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參數(shù)資料
| 型號： | LMH6502 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Wideband, Low Power, Linear-in-dB Variable Gain Amplifier |
| 中文描述： | 寬帶，低功耗，線性以dB可變增益放大器 |
| 文件頁數(shù)： | 1/19頁 |
| 文件大?。?/td> | 941K |
| 代理商： | LMH6502 |
LMH6502
Wideband, Low Power, Linear-in-dB Variable Gain
Amplifier
General Description
The LMH
6502 is a wideband DC coupled differential input
voltage controlled gain stage followed by a high-speed cur-
rent feedback Op Amp which can directly drive a low imped-
ance load. Gain adjustment range is more than 70dB for up
to 10MHz.
Maximum gain is set by external components and the gain
can be reduced all the way to cut-off. Power consumption is
300mW with a speed of 130MHz. Output referred DC offset
voltage is less than 350mV over the entire gain control
voltage range. Device-to-device Gain matching is within
±
0.6dB at maximum gain. Furthermore, gain at any V
is
tested and the tolerance is guaranteed. The output current
feedback Op Amp allows high frequency large signals (Slew
Rate = 1800V/μs) and can also drive heavy load current
(75mA). Differential inputs allow common mode rejection in
low level amplification or in applications where signals are
carried over relatively long wires. For single ended opera-
tion, the unused input can easily be tied to ground (or to a
virtual half-supply in single supply application). Inverting or
non-inverting gains could be obtained by choosing one input
polarity or the other.
To provide ease of use when working with a single supply,
V
G
range is set to be from 0V to +2V relative to pin 11
potential (ground pin). In single supply operation, this ground
pin is tied to a "virtual" half supply.
LMH6502 gain control is linear in dB for a large portion of the
total gain control range. This makes the device suitable for
AGC circuits among other applications. For linear gain con-
trol
applications,
see
the
LMH6503
datasheet.
LMH6502 is available in the SOIC-14 and TSSOP-14 pack-
age.
The
Features
V
S
=
±
5V, T
A
= 25C, R
F
= 1k
, R
G
= 174
, R
L
= 100
, A
V
= A
V(MAX)
= 10 Typical values unless specified.
n
-3dB BW
n
Gain control BW
n
Adjustment range (typical over temp)
n
Gain matching (limit)
n
Slew rate
n
Supply current (no load)
n
Linear output current
n
Output voltage (R
L
= 100
)
n
Input voltage noise
n
Input current noise
n
THD (20MHz, R
L
= 100
, V
O
= 2V
PP
)
n
Replacement for CLC520
130MHz
100MHz
70dB
±
0.6dB
1800V/μs
27mA
±
75mA
±
3.2V
7.7nV/
2.4pA/
53dBc
Applications
n
Variable attenuator
n
AGC
n
Voltage controller filter
n
Video imaging processing
Gain vs. V
G
for Various Temperature
20067706
Typical Application
20067737
A
VMAX
= 10V/V
LMH
is a trademark of National Semiconductor Corporation.
June 2004
L
2004 National Semiconductor Corporation
DS200677
www.national.com
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|---|---|
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| LMH6502MAX | Wideband, Low Power, Linear-in-dB Variable Gain Amplifier |
| LMH6502MT | Wideband, Low Power, Linear-in-dB Variable Gain Amplifier |
| LMH6502MTX | Wideband, Low Power, Linear-in-dB Variable Gain Amplifier |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LMH6502MA | 功能描述:特殊用途放大器 RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
| LMH6502MA/NOPB | 功能描述:特殊用途放大器 Wdbd, Lo Pwr, Linear -in-dB Var Gain Amp RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
| LMH6502MAX | 功能描述:特殊用途放大器 RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
| LMH6502MAX/NOPB | 功能描述:特殊用途放大器 RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
| LMH6502MT | 功能描述:特殊用途放大器 RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
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