LMH6642Q-Q1_15 Datasheet, PDF (1/34 Pages) Texas Instruments – Low Power, 130 MHz, 75 mA Rail-to-Rail Output Amplifiers

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
LMH6642Q-Q1, LMH6643Q-Q1
SNOSC61C – JANUARY 2012 – REVISED SEPTEMBER 2014
LMH6642Q/LMH6643Q 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).
• −3dB BW (A_V = +1) 130 MHz
• Supply Voltage Range 2.7 V to 10 V
• Slew Rate, (A_V = −1) 130V/µs⁽¹⁾
• Supply Current (no load) 2.7 mA/amp
• Output Short Circuit Current +115 mA/−145 mA
• Linear Output Current ±75mA
• Input Common Mode Voltage 0.5V Beyond V^−, 1V
from V⁺
• Output Voltage Swing 40mV from Rails
• Input Voltage Noise (100kHz) 17nV/√Hz
• Input Current Noise (100kHz) 0.9pA/√Hz
• THD (5MHz, R_L = 2 kΩ, V_O = 2V_PP, A_V = +2) −62
dBc
• Settling Time 68ns
• Fully Characterized for 3 V, 5 V, and ±5 V
• Overdrive Recovery 100ns
• Output Short Circuit Protected⁽²⁾
• No Output Phase Reversal with CMVR Exceeded
• LMH6643QMM and LMH6642QMF are AEC-Q100
Grade 3 Qualified and are Manufactured on an
Automotive Grade Flow
(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.
Closed Loop Gain vs. Frequency for Various Gain
+3
V_S = ±1.5V
+2 _{RL = 2k}
+1 _{VOUT = 0.2VPP}
0
-1
-2
A_V = +10
-3
A_V = +1
A_V = +5
A_V = +2
10k 100k
1M 10M 100M 500M
FREQUENCY (Hz)
2 Applications
• Active Filters
• CD/DVD ROM
• ADC Buffer Amp
• Portable Video
• Current Sense Buffer
• Automotive
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 40mV 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-Q1
SOT-23 (5)
2.90 mm × 1.60 mm
LMH6643-Q1
VSSOP (8)
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Large Signal Frequency Response
8.0
±2.5V
6.0
2V_PP
4.0
±5V
2.0
4V_PP
0.0
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.