Datasheet
LMH6645, LMH6646, LMH6647
www.ti.com
SNOS970C –JUNE 2001–REVISED APRIL 2013
5V Electrical Characteristics (continued)
Unless otherwise specified, all limits guaranteed for at T
J
= 25°C, V
+
= 5V, V
−
= 0V, V
CM
= V
O
= V
+
/2, and R
f
= 2kΩ, and R
L
=
1kΩ to V
+
/2. Boldface limits apply at the temperature extremes.
Symbol Parameter Conditions Min Typ Max Units
(1) (2) (1)
CMVR Input Common-Mode Voltage CMRR ≥ 50dB −0.5 −0.3
Range −0.1
V
5.3 5.5
5.1
CMRR Common Mode Rejection Ratio V
CM
Stepped from 0V to 5V 56 82
dB
V
CM
Stepped from 0V to 3.8V 66 85
A
VOL
Large Signal Voltage Gain V
O
= 1.5V to 3.5V 76 85
dB
74
V
O
Output Swing R
L
= 1k to V
+
/2 4.80 4.95
V
High
R
L
= 10k to V
+
/2 4.98
Output Swing R
L
= 1k to V
+
/2 50 200
mV
Low
R
L
= 10k to V
+
/2 20
I
SC
Output Short Circuit Current Sourcing to V
−
55
V
ID
= 200mV
(7)(8)
mA
Sinking to V
+
53
V
ID
= −200mV
(7)(8)
I
OUT
Output Current V
OUT
= 0.5V From rails ±20 mA
PSRR Power Supply Rejection Ratio V
+
= 5V to 6V or V
−
= 0V to −1V 75 95 dB
I
S
Supply Current (per channel) Normal Operation 700 1400
μA
Shutdown Mode (LMH6647 only) 10 50
(7) Short circuit test is a momentary test.
(8) Output short circuit duration is infinite for V
S
< 6V at room temperature and below. For V
S
> 6V, allowable short circuit duration is 1.5ms.
±5V Electrical Characteristics
Unless otherwise specified, all limits guaranteed for at T
J
= 25°C, V
+
= 5V, V
−
= −5V, V
CM
= V
O
= 0V, R
f
= 2kΩ, and R
L
= 1kΩ
to GND. Boldface limits apply at the temperature extremes.
Symbol Parameter Conditions Min Typ Max Units
(1) (2) (1)
BW −3dB BW A
V
= +1, V
OUT
= 200mV
PP
40 55 MHz
e
n
Input-Referred Voltage Noise f = 100kHz 17
nV/√Hz
f = 1kHz 25
i
n
Input-Referred Current Noise f = 100kHz 0.75
pA/√Hz
f = 1kHz 1.20
CT Rej. Cross-Talk Rejection f = 5MHz, Receiver:
47 dB
(LMH6646 only) R
f
= R
g
= 510Ω, A
V
= +2
SR Slew Rate A
V
= −1, V
O
= 2V
PP
(3)
15 22 V/μs
T
ON
Turn-On Time (LMH6647 only) 200 ns
T
OFF
Turn-Off Time (LMH6647 only) 700 ns
TH
SD
Shutdown Threshold I
S
≤ 50μA V
4.25 4.60
(LMH6647 only)
I
SD
Shutdown Pin Input Current See
(4)
−20 μA
(LMH6647 only)
V
OS
Input Offset Voltage −5V ≤ V
CM
≤ 5V −3 3
±1 mV
−4 4
TC V
OS
Input Offset Average Drift See
(5)
±5 μV/°C
(1) All limits are guaranteed by testing or statistical analysis.
(2) Typical values represent the most likely parametric norm.
(3) Slew rate is the average of the rising and falling slew rates.
(4) Positive current corresponds to current flowing into the device.
(5) Offset voltage average drift determined by dividing the change in V
OS
at temperature extremes into the total temperature change.
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