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OPA820IDR

更新时间： 2024-11-03 22:50:47
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25页 425K
描述
Unity-Gain Stable, Low-Noise, Voltage-Feedback Operational Amplifier

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OPA820IDR 数据手册

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OPA820  
SBOS303A − JUNE 2004 − REVISED JULY 2004  
Unity-Gain Stable, Low-Noise, Voltage-Feedback  
Operational Amplifier  
FD EATURES  
DESCRIPTION  
HIGH BANDWIDTH (240MHz, G = +2)  
The OPA820 provides a wideband, unity-gain stable,  
voltage-feedback amplifier with a very low input noise voltage  
and high output current using a low 5.6mA supply current. At  
unity-gain, the OPA820 gives > 800MHz bandwidth with < 1dB  
peaking. The OPA820 complements this high-speed  
operation with excellent DC precision in a low-power device.  
A worst-case input offset voltage of 750µV and an offset  
current of 400nA give excellent absolute DC precision for  
pulse amplifier applications.  
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HIGH OUTPUT CURRENT ( 110mA)  
LOW INPUT NOISE (2.5nV/√Hz)  
LOW SUPPLY CURRENT (5.6mA)  
FLEXIBLE SUPPLY VOLTAGE  
Dual 2.5V to 6V  
Single +5V to +12V  
D
EXCELLENT DC ACCURACY  
Maximum 25°C Input Offset Voltage = 750µV  
Maximum 25°C Input Offset Current = 400nA  
Minimal input and output voltage swing headroom allow the  
OPA820 to operate on a single +5V supply with > 2V output  
swing. While not a rail-to-rail (RR) output, this swing will  
support most emerging analog-to-digital converter (ADC)  
input ranges with lower power and noise than typical RR  
output op amps.  
PP  
AD PPLICATIONS  
LOW-COST VIDEO LINE DRIVERS  
Exceptionally low dG/dP (0.01%/0.03°) supports low-cost  
composite video line driver applications. Existing designs can  
use the industry-standard pinout SO-8 package while  
emerging high-density portable applications can use the  
SOT23-5. Offering the industry’s lowest thermal impedance in  
a SOT package, along with full specification over both the  
commercial and industrial temperature ranges, gives solid  
performance over a wide temperature range.  
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ADC PREAMPLIFIERS  
ACTIVE FILTERS  
LOW-NOISE INTEGRATORS  
PORTABLE TEST EQUIPMENT  
OPTICAL CHANNEL AMPLIFIERS  
LOW-POWER, BASEBAND AMPLIFIERS  
CCD IMAGING CHANNEL AMPLIFIERS  
OPA650 AND OPA620 UPGRADE  
RELATED PRODUCTS  
SINGLES  
DUALS  
TRIPLES  
QUADS  
FEATURES  
OPA354  
OPA690  
—
OPA2354  
OPA2690  
OPA2652  
OPA2822  
—
—
OPA4354 CMOS RR Output  
OPA3690  
—
—
—
High Slew Rate  
SOT23-8  
—
—
—
—
Low Noise  
—
OPA4820 Quad OPA820  
+5V  
+5V  
REFT  
(+3V)  
2kΩ  
2kΩ  
2kΩ  
RS  
24.9  
0.1µF  
VIN  
Ω
IN  
IN  
OPA820  
Ω
50  
100pF  
ADS850  
14−Bit  
10MSPS  
−5V  
402Ω  
0.1µF  
402Ω  
(+2V) (+1V)  
REFB VREF  
2kΩ  
SEL  
AC-Coupled, 14-Bit ADS850 Interface  
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.  
ꢀꢁ ꢂ ꢃꢄ ꢅ ꢆꢇ ꢂꢈ ꢃ ꢉꢆꢉ ꢊꢋ ꢌꢍ ꢎ ꢏꢐ ꢑꢊꢍꢋ ꢊꢒ ꢓꢔ ꢎ ꢎ ꢕꢋꢑ ꢐꢒ ꢍꢌ ꢖꢔꢗ ꢘꢊꢓ ꢐꢑꢊ ꢍꢋ ꢙꢐ ꢑꢕꢚ ꢀꢎ ꢍꢙꢔ ꢓꢑꢒ  
ꢓ ꢍꢋ ꢌꢍꢎ ꢏ ꢑꢍ ꢒ ꢖꢕ ꢓ ꢊ ꢌꢊ ꢓ ꢐ ꢑꢊ ꢍꢋꢒ ꢖ ꢕꢎ ꢑꢛꢕ ꢑꢕ ꢎ ꢏꢒ ꢍꢌ ꢆꢕꢜ ꢐꢒ ꢇꢋꢒ ꢑꢎ ꢔꢏ ꢕꢋꢑ ꢒ ꢒꢑ ꢐꢋꢙ ꢐꢎ ꢙ ꢝ ꢐꢎ ꢎ ꢐ ꢋꢑꢞꢚ  
ꢀꢎ ꢍ ꢙꢔꢓ ꢑ ꢊꢍ ꢋ ꢖꢎ ꢍ ꢓ ꢕ ꢒ ꢒ ꢊꢋ ꢟ ꢙꢍ ꢕ ꢒ ꢋꢍꢑ ꢋꢕ ꢓꢕ ꢒꢒ ꢐꢎ ꢊꢘ ꢞ ꢊꢋꢓ ꢘꢔꢙ ꢕ ꢑꢕ ꢒꢑꢊ ꢋꢟ ꢍꢌ ꢐꢘ ꢘ ꢖꢐ ꢎ ꢐꢏ ꢕꢑꢕ ꢎ ꢒꢚ  
Copyright 2004, Texas Instruments Incorporated  
www.ti.com  
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