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PDF LMH6658 Data sheet ( Hoja de datos )
| Número de pieza | LMH6658 | |
| Descripción | 270MHz Single Supply / Single & Dual Amplifiers | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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October 2004
LMH6657/LMH6658
270MHz Single Supply, Single & Dual Amplifiers
General Description
The LMH6657/6658 are low-cost operational amplifiers that
operate from a single supply with input voltage range ex-
tending below the V−. Based on easy to use voltage feed-
back topology and boasting fast slew rate (700V/µs) and
high speed (140MHz GBWP), the LMH6657 (Single) and
LMH6658 (dual) can be used in high speed large signal
applications. These applications include instrumentation,
communication devices, set-top boxes, etc.
With a -3dB BW of 100MHz (AV = +2) and DG & DP of 0.03%
& 0.10˚ respectively, the LMH6657/6658 are well suited for
video applications. The output stage can typically supply
80mA into the load with a swing of about 1V from either rail.
For Industrial applications, the LMH6657/6658 are excellent
cost-saving choices. Input referred voltage noise is low and
the input voltage can extend below V− to ease amplification
of low level signals that could be at or near the system
ground. With low distortion and fast settling, LMH6657/6658
can provide buffering for A/D and D/A applications.
The LMH6657/6658 versatility and ease of use is extended
even further by offering these high slew rate , high speed Op
Amps in miniature packages such as SOT23-5, SC70,
SOIC-8, and MSOP-8. Refer to the Ordering Information
section for packaging options available for each device.
Features
VS = 5V, TA = 25˚C, RL = 100Ω (Typical values unless
specified)
n −3dB BW (AV = +1)
n Supply voltage range
270MHz
3V to 12V
n Slew rate, (VS = ±5V)
n Supply current
700V/µs
6.2mA/amp
n Output current
+80/−90mA
n Input common mode volt. 0.5V beyond V−, 1.7V from V+
n Output voltage swing (RL = 2kΩ)
n Input voltage noise
0.8V from rails
11nV/
n Input current noise
2.1pA/
n DG error
0.03%
n DP error
0.10˚
n THD (5MHz)
−55dBc
n Settling time (0.1%)
37ns
n Fully characterized for 5V, and ±5V
n Output overdrive recovery
18ns
n Output short circuit protected (Note 10)
n No output phase reversal with CMVR exceeded
Applications
n CD/DVD ROM
n ADC buffer amp
n Portable video
n Current sense buffer
n Portable communications
Connection Diagrams
SOT23-5/SC70-5 (LMH6657)
SOIC-8/MSOP-8 (LMH6658)
Top View
20053261
© 2004 National Semiconductor Corporation DS200532
20053263
www.national.com
1 page  
±5V Electrical Characteristics (Continued)
Unless otherwise specified, all limits guaranteed for at TJ = 25˚C, V+ = 5V, V− = −5V, VCM = VO, and RL = 100Ω (or as speci-
fied) tied to 0V. Boldface limits apply at the temperature extremes.
Symbol
Parameter
Conditions
Min
(Note 6)
Typ
(Note 5)
Max
(Note 6)
Units
IOS Input Offset Current
50 300
nA
500
CMRR
+PSRR
−PSRR
Common ModeRejection Ratio
Positive Power Supply
Rejection Ratio
Negative Power Supply
Rejection Ratio
VCM Stepped from −5V to 3.0V
V+ = 4.5V to 5.5V, VCM = −4V
V− = −4.5V to −5.5V
75 84
75 82
78 85
dB
dB
dB
IS Supply Current (per channel) No load
6.5 9.0
mA
11
Miscellaneous Performance
VOH Output Swing
High
RL = 2k
4.10
3.80
4.25
RL = 150Ω
4.00
3.70
4.20
V
RL = 75Ω
3.85
3.50
4.18
VOL Output Swing
Low
RL = 2k
−4.05
−3.80
−4.19
RL = 150Ω
−3.90
−3.65
−4.05
V
IOUT
ISC
R L = 75Ω
Output Current
Output Short Circuit Current
(Note 10)
VOUT = 1V from either rail
Sourcing to Ground
Sinking to Ground
−3.80
−3.50
±45
120
100
120
100
−4.00
+100, −110
180
230
mA
mA
RIN Common Mode Input
Resistance
4 MΩ
CIN Common Mode Input
Capacitance
1.8
pF
ROUT
Output Impedance
f = 1MHz, AV = +1
0.06
Ω
5 www.national.com
5 Page 
Typical Performance Characteristics (Continued)
Short Circuit Current
Short Circuit Current
20053230
Settling Time vs. Output Step Amplitude
20053231
Settling Time vs. Output Step Amplitude
20053208
0.1% Settling Time vs. Cap Load
∆VOS vs. VOUT
20053207
20053209
11
20053240
www.national.com
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet LMH6658.PDF ] | |
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