ADA4938-1/ADA4938-2
Rev. A | Page 3 of 28
SPECIFICATIONS
DUAL-SUPPLY OPERATION
TA = 25°C, +VS = 5 V, VS = 5 V, VOCM = 0 V, RT = 61.9 Ω, RG = RF = 200 Ω, G = +1, RL, dm = 1 kΩ, unless otherwise noted.
All specifications refer to single-ended input and differential output, unless otherwise noted. For gains other than G = +1, values for RF
±DIN to ±OUT Performance
Table 1.
Parameter
Conditions
Min
Typ
Max
Unit
DYNAMIC PERFORMANCE
3 dB Small Signal Bandwidth
VOUT = 0.1 V p-p
1000
MHz
Bandwidth for 0.1 dB Flatness
VOUT = 2 V p-p
150
MHz
Large Signal Bandwidth
VOUT = 2 V p-p
800
MHz
Slew Rate
VOUT = 2 V p-p
4700
V/μs
Settling Time
VOUT = 2 V p-p
6.5
ns
Overdrive Recovery Time
VIN = 5 V to 0 V step, G = +2
4
ns
NOISE/HARMONIC PERFORMANCE
Second Harmonic
VOUT = 2 V p-p, 10 MHz
106
dBc
VOUT = 2 V p-p, 50 MHz
82
dBc
Third Harmonic
VOUT = 2 V p-p, 10 MHz
109
dBc
VOUT = 2 V p-p, 50 MHz
82
dBc
IMD
f1 = 30.0 MHz, f2 = 30.1 MHz
89
dBc
IP3
f = 30 MHz, RL, dm = 100 Ω
45
dBm
Input Voltage Noise
f = 10 MHz
2.6
nV/√Hz
Noise Figure
G = +4, f = 10 MHz
15.8
dB
Input Current Noise
f = 10 MHz
4.8
pA/√Hz
Crosstalk (ADA4938-2)
f = 100 MHz
85
dB
INPUT CHARACTERISTICS
Offset Voltage
VOS, dm = VOUT, dm/2; VDIN+ = VDIN = 0 V
1
4
mV
TMIN to TMAX variation
±4
μV/°C
Input Bias Current
18
13
μA
TMIN to TMAX variation
0.01
μA/°C
Input Resistance
Differential
6
MΩ
Common mode
3
MΩ
Input Capacitance
1
pF
Input Common-Mode Voltage
VS + 0.3 to +VS 1.6
V
CMRR
VOUT, dm/VIN, cm; VIN, cm = ±1 V, f = 1 MHz
75
dB
OUTPUT CHARACTERISTICS
Output Voltage Swing
Maximum VOUT; single-ended output
VS + 1.2 to +VS 1.2
V
Linear Output Current
Per amplifier, RL, dm = 20 Ω, f = 10 MHz
±75
mA
Output Balance Error
VOUT, cm/VOUT, dm; VOUT, dm = 1 V; f = 10 MHz
60
dB