AD736
Rev. I | Page 3 of 20
SPECIFICATIONS
At 25°C ± 5 V supplies, ac-coupled with 1 kHz sine wave input applied, unless otherwise noted. Specifications in bold are tested on all
production units at final electrical test. Results from those tests are used to calculate outgoing quality levels.
Table 1.
AD736J/AD736A AD736K/AD736B
Parameter Conditions Min Typ Max Min Typ Max Unit
TRANSFER FUNCTION V
OUT
= √Avg (V
IN
2
)
CONVERSION ACCURACY 1 kHz sine wave
Total Error, Internal Trim
1
Using C
C
All Grades 0 mV rms to 200 mV rms 0.3/0.3
0.5/0.5
0.2/0.2
0.3/0.3
±mV/±% of reading
200 mV to 1 V rms −1.2
±2.0
−1.2
±2.0
% of reading
T
MIN
to T
MAX
A and B Grades @ 200 mV rms
0.7/0.7
0.5/0.5
±mV/±% of reading
J and K Grades @ 200 mV rms 0.007
0.007
±% of reading/°C
vs. Supply Voltage
@ 200 mV rms Input V
S
= ±5 V to ±16.5 V
0
+0.06
+0.1 0
+0.06
+0.1
%/V
V
S
= ±5 V to ±3 V
0
−0.18
−0.3 0
−0.18
−0.3
%/V
DC Reversal Error, DC-Coupled @ 600 mV dc
1.3 2.5
1.3 2.5 % of reading
Nonlinearity
2
, 0 mV to 200 mV @ 100 mV rms
0
0.25
0.35 0
0.25
0.35
% of reading
Total Error, External Trim 0 mV rms to 200 mV rms 0.1/0.5 0.1/0.3 ±mV/±% of reading
ERROR VS. CREST FACTOR
3
Crest Factor = 1 to 3 C
AV
, C
F
= 100 µF 0.7 0.7 % additional error
Crest Factor = 3 to 5 C
AV
, C
F
= 100 µF 2.5 2.5 % additional error
INPUT CHARACTERISTICS
High Impedance Input
Signal Range (Pin 2)
Continuous RMS Level V
S
= +2.8 V, −3.2 V
200
200
mV rms
V
S
= ±5 V to ±16.5 V
1
1
V rms
Peak Transient Input V
S
= +2.8 V, −3.2 V
±0.9
±0.9
V
V
S
= ±5 V
±2.7
±2.7 V
V
S
= ±16.5 V
±4.0
±4.0
V
Input Resistance 10
12
10
12
Ω
Input Bias Current V
S
= ±3 V to ±16.5 V 1 25 1 25 pA
Low Impedance Input
Signal Range (Pin 1)
Continuous RMS Level V
S
= +2.8 V, –3.2 V 300 300 mV rms
V
S
= ±5 V to ±16.5 V 1 1 V rms
Peak Transient Input V
S
= +2.8 V, −3.2 V ±1.7 ±1.7 V
V
S
= ±5 V ±3.8 ±3.8 V
V
S
= ±16.5 V ±11 ±11 V
Input Resistance 6.4 8 9.6 6.4 8 9.6 kΩ
Maximum Continuous
Nondestructive Input
All supply voltages ±12 ±12 V p-p
Input Offset Voltage
4
J and K Grades
±3
±3
mV
A and B Grades
±3
±3
mV
vs. Temperature 8 30 8 30 µV/°C
vs. Supply V
S
= ±5 V to ±16.5 V 50
150
50
150
µV/V
V
S
= ±5 V to ±3 V
80
80
µV/V