LMH6654/55 Single/Dual Low Power, 250 MHz, Low Noise Amplifiers
August 2001
LMH6654/55
Single/Dual Low Power, 250 MHz, Low Noise Amplifiers
General Description
The LMH6654/55 single and dual high speed, voltage feed-
back amplifiers are designed to have unity-gain stable op-
eration with a bandwidth of 250MHz. They operate from
鹵
2.5V to
鹵
6V and each channel consumes only 4.5mA. The
amplifiers feature very low voltage noise and wide output
swing to maximize signal-to-noise ratio.
The LMH6654/55 have a true single supply capability with
input common mode voltage range extending 150 mV below
negative rail and within 1.3V of the positive rail.
LMH6654/55 high speed and low power combination make
these products an ideal choice for many portable, high
speed application where power is at a premium.
The LMH6654 is packaged in SOT23-5 and SOIC-8. The
LMH6655 is packaged in MSOP-8 and SOIC-8.
The LMH6654/55 are built on National鈥檚 Advance VIP10
鈩?/div>
(Vertically Integrated PNP) complementary bipolar process.
Features
(V
S
=
鹵
5V, T
J
= 25藲C, Typical values unless specified).
n
Voltage feedback architecture
n
Unity gain bandwidth
250MHz
鹵
2.5V to
鹵
6V
n
Supply voltage range
n
Slew rate
200V/碌sec
n
Supply current
4.5mA/channel
n
Input common mode voltage
鈭?.15V to +3.7V
n
Output voltage swing (R
L
= 100鈩?
鈭?.6V to 3.4V
n
Input voltage noise
4.5nV/
n
Input current noise
1.7pA/
n
Settling Time to 0.01%
25ns
Applications
n
n
n
n
n
n
ADC drivers
Consumer video
Active filters
Pulse delay circuits
xDSL receiver
Pre-amps
Typical Performance Characteristics
Input Voltage Noise vs. Frequency
Closed Loop Gain vs. Frequency
20016560
20016558
漏 2001 National Semiconductor Corporation
DS200165
www.national.com
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