Datasheet

AD8138
Rev. F | Page 3 of 24
SPECIFICATIONS
±D
IN
to ±OUT SPECIFICATIONS
At 25°C, V
S
= ±5 V, V
OCM
= 0, G = +1, R
L, dm
= 500 Ω, unless otherwise noted. Refer to Figure 39 for test setup and label descriptions. All
specifications refer to single-ended input and differential outputs, unless otherwise noted.
Table 1.
Parameter Conditions Min Typ Max Unit
DYNAMIC PERFORMANCE
−3 dB Small Signal Bandwidth V
OUT
= 0.5 V p-p, C
F
= 0 pF 290 320 MHz
V
OUT
= 0.5 V p-p, C
F
= 1 pF 225 MHz
Bandwidth for 0.1 dB Flatness V
OUT
= 0.5 V p-p, C
F
= 0 pF 30 MHz
Large Signal Bandwidth V
OUT
= 2 V p-p, C
F
= 0 pF 265 MHz
Slew Rate V
OUT
= 2 V p-p, C
F
= 0 pF 1150 V/μs
Settling Time 0.01%, V
OUT
= 2 V p-p, C
F
= 1 pF 16 ns
Overdrive Recovery Time V
IN
= 5 V to 0 V step, G = +2 4 ns
NOISE/HARMONIC PERFORMANCE
1
Second Harmonic V
OUT
= 2 V p-p, 5 MHz, R
L, dm
= 800 Ω −94 dBc
V
OUT
= 2 V p-p, 20 MHz, R
L, dm
= 800 Ω −87 dBc
V
OUT
= 2 V p-p, 70 MHz, R
L, dm
= 800 Ω −62 dBc
Third Harmonic V
OUT
= 2 V p-p, 5 MHz, R
L, dm
= 800 Ω −114 dBc
V
OUT
= 2 V p-p, 20 MHz, R
L, dm
= 800 Ω −85 dBc
V
OUT
= 2 V p-p, 70 MHz, R
L, dm
= 800 Ω −57 dBc
IMD 20 MHz −77 dBc
IP3 20 MHz 37 dBm
Voltage Noise (RTI) f = 100 kHz to 40 MHz 5 nV/√Hz
Input Current Noise f = 100 kHz to 40 MHz 2 pA/√Hz
INPUT CHARACTERISTICS
Offset Voltage V
OS, dm
= V
OUT, dm
/2; V
DIN+
= V
DIN−
= V
OCM
= 0 V −2.5 ±1 +2.5 mV
T
MIN
to T
MAX
variation ±4 μV/°C
Input Bias Current 3.5 7 μA
T
MIN
to T
MAX
variation −0.01 μA/°C
Input Resistance Differential 6 MΩ
Common mode 3 MΩ
Input Capacitance 1 pF
Input Common-Mode Voltage −4.7 to +3.4 V
CMRR ∆V
OUT, dm
/∆V
IN, cm
; ∆V
IN, cm
= ±1 V −77 −70 dB
OUTPUT CHARACTERISTICS
Output Voltage Swing Maximum ∆V
OUT
; single-ended output 7.75 V p-p
Output Current 95 mA
Output Balance Error ∆V
OUT, cm
/∆V
OUT, dm
; ∆V
OUT, dm
= 1 V −66 dB
1
Harmonic distortion performance is equal or slightly worse with higher values of R
L, dm
. See Figure 17 and Figure 18 for more information.