Datasheet
LMH6550
www.ti.com
SNOSAK0H –DECEMBER 2004–REVISED MARCH 2013
5V Electrical Characteristics
(1)
(continued)
Single ended in differential out, T
A
= 25°C, A
V
= +1, V
S
= 5V, V
CM
= 2.5V, R
F
= R
G
= 365Ω, R
L
= 500Ω; Unless specified.
Boldface limits apply at the temperature extremes.
Symbol Parameter Conditions Min
(2)
Typ
(3)
Max
(2)
Units
Distortion and Noise Response
HD2 2
nd
Harmonic Distortion V
O
= 2 V
PP
, f = 5 MHz, R
L
= 800Ω −89
dBc
V
O
= 2 V
PP
, f = 20 MHz, R
L
= 800Ω −88
HD3 3
rd
Harmonic Distortion V
O
= 2 V
PP
, f = 5 MHz, R
L
= 800Ω −85
dBc
V
O
= 2 V
PP
, f = 20 MHz, R
L
= 800Ω −70
e
n
Input Referred Noise Voltage f ≥ 1 MHz 6.0 nV/√Hz
i
n
Input Referred Noise Current f ≥ 1 MHz 1.5 pA/√Hz
Input Characteristics (Differential)
V
OSD
Input Offset Voltage Differential Mode, V
ID
= 0, V
CM
= 0 1 ±4 mV
±6
Input Offset Voltage Average
(5)
1.6 µV/°C
Temperature Drift
I
BIAS
Input Bias Current
(6)
0 −8 −16 μA
Input Bias Current Average
(5)
9.5 nA/°C
Temperature Drift
Input Bias Current Difference Difference in Bias Currents Between the 0.3 µA
Two Inputs
CMRR Common-Mode Rejection Ratio DC, V
ID
= 0V 70 80 dBc
Input Resistance Differential 5 MΩ
Input Capacitance Differential 1 pF
V
ICM
Input Common Mode Range CMRR > 53 dB +3.1 +3.2
+0.4 +0.3
V
CM
Pin Input Characteristics (Common Mode Feedback Amplifier)
Input Offset Voltage Common Mode, V
ID
= 0 1 ±5 mV
±8
Input Offset Voltage Average 18.6 µV/°C
Temperature Drift
Input Bias Current 3 μA
V
CM
CMRR V
ID
= 0, 70 75 dB
1V Step on V
CM
Pin, Measure V
OD
Input Resistance V
CM
Pin to Ground 25 kΩ
Common Mode Gain ΔV
O,CM
/ΔV
CM
0.991 V/V
Output Performance
V
OUT
Output Voltage Swing Peak to Peak, Differential, 2.4 2.8 V
V
S
= ±2.5V, V
CM
= 0V
I
OUT
Linear Output Current V
OUT
= 0V Differential ±54 ±70 mA
I
SC
Output Short Circuit Current Output Shorted to Ground 250 mA
V
IN
= 3V Single Ended
(7)
CMVR Common Mode Voltage Range V
ID
= 0, V
CM
Pin = 1.2V and 3.8V 3.72 3.8
V
1.23 1.2
Output Balance Error ΔV
OUT
Common Mode /ΔV
OUT
−65 dB
DIfferential, V
OUT
= 1 V
PP
Differential, f =
10 MHz
Miscellaneous Performance
Enable Voltage Threshold Pin 7 2.0 V
Disable Voltage Threshold Pin 7 1.5 V
(5) Drift determined by dividing the change in parameter at temperature extremes by the total temperature change.
(6) Negative input current implies current flowing out of the device.
(7) The maximum output current (I
OUT
) is determined by device power dissipation limitations.
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