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OPA686N/250 PDF预览

OPA686N/250

更新时间： 2024-11-06 23:24:27
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其他 - ETC 运算放大器
页数 文件大小 规格书
16页 166K
描述
Voltage-Feedback Operational Amplifier

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OPA686N/250 数据手册

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®
OPA686  
OPA686  
OPA686  
For most current data sheet and other product  
information, visit www.burr-brown.com  
TM  
Wideband, Low Noise,  
Voltage Feedback OPERATIONAL AMPLIFIER  
APPLICATIONS  
FEATURES  
● HIGH DYNAMIC RANGE ADC PREAMP  
● HIGH BANDWIDTH: 250MHz (G = +10)  
● LOW INPUT VOLTAGE NOISE: 1.3nV/√Hz  
● VERY LOW DISTORTION: –90dBc (5MHz)  
● HIGH SLEW RATE: 600V/µs  
● LOW NOISE, WIDEBAND,  
TRANSIMPEDANCE AMPLIFIER  
● WIDEBAND, HIGH GAIN AMPLIFIER  
● LOW NOISE DIFFERENTIAL RECEIVER  
● VDSL LINE RECEIVER  
● HIGH DC ACCURACY  
● LOW SUPPLY CURRENT: 12mA  
● ULTRASOUND CHANNEL AMPLIFIER  
● HIGH GAIN BANDWIDTH PRODUCT:  
● IMPROVED REPLACEMENT FOR THE  
1600MHz  
CLC425  
● STABLE FOR GAINS ≥ 7  
A new external compensation technique can be used to give a  
very flat frequency response below the minimum stable gain  
for the OPA686, further improving its already exceptional  
distortion performance. Using this compensation makes the  
OPA686 one of the premier 12- to 14-bit analog-to-digital  
converter input drivers. The supply current for the OPA686 is  
precisely trimmed to 12.4mA at +25°C. This, along with  
carefully defined supply current tempcos in the input and  
output stages, combine to provide exceptional performance  
over the full specified temperature range.  
DESCRIPTION  
The OPA686 combines very high gain bandwidth and large  
signal performance with very low input voltage noise while  
dissipating a low 12mA supply current. The classical differen-  
tial input stage, along with two stages of forward gain and a  
high power output stage, combine to make the OPA686 an  
exceptionally low distortion amplifier with excellent DC accu-  
racy and output drive. The voltage feedback architecture allows  
all standard op amp applications to be implemented with very  
high performance.  
OPA686 RELATED PRODUCTS  
The combination of low input voltage and current noise, along  
with a 1.6GHz gain bandwidth product, make the OPA686 an  
ideal amplifier for wideband transimpedance stages. As a volt-  
age gain stage, the OPA686 is optimized for a flat response at a  
gain of +10 and is guaranteed stable down to a noise gain of +7.  
INPUT NOISE  
GAIN BANDWIDTH  
PRODUCT (MHz)  
SINGLES  
DUALS  
VOLTAGE (nV/√Hz)  
OPA643  
2.3  
1.3  
800  
1600  
3600  
OPA2686  
OPA687  
0.95  
+5V  
Supply decoupling  
not shown.  
100  
20log (50kΩ) = 94dBΩ  
95  
90  
85  
80  
75  
70  
65  
60  
100pF  
0.1µF  
50kΩ  
VO  
OPA686  
IS  
50kΩ  
–5V  
λ
10pF  
Photodiode  
0.2pF  
–VB  
0.1  
1
10  
Frequency (MHz)  
100  
High Gain, 20MHz Transimpedance Amplifier  
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111  
Internet: http://www.burr-brown.com/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132  
©1997 Burr-Brown Corporation  
PDS-1370D  
Printed in U.S.A. May, 2000  
SBOS063  
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