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PDF LMH6629 Data sheet ( Hoja de datos )
| Número de pieza | LMH6629 | |
| Descripción | High Speed Operational Amplifier | |
| Fabricantes | National Semiconductor Corporation | |
| Logotipo |  |
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LMH6629
www.DataSheet4U.com
June 3, 2010
Ultra-Low Noise, High Speed Operational Amplifier
General Description
The LMH6629 is a high speed, ultra low-noise amplifier de-
signed for applications requiring wide bandwidth with high
gain and low noise such as in communication, test and mea-
surement, optical and ultrasound systems.
The LMH6629 operates on 2.7 to 5.5V supply with an input
common mode range that extends below ground and outputs
that swing to within 0.8V of the rails for ease of use in single
supply applications. The LMH6629 has user-selectable inter-
nal compensation for minimum gains of 4 or 10 controlled by
pulling the COMP pin low or high, thereby avoiding the need
for external compensation capacitors required in competitive
devices.
The low-input noise (0.69nV/√Hz and 2.6 pA/√Hz), low dis-
tortion (HD2/ HD3 = −90 dBc/ −94 dBc) and ultra-low DC
errors (780 µV VOS Max @ 25°C, ±0.45 µV/°C drift) allow pre-
cision operation in both AC- and DC-coupled applications.
The LMH6629 is fabricated in National Semiconductor’s pro-
prietary SiGe process and is available in a 3mm x 3mm, 8 pin
LLP package.
Features
Specified for VS = 5V, RL = 100Ω, AV = 10V/V
■ –3dB bandwidth
900MHz
■ Input voltage noise
0.69 nV/√Hz
■ Input offset voltage max. @ 25°C
±780 µV
■ Slew rate
1600 V/ μs
■ HD2 @ f = 1MHz, 2VPP
−90 dBc
■ HD3 @ f = 1MHz, 2VPP
−94 dBc
■ Supply voltage range
2.7V to 5.5V
■ Typical supply current
15.5 mA
■ Selectable min. gain
≥4 or ≥10
■ Package
LLP-8
Applications
■ Instrumentation Amplifiers
■ Ultrasound Pre-amps
■ Wide-band Active Filters
■ Opto-electronics
■ Medical imaging systems
■ Base-station Amplifiers
■ Trans-impedance amplifier
Typical Application Circuit
FIGURE 1. Transimpedance Amplifier
30068011
© 2010 National Semiconductor Corporation 300680
www.national.com
1 page  
3.3V Electrical Characteristics
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The following specifications apply for single supply with VS = 3.3V, RL = 100Ω terminated to 1.65V, gain = 10V/V, VO = 1VPP,
VCM = VS/2, COMP Pin = HI, unless otherwise noted. Boldface limits apply at the temperature extremes. (Note 2)
Symbol
Parameter
Conditions
Min Typ Max
(Note 5) (Note 5) (Note 5)
Units
DYNAMIC PERFORMANCE
SSBW
LSBW
SR
tr/tf
VO = 200 mVPP
Small signal −3dB bandwidth COMP Pin = LO, AV= 4, VO = 200
mVPP
Large signal −3dB bandwidth VO = 1VPP
COMP Pin = LO, AV= 4, VO = 1VPP
AV= 10, VO = 200 mVPP
0.1 dB bandwidth
COMP Pin = LO, AV= 4, VO = 200
mVPP
Slew rate
AV= 10, 1.3V step
COMP Pin = LO, AV= 4, 1.3V step
AV= 10, 1V step, 10% to 90%
Rise/fall time
COMP Pin = LO, AV= 4, 1V step, 10%
to 90% (Slew Rate Limited)
820
730
540
320
330
85
1100
500
0.7
1.3
MHz
MHz
MHz
V/µs
ns
Ts Settling time
Overload Recovery
NOISE AND DISTORTION
AV= 10, 1V step, ±0.1%
VIN = 1VPP
70
2
HD2
HD3
OIP3
en
in
NF
ANALOG I/O
2nd order distortion
3rd order distortion
Two-tone 3rd Order Intercept
Point
Noise voltage
Noise current
fc = 1MHz, VO = 1VPP
COMP Pin = LO, AV= 4, fc = 1MHz,
VO = 1VPP
fc = 10 MHz, VO = 1VPP
COMP Pin = LO, fc = 10 MHz, AV= 4V,
VO = 1VPP
fc = 1MHz, VO = 1VPP
COMP Pin = LO, AV= 4, fc = 1MHz,
VO = 1VPP
fc = 10 MHz, VO = 1VPP
COMP pin = LO, fc = 10 MHz, VO =
1VPP
fc = 25 MHz, VO = 1VPP composite
fc = 75 MHz, VO = 1VPP composite
Input referred, f > 1MHz
Noise figure
RS = RT = 50Ω
–82
-88
-67
-74
-94
-112
-79
–96
30
26
0.69
2.6
8.0
dBc
dBc
dBm
nV/√HZ
pA/√HZ
dB
CMVR
Input voltage range
CMRR > 70 dB
−0.30
2.1 V
RL = 100Ω to VS/2
VO Output voltage range
No load
0.90
0.95
0.76
0.80
0.79 to
2.50
0.70 to
2.60
2.4
2.3
2.5
2.4
V
IOUT
Linear output current
VO = 1.65V (Note 3)
VOS Input Offset Voltage
230
±150
±680
±700
mA
µV
TcVOS
Input offset voltage
temperature drift
(Note 7)
±1 μV/°C
5 www.national.com
5 Page 
Large Signal Step Response
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Large Signal Step Response
30068064
Small Signal Step Response
30068046
Small Signal Step Response
30068075
Turn-On Waveform
Turn-Off Waveform
30068076
30068025
11
30068024
www.national.com
11 Page | ||
| Páginas | Total 22 Páginas | |
| PDF Descargar | [ Datasheet LMH6629.PDF ] | |
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