LMH6702 Ultra Low Distortion, Wideband Op Amp
June 2003
LMH6702
Ultra Low Distortion, Wideband Op Amp
General Description
The LMH6702 is a very wideband, DC coupled monolithic
operational amplifier designed specifically for wide dynamic
range systems requiring exceptional signal fidelity. Benefit-
ing from National鈥檚 current feedback architecture, the
LMH6702 offers unity gain stability at exceptional speed
without need for external compensation.
With its 720MHz bandwidth (A
V
= 2V/V, V
O
= 2V
PP
), 10-bit
distortion levels through 60MHz (R
L
= 100鈩?, 1.83nV/
input referred noise and 12.5mA supply current, the
LMH6702 is the ideal driver or buffer for high-speed flash
A/D and D/A converters.
Wide dynamic range systems such as radar and communi-
cation receivers, requiring a wideband amplifier offering ex-
ceptional signal purity, will find the LMH6702鈥檚 low input
referred noise and low harmonic and intermodulation distor-
tion make it an attractive high speed solution.
The LMH6702 is constructed using National鈥檚 VIP10
鈩?/div>
com-
plimentary bipolar process and National鈥檚 proven current
feedback architecture. The LMH6702 is available in SOIC
and SOT23-5 packages.
Features
V
S
=
鹵
5V, T
A
= 25藲C, A
V
= +2V/V, R
L
= 100鈩? V
OUT
= 2V
PP
,
Typical unless Noted:
n
2
nd
/3
rd
Harmonics (5MHz, SOT23-5)
鈭?00/鈭?6dBc
n
鈭?dB Bandwidth (V
OUT
= 2V
PP
)
720MHz
n
Low noise
1.83nV/
n
Fast settling to 0.1%
13.4ns
n
Fast slew rate
3100V/碌s
n
Supply current
12.5mA
n
Output current
80mA
n
Low Intermodulation Distortion (75MHz)
鈭?7dBc
n
Improved Replacement for CLC409 and CLC449
Applications
n
n
n
n
n
n
Flash A/D driver
D/A transimpedance buffer
Wide dynamic range IF amp
Radar/communication receivers
Line driver
High resolution video
Inverting Frequency Response
Harmonic Distortion vs. Load and Frequency
20039002
20039007
漏 2003 National Semiconductor Corporation
DS200390
www.national.com
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