LMH6611MK/NOPB National Semiconductor, LMH6611MK/NOPB Datasheet - Page 23
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LMH6611MK/NOPB
Manufacturer Part Number
LMH6611MK/NOPB
Description
IC AMP 345MHZ 3.2MA R-R TSOT23-6
Manufacturer
National Semiconductor
Series
PowerWise®r
Datasheet
1.551600074-001.pdf
(30 pages)
Specifications of LMH6611MK/NOPB
Amplifier Type
General Purpose
Number Of Circuits
1
Output Type
Rail-to-Rail
Slew Rate
460 V/µs
Gain Bandwidth Product
135MHz
-3db Bandwidth
365MHz
Current - Input Bias
6.5µA
Voltage - Input Offset
74µV
Current - Supply
3.3mA
Current - Output / Channel
120mA
Voltage - Supply, Single/dual (±)
2.7 V ~ 11 V, ±1.35 V ~ 5.5 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
TSOT-23-6, TSOT-6
For Use With
551600083-001 - BOARD FOR SOT23 LMH6611/18
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
LMH6611MK
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LMH6611MK/NOPB
Manufacturer:
TI
Quantity:
3 400
SINGLE-ENDED TO DIFFERENTIAL ADC DRIVER
The single-ended to differential ADC driver in Figure 3 utilizes
an LMH6612 dual op amp to buffer a single-ended source to
drive an ADC with differential inputs. One of the op amps is
configured as a unity gain buffer that drives the inverting
(IN−) input of the op amp U2 and non-inverting (IN+) input of
the ADC121S625. U2 inverts the input signal and drives the
inverting input of the ADC121S625. The ADC driver is con-
figured for a gain of +2 to reduce the noise without sacrificing
THD performance. The common mode voltage of 2.5V is set
FIGURE 6. Single-Ended to Differential ADC Driver
FIGURE 5. LMH6611 and ADC121S101 Layout
23
up at the non-inverting inputs of both op amps U1 and U2.
This configuration produces differential ±2.5 V
nals, when the single-ended input signal of 0 to V
coupled into the non-inverting terminal of the op amp and
each non-inverting terminal of the op amp is biased at the mid-
scale of 2.5V. The two output RC anti-aliasing filters are used
between both the outputs of U1 and U2 and the input of the
ADC121S625 to minimize the effect of undesired high fre-
quency noise coming from the input source. Each RC filter
has the cutoff frequency of approximately 22 MHz.
30033640
PP
www.national.com
output sig-
REF
30033680
is AC