LMH6642_16 Datasheet, PDF (1/39 Pages) Texas Instruments – LMH664x Low Power, 130 MHz, 75 mA Rail-to-Rail Output Amplifiers

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LMH6642, LMH6643, LMH6644
SNOS966Q – MAY 2001 – REVISED SEPTEMBER 2014
LMH664x Low Power, 130 MHz, 75 mA Rail-to-Rail Output Amplifiers
1 Features
1(V_S = ±5 V, T_A = 25°C, R_L = 2 kΩ, A_V = +1.
Typical Values Unless Specified).
• −3 dB BW (A_V = +1) 130 MHz
• Supply Voltage Range 2.7 V to 12.8 V
• Slew Rate, (A_V = −1) 130V/µs⁽¹⁾
• Supply Current (no load) 2.7 mA/amp
• Output Short Circuit Current +115 mA to 145 mA
• Linear Output Current ±75 mA
• Input Common Mode Volt. 0.5 V Beyond V^−, 1 V
from V⁺
• Output Voltage Swing 40 mV from Rails
• Input Voltage Noise (100 kHz) 17nV/√Hz
• Input Current Noise (100 kHz) 0.9pA/√Hz
• THD (5MHz, R_L = 2kΩ, V_O = 2V_PP, A_V = +2) −62
dBc
• Settling Time 68 ns
• Fully Characterized for 3 V, 5 V, and ±5 V
• Overdrive Recovery 100 ns
• Output Short Circuit Protected⁽²⁾
• No Output Phase Reversal with CMVR Exceeded
(1) _{Slew rate is the average of the rising and falling slew rates}
(2) _{Output short circuit duration is infinite for VS < 6 V at room}
temperature and below. For V_S > 6 V, allowable short circuit
duration is 1.5 ms.
2 Applications
• Active Filters
• CD/DVD ROM
• ADC Buffer Amp
• Portable Video
• Current Sense Buffer
3 Description
The LMH664X family true single supply voltage
feedback amplifiers offer high speed (130 MHz), low
distortion (−62 dBc), and exceptionally high output
current (approximately 75 mA) at low cost and with
reduced power consumption when compared against
existing devices with similar performance.
Input common mode voltage range extends to 0.5 V
below V^− and 1 V from V⁺. Output voltage range
extends to within 40 mV of either supply rail, allowing
wide dynamic range especially desirable in low
voltage applications. The output stage is capable of
approximately 75 mA in order to drive heavy loads.
Fast output Slew Rate (130 V/µs) ensures large
peak-to-peak output swings can be maintained even
at higher speeds, resulting in exceptional full power
bandwidth of 40 MHz with a 3 V supply. These
characteristics, along with low cost, are ideal features
for a multitude of industrial and commercial
applications.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LMH6642
SOT-23 (5)
SOIC (8)
2.90 mm × 1.60 mm
4.90 mm × 3.91 mm
LMH6643
SOIC (8)
VSSOP (8)
3.00 mm × 3.00 mm
LMH6644
SOIC (14)
TSSOP (14)
8.64 mm × 3.91 mm
5.00 mm × 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Closed Loop Gain vs. Frequency
for Various Supplies
8.0
±1.5V
6.0
4.0
±5
2.0
0.0
±2.5V
V_O = 0.2V_PP
A_V = +2
R_F = R_L = 2k
100k
1M
10M
FREQUENCY (Hz)
200M
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.