Datasheet
LMH6551
www.ti.com
SNOSAK7C –FEBRUARY 2005–REVISED MARCH 2013
5V Electrical Characteristics
(1)
(continued)
Single ended in differential out, T
A
= 25°C, G = +1, V
S
= 5V, V
CM
= 2.5V, R
F
= R
G
= 365Ω, R
L
= 500Ω; Unless
specifiedBoldface limits apply at the temperature extremes.
Symbol Parameter Conditions Min
(2)
Typ
(3)
Max
(2)
Units
Input Characteristics (Differential)
V
OSD
Input Offset Voltage Differential Mode, V
ID
= 0, V
CM
= 0 0.5 ±4 mV
±6
Input Offset Voltage Average
(5)
−0.8 µV/°C
Temperature Drift
I
BIAS
Input Bias Current
(6)
−4 0 μA
-10
Input Bias Current Average
(5)
−3 nA/°C
Temperature Drift
Input Bias Current Difference Difference in Bias currents between the 0.03 µA
two inputs
CMRR Common-Mode Rejection Ratio DC, V
ID
= 0V 70 78 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 0.5 ±5 mV
±8
Input Offset Voltage Average 5.8 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
0.995 0.991 1.005 V/V
Output Performance
V
OUT
Output Voltage Swing Single Ended, Peak to Peak, V
S
= ±2.5V, ±2.4 ±2.8 V
V
CM
= 0V
I
OUT
Linear Output Current V
OUT
= 0V Differential ±45 ±60 mA
I
SC
Output Short Circuit Current Output Shorted to Ground 230 mA
V
IN
= 3V Single Ended
(7)
CMVR Output Common Mode Voltage V
ID
= 0, V
CM
pin = 1.2V and 3.8V 3.72 3.8
V
Range 1.23 1.2
Output Balance Error ΔV
OUT
Common Mode /ΔV
OUT
DIfferential, −65 dB
V
OUT
= 1Vpp Differential, f = 10 MHz
Miscellaneous Performance
Open Loop Gain DC, Differential 70 dB
PSRR Power Supply Rejection Ratio DC, ΔV
S
= ±0.5V 72 88 dB
I
S
Supply Current R
L
= ∞ 10 11.5 13.5 mA
15.5
(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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