LMH6639_14 Datasheet, PDF (1/26 Pages) National Semiconductor (TI) – LMH6639 190MHz Rail-to-Rail Output Amplifier with Disable

LMH6639
www.ti.com
SNOS989G – JANUARY 2002 – REVISED MARCH 2013
LMH6639 190MHz Rail-to-Rail Output Amplifier with Disable
Check for Samples: LMH6639
FEATURES
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•2 (V_S = 5V, Typical Values Unless Specified)
• Supply Current (No Load) 3.6mA
• Supply Current (Off Mode) 400μA
• Output Resistance (Closed Loop 1MHz) 0.186Ω
• −3dB BW (A_V = 1) 190MHz
• Settling Time 33nsec
• Input Common Mode Voltage −0.2V to 4V
• Output Voltage Swing 40mV from Rails
• Linear Output Current 110mA
• Total Harmonic Distortion −60dBc
• Fully Characterized for 3V, 5V and ±5V
• No Output Phase Reversal with CMVR
Exceeded
• Excellent Overdrive Recovery
• Off Isolation 1MHz −70dB
• Differential Gain 0.12%
• Differential Phase 0.045°
APPLICATIONS
• Active Filters
• CD/DVD ROM
• ADC Buffer Amplifier
• Portable Video
• Current Sense Buffer
DESCRIPTION
The LMH6639 is a voltage feedback operational
amplifier with a rail-to-rail output drive capability of
110mA. Employing TI’s patented VIP10 process, the
LMH6639 delivers a bandwidth of 190MHz at a
current consumption of only 3.6mA. An input common
mode voltage range extending to 0.2V below the V^−
and to within 1V of V⁺, makes the LMH6639 a true
single supply op-amp. The output voltage range
extends to within 30mV of either supply rail providing
the user with a dynamic range that is especially
desirable in low voltage applications.
The LMH6639 offers a slew rate of 172V/μs resulting
in a full power bandwidth of approximately 28MHz.
The LMH6639 also offers protection for the input
transistors by using two anti-parallel diodes and a
series resistor connected across the inputs. The T_ON
value of 83nsec combined with a settling time of
33nsec makes this device ideally suited for
multiplexing applications (see application note for
details). Careful attention has been paid to ensure
device stability under all operating voltages and
modes. The result is a very well behaved frequency
response characteristic for any gain setting including
+1, and excellent specifications for driving video
cables including harmonic distortion of −60dBc,
differential gain of 0.12% and differential phase of
0.045°
100n
5V
INPUT
1k
V_REF
75:
+
-
V^-
V⁺ _OUT
75:
SD
75:
1k
10n
SHUTDOWN INPUT
Figure 1. Typical Single Supply Schematic
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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