Datasheet

Data Sheet AD8031/AD8032
Rev. F | Page 3 of 20
SPECIFICATIONS
+2.7 V SUPPLY
@ T
A
= 25°C, V
S
= 2.7 V, R
L
= 1 kΩ to 1.35 V, R
F
= 2.5 kΩ, unless otherwise noted.
Table 1.
AD8031A/AD8032A
AD8031B/AD8032B
Parameter Conditions Min Typ Max Min Typ Max Unit
DYNAMIC PERFORMANCE
–3 dB Small Signal Bandwidth G = +1, V
O
< 0.4 V p-p 54 80 54 80 MHz
Slew Rate G = −1, V
O
= 2 V step 25 30 25 30 V/µs
Settling Time to 0.1% G = −1, V
O
= 2 V step, C
L
= 10 pF 125 125 ns
DISTORTION/NOISE PERFORMANCE
Total Harmonic Distortion f
C
= 1 MHz, V
O
= 2 V p-p, G = +2 −62 −62 dBc
f
C
= 100 kHz, V
O
= 2 V p-p, G = +2 −86 −86 dBc
Input Voltage Noise f = 1 kHz 15 15 nV/√Hz
Input Current Noise f = 100 kHz 0.4 0.4 pA/√Hz
f = 1 kHz
5
5
pA/√Hz
Crosstalk (AD8032 Only) f = 5 MHz −60 −60 dB
DC PERFORMANCE
Input Offset Voltage V
CM
= V
CC
/2; V
OUT
= 1.35 V ±1 ±6 ±0.5 ±1.5 mV
T
MIN
to T
MAX
±6 ±10 ±1.6 ±2.5 mV
Offset Drift V
CM
= V
CC
/2; V
OUT
= 1.35 V 10 10 µV/°C
Input Bias Current V
CM
= V
CC
/2; V
OUT
= 1.35 V 0.45 2 0.45 2 µA
T
MIN
to T
MAX
2.2 2.2 µA
Input Offset Current 50 500 50 500 nA
Open-Loop Gain
V
CM
= V
CC
/2; V
OUT
= 0.35 V to 2.35 V
76
80
76
80
dB
T
MIN
to T
MAX
74 74 dB
INPUT CHARACTERISTICS
Common-Mode Input Resistance 40 40 MΩ
Differential Input Resistance 280 280 kΩ
Input Capacitance 1.6 1.6 pF
Input Voltage Range −0.5 to
+3.2
−0.5 to
+3.2
V
Input Common-Mode Voltage Range
−0.2 to
+2.9
−0.2 to
+2.9
V
Common-Mode Rejection Ratio V
CM
= 0 V to 2.7 V 46 64 46 64 dB
V
CM
= 0 V to 1.55 V 58 74 58 74 dB
Differential Input Voltage 3.4 3.4 V
OUTPUT CHARACTERISTICS
Output Voltage Swing Low R
L
= 10 kΩ 0.05 0.02 0.05 0.02 V
Output Voltage Swing High 2.6 2.68 2.6 2.68 V
Output Voltage Swing Low R
L
= 1 kΩ 0.15 0.08 0.15 0.08 V
Output Voltage Swing High 2.55 2.6 2.55 2.6 V
Output Current 15 15 mA
Short Circuit Current Sourcing 21 21 mA
Sinking −34 −34 mA
Capacitive Load Drive G = +2 (See Figure 46) 15 15 pF
POWER SUPPLY
Operating Range 2.7 12 2.7 12 V
Quiescent Current per Amplifier 750 1250 750 1250 μA
Power Supply Rejection Ratio V
S
− = 0 V to −1 V or
V
S
+ = +2.7 V to +3.7 V
75 86 75 86 dB