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參數資料
| 型號： | OPA683IDR |
| 元件分類： | 運動控制電子 |
| 英文描述： | OP-AMP|SINGLE|BIPOLAR|SOP|8PIN|PLASTIC |
| 中文描述： | 運放|單|雙極|專科| 8引腳|塑料 |
| 文件頁數： | 1/24頁 |
| 文件大小： | 400K |
| 代理商： | OPA683IDR |
OPA683
www.ti.com
Copyright 2001, Texas Instruments Incorporated
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
SBOS221B – NOVEMBER 2001 — REVISED – JUNE 2002
Very Low-Power, Current Feedback
OPERATIONAL AMPLIFIER With Disable
FEATURES
G
REDUCED BANDWIDTH CHANGE VERSUS GAIN
G
150MHz BANDWIDTH G = +2
G
> 90MHz BANDWIDTH TO GAIN > +10
G
LOW DISTORTION: < –69dBc at 5MHz
G
HIGH OUTPUT CURRENT: 110mA
G
SINGLE +5V TO +12V SUPPLY OPERATION
G
DUAL
±
2.5V TO
±
6V SUPPLY OPERATION
G
LOW SUPPLY CURRENT: 0.94mA
G
LOW SHUTDOWN CURRENT: 100
μ
A
DESCRIPTION
The OPA683 provides a new level of performance in very low-
power, wideband, current feedback amplifiers. This CFB
plus
ampli-
fier is among the first to use an internally closed-loop input buffer
stage that enhances performance significantly over earlier low-
power CFB amplifiers. While retaining the benefits of very low
power operation, this new architecture provides many of the
advantages of a more ideal CFB amplifier. The closed-loop input
stage buffer gives a very low and linearized impedance path at the
inverting input to sense the feedback error current. This improved
inverting input impedance gives exceptional bandwidth retention
to much higher gains and improved harmonic distortion over earlier
solutions limited by inverting input linearity. Beyond simple high
gain applications, the OPA683 CFB
plus
amplifier can allow the gain
setting element to be set with considerable freedom from amplifier
bandwidth interaction. This allows frequency response peaking
elements to be added, multiple input inverting summing circuits to
V+
V
O
V
–
I
ERR
R
G
R
F
Patent Pending
Z
(S)
I
ERR
+
Low-Power
Amplifier
9
6
3
0
–
3
–
6
–
9
–
12
–
15
–
18
–
21
N
1
10
200
100
R
F
= 1.2k
Frequency (MHz)
OPA683 BANDWIDTH vs GAIN
G = 10
G = 20
G = 50
G = 100
G = 2
G = 5
OPA683
OPA683
APPLICATIONS
G
LOW POWER BROADCAST VIDEO DRIVERS
G
EQUALIZING FILTERS
G
SAW FILTER HIGH GAIN POST AMPLIFIERS
G
SHORT LOOP ADSL CO DRIVERS
G
MULTICHANNEL SUMMING AMPLIFIERS
G
PROFESSIONAL CAMERAS
G
ADC INPUT DRIVERS
have greater bandwidth, and low-power line drivers to meet the
demanding requirements of studio cameras and broadcast video.
The output capability for the OPA683 also sets a new mark in
performance for very low-power current feedback amplifiers. De-
livering a full
±
4Vp-p swing on
±
5V supplies, the OPA683 also has
the output current to support this swing into a 100
load. This
minimal output headroom requirement is complemented by a
similar 1.2V input stage headroom giving exceptional capability for
single +5V operation.
The OPA683
’
s low 0.94mA supply current is precisely trimmed at
25
°
C. This trim, along with low shift over temperature and supply
voltage, gives a very robust design over a wide range of operating
conditions. System power may be further reduced by using the
optional disable control pin. Leaving this disable pin open, or holding
it HIGH, gives normal operation. If pulled LOW, the OPA683 supply
current drops to less than 100
μ
A while the I/O pins go to a high
impedance state.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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| OPA685U | Ultra-Wideband, Current-Feedback OPERATIONAL AMPLIFIER With Disable TM |
| OPA699ID | Wideband, High Gain VOLTAGE LIMITING AMPLIFIER |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| OPA683IDRG4 | 功能描述:高速運算放大器 Very Lo-Pwr Current Feedback RoHS:否 制造商:Texas Instruments 通道數量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| OPA684 | 制造商:BB 制造商全稱:BB 功能描述:Quad, Low-Power, Current-Feedback OPERATIONAL AMPLIFIER |
| OPA684ID | 功能描述:高速運算放大器 Low-Power Current Feedback RoHS:否 制造商:Texas Instruments 通道數量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| OPA684IDBVR | 功能描述:高速運算放大器 Low-Power Current Feedback RoHS:否 制造商:Texas Instruments 通道數量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| OPA684IDBVRG4 | 功能描述:高速運算放大器 Low-Power Current Feedback RoHS:否 制造商:Texas Instruments 通道數量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
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