ADA4939-1/ADA4939-2
Rev. 0 | Page 3 of 24
SPECIFICATIONS
5 V OPERATION
TA = 25°C, +VS = 5 V, VS = 0 V, VOCM = +VS/2, RF = 402 Ω, RG = 200 Ω, RT = 60.4 Ω (when used), RL, dm = 1 kΩ, unless otherwise noted.
All specifications refer to single-ended input and differential outputs, unless otherwise noted. Refer to
Figure 42 for signal definitions.
±DIN to VOUT, dm Performance
Table 1.
Parameter
Conditions
Min
Typ
Max
Unit
DYNAMIC PERFORMANCE
3 dB Small Signal Bandwidth
VOUT, dm = 0.1 V p-p
1400
MHz
Bandwidth for 0.1 dB Flatness
VOUT, dm = 0.1 V p-p, ADA4939-1
300
MHz
VOUT, dm = 0.1 V p-p, ADA4939-2
90
MHz
Large Signal Bandwidth
VOUT, dm = 2 V p-p
1400
MHz
Slew Rate
VOUT, dm = 2 V p-p, 25% to 75%
6800
V/μs
Overdrive Recovery Time
VIN = 0 V to 1.5 V step, G = 3.16
<1
ns
NOISE/HARMONIC PERFORMANCE
Second Harmonic
VOUT, dm = 2 V p-p, 10 MHz
102
dBc
VOUT, dm = 2 V p-p, 70 MHz
83
dBc
VOUT, dm = 2 V p-p, 100 MHz
77
dBc
Third Harmonic
VOUT, dm = 2 V p-p, 10 MHz
101
dBc
VOUT, dm = 2 V p-p, 70 MHz
97
dBc
VOUT, dm = 2 V p-p, 100 MHz
91
dBc
IMD
f1 = 70 MHz, f2 = 70.1 MHz, VOUT, dm = 2 V p-p
95
dBc
f1 = 140 MHz, f2 = 140.1 MHz, VOUT, dm = 2 V p-p
89
dBc
Voltage Noise (RTI)
f = 100 kHz
nV/√Hz
Input Current Noise
f = 100 kHz
6
pA/√Hz
Crosstalk
f = 100 MHz, ADA4939-2
80
dB
INPUT CHARACTERISTICS
Offset Voltage
VOS, dm = VOUT, dm/2, VDIN+ = VDIN = 2.5 V
3.4
±0.5
+2.8
mV
TMIN to TMAX variation
±2.0
μV/°C
Input Bias Current
26
10
+2.2
μA
TMIN to TMAX variation
±0.5
μA/°C
Input Offset Current
11.2
+0.5
+11.2
μA
Input Resistance
Differential
180
kΩ
Common mode
450
kΩ
Input Capacitance
1
pF
Input Common-Mode Voltage
1.1
3.9
V
CMRR
VOUT, dm/VIN, cm, VIN, cm = ±1 V
83
77
dB
OUTPUT CHARACTERISTICS
Output Voltage Swing
0.9
4.1
V
Linear Output Current
100
mA
Output Balance Error
VOUT, cm/VOUT, dm, VOUT, dm = 1 V, 10 MHz,
64
dB