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OPA3684IDBQ PDF预览

OPA3684IDBQ

更新时间: 2024-01-29 15:07:01
品牌 Logo 应用领域
德州仪器 - TI 放大器光电二极管
页数 文件大小 规格书
32页 963K
描述
Low-Power, Triple Current Feedback Operational Amplifier with Disable 16-SSOP -40 to 85

OPA3684IDBQ 技术参数

是否无铅: 含铅是否Rohs认证: 符合
生命周期:Obsolete零件包装代码:SOIC
包装说明:PLASTIC, QSOP-16针数:16
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.33.00.01风险等级:5.75
Is Samacsys:N放大器类型:OPERATIONAL AMPLIFIER
JESD-30 代码:R-PDSO-G16长度:4.9 mm
功能数量:3端子数量:16
封装主体材料:PLASTIC/EPOXY封装代码:SSOP
封装形状:RECTANGULAR封装形式:SMALL OUTLINE, SHRINK PITCH
峰值回流温度(摄氏度):NOT SPECIFIED认证状态:Not Qualified
座面最大高度:1.75 mm子类别:Operational Amplifier
表面贴装:YES技术:BIPOLAR
温度等级:INDUSTRIAL端子形式:GULL WING
端子节距:0.635 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:3.9 mm
Base Number Matches:1

OPA3684IDBQ 数据手册

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OPA3684  
O
P
A
3
6
8
4
www.ti.com  
SBOS241C – MAY 2002 – REVISED JULY 2008  
Low-Power, Triple Current-Feedback  
OPERATIONAL AMPLIFIER With Disable  
FEATURES  
APPLICATIONS  
MINIMAL BANDWIDTH CHANGE VERSUS GAIN  
170MHz BANDWIDTH: G = +2  
RGB LINE DRIVERS  
LOW-POWER BROADCAST VIDEO DRIVERS  
EQUALIZING FILTERS  
MULTICHANNEL SUMMING AMPLIFIERS  
PROFESSIONAL CAMERAS  
ADC INPUT DRIVERS  
> 120MHz BANDWIDTH TO GAIN > +10  
LOW DISTORTION: < –82dBc at 5MHz  
HIGH OUTPUT CURRENT: 120mA  
SINGLE +5V TO +12V SUPPLY OPERATION  
DUAL ±2.5V TO ±6.0V SUPPLY OPERATION  
LOW SUPPLY CURRENT: 1.7mA/ch  
LOW SHUTDOWN CURRENT: 100µA/ch  
have greater bandwidth, and low-power line drivers to meet the  
demanding requirements of studio cameras and broadcast video.  
DESCRIPTION  
The OPA3684 provides a new level of performance in low-power,  
wideband, current-feedback (CFB) amplifiers. This CFBPLUS am-  
plifier 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  
benefits 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 retains exceptional bandwidth to much  
higher gains and improves harmonic distortion over earlier solu-  
tions limited by inverting input linearity. Beyond simple high-gain  
applications, the OPA3684 CFBPLUS amplifier permits 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  
The output capability of the OPA3684 also sets a new mark in  
performance for low-power current-feedback amplifiers. Delivering  
a full ±4Vp-p swing on ±5V supplies, the OPA3684 also has the  
output current to support > ±3Vp-p into 50. This minimal output  
headroom requirement is complemented by a similar 1.2V input  
stage headroom giving exceptional capability for single +5V opera-  
tion.  
The OPA3684s low 1.7mA/ch 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 OPA3684 supply  
current drops to less than 100µA/ch while the I/O pins go to a high  
impedance state.  
BW (MHz) vs GAIN  
1 of 3 Channels  
6
G = 1  
V+  
3
G = 2  
0
3  
+
G = 5  
VO  
6  
9  
Z(S) IERR  
V–  
12  
G = 10  
G = 20  
G = 50  
G = 100  
15  
18  
21  
24  
IERR  
RF  
RF = 800Ω  
10  
100  
200  
RG  
Low-Power  
Patent Pending  
Amplifier  
MHz  
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.  
All trademarks are the property of their respective owners.  
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.  
Copyright © 2002-2008, Texas Instruments Incorporated  
www.ti.com  

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