Datasheet

ADA4941-1
Rev. C | Page 3 of 24
SPECIFICATIONS
T
A
= 25°C, V
S
= 3 V, OUT+ connected to FB (G = 2), R
L, dm
= 1 kΩ, REF = 1.5 V, unless otherwise noted.
Table 1.
Parameter Conditions Min Typ Max Unit
DYNAMIC PERFORMANCE
−3 dB Bandwidth V
O
= 0.1 V p-p 21 30 MHz
V
O
= 2.0 V p-p 4.6 6.5 MHz
Overdrive Recovery Time +Recover/−Recovery 320/650 ns
Slew Rate V
O
= 2 V step 22 V/µs
Settling Time 0.005% V
O
= 2 V p-p step 300 ns
NOISE/DISTORTION PERFORMANCE
Harmonic Distortion f
C
= 40 kHz, V
O
= 2 V p-p, HD2/HD3 −116/−112 dBc
f
C
= 100 kHz, V
O
= 2 V p-p, HD2/HD3
−101/−98
dBc
f
C
= 1 MHz, V
O
= 2 V p-p, HD2/HD3 −75/−71 dBc
RTO Voltage Noise f = 100 kHz 10.2 nV/√Hz
Input Current Noise f = 100 kHz 1.6 pA/√Hz
DC PERFORMANCE
Differential Output Offset Voltage 0.2 0.8 mV
Differential Input Offset Voltage Drift 1.0 µV/°C
Single-Ended Input Offset Voltage Amp A1 or Amp A2 0.1 0.4 mV
Single-Ended Input Offset Voltage Drift 0.3 µV/°C
Input Bias Current IN and REF 3 4.5 µA
Input Offset Current IN and REF 0.1 µA
Gain (+OUT − −OUT)/(IN − REF) 1.98 2.00 2.01 V/V
Gain Error −1 +1 %
Gain Error Drift 1 5 ppm/°C
INPUT CHARACTERISTICS
Input Resistance IN and REF 24 MΩ
Input Capacitance IN and REF 1.4 pF
Input Common-Mode Voltage Range 0.2 1.9 V
Common-Mode Rejection Ratio (CMRR) CMRR = V
OS, dm
/V
CM
, VREF = VIN, V
CM
= 0.2 V to 1.9 V, G = 4 81 105 dB
OUTPUT CHARACTERISTICS
Output Voltage Swing Each single-ended output, G = 4 ±2.90 ±2.95 V
Output Current 25 mA
Capacitive Load Drive 20% overshoot, V
O
, dm = 200 mV p-p 20 pF
POWER SUPPLY
Operating Range 2.7 12 V
Quiescent Current 2.2 2.4 mA
Quiescent Current—Disable 10 16 µA
Power Supply Rejection Ratio (PSRR)
+PSRR PSRR = V
OS, dm
/ΔV
S
, G = 4 86 100 dB
−PSRR 86 110 dB
DISABLE
DIS Input Voltage Disabled, DIS = High ≥1.5 V
Enabled, DIS = Low
≤1.0
V
DIS Input Current Disabled, DIS = High 5.5 8 µA
Enabled, DIS = Low 4 6 µA
Turn-On Time 0.7 µs
Turn-Off Time 30 µs