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OPA835_12

更新时间： 2024-11-23 12:11:19
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德州仪器 - TI 运算放大器
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51页 1811K
描述
Ultra Low-Power, Rail-to-Rail Out, Negative Rail In, VFB Op Amp

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OPA835_12 数据手册

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OPA835  
OPA2835  
www.ti.com  
SLOS713D –JANUARY 2011–REVISED OCTOBER 2011  
Ultra Low-Power, Rail-to-Rail Out, Negative Rail In, VFB Op Amp  
Check for Samples: OPA835, OPA2835  
1
FEATURES  
DESCRIPTION  
Fabricated using the industry-leading BiCom-3x  
(SiGe complimentary bipolar) process, the OPA835  
and OPA2835 are single and dual ultra low-power,  
rail-to-rail output, negative rail input, voltage-feedback  
operational amplifiers designed to operate over a  
power supply range of 2.5 V to 5.5 V Single Supply  
and ±1.25 V to ±2.75 V dual supply. Consuming only  
250 µA per channel and a unity gain bandwidth of  
56MHz, these amplifiers set an industry leading  
power-to-performance ratio for rail-to-rail amplifiers.  
•
Ultra Low Power  
–
–
–
Supply Voltage: 2.5 V to 5.5 V  
Quiescent Current: 250 µA (typ)  
Power Down Mode: 0.5 µA (typ)  
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Bandwidth: 56 MHz  
Slew Rate: 160 V/µs  
Rise Time: 10 ns (2 VSTEP  
)
Settling Time: 45 ns (2VSTEP  
)
For battery powered portable applications where  
power is of key importance, the OPA835's and  
OPA2835's low power consumption and high  
frequency performance offers designers performance  
versus power not attainable in other devices. Coupled  
with a power savings mode to reduce current to <1.5  
μA, the device offers an attractive solution for high  
frequency amplifiers in battery powered applications.  
Overdrive Recovery Time: 195ns  
SNR: 0.00015% (–116.4dBc) at 1 kHz (1V RMS  
)
THD: 0.00003% (–130 dBc) at 1 kHz (1 VRMS  
)
HD2/HD3: –70 dBc/–73 dBc at 1 MHz (2 Vpp)  
Input Voltage Noise: 9.3 nV/rtHz (f = 100 kHz)  
Input Offset Voltage: 100 µV (500 µV max)  
CMRR: 113 dB  
The OPA835 and OPA2835 are offered in following  
package options:  
Output Current Drive: 40 mA  
RRO – Rail-to-Rail Output  
•
OPA835 Single: SOT23-6 (DBV), and 10 pin  
WQFN (RUN) with integrated gain resistors.  
Input Voltage Range: –0.2 V to 3.9 V  
•
OPA2835 Dual: SOIC-8 (D), VSSOP (MSOP) -10  
(DGS), and 10 pin WQFN (RUN).  
(5 V supply)  
•
Operating Temperature Range:  
–40°C–125°C  
The OPA835 RUN package option includes  
integrated gain setting resistors for smallest possible  
footprint on a printed circuit board (≈ 2mm x 2mm).  
By adding circuit traces on the PCB, gains of +1, -1,  
-1.33, +2, +2.33, -3, +4, -4, +5, -5.33, +6.33, -7, +8  
and inverting attenuations of -0.1429, -0.1875, -0.25,  
-0.33, -0.75 can be achieved. See Application  
Information section for details.  
APPLICATIONS  
•
•
•
•
•
•
•
Low Power Signal Conditioning  
Audio ADC Input Buffer  
Low Power SAR and ΔΣ ADC Driver  
Portable Systems  
The devices are characterized for operation over the  
extended industrial temperature range –40°C to  
125°C.  
Low Power Systems  
High Density Systems  
Ultrasonic Flow Meter  
OPA835 Related Products  
0
2.7V  
DESCRIPTION  
SINGLES  
DUALS  
OPA2830  
OPA2836  
TRIPLES  
QUADS  
OPA4830  
—
VSIG  
VSIG  
-20  
2.7V  
VS+  
0V  
1.35V  
100  
2.2nF  
4.02k  
4.02k  
Rail-to-Rail  
—
—
—
5V  
2.5V  
REF  
2k  
VIN  
-40  
-60  
VDD  
OPA835  
VS-  
+In  
Rail-to-Rail, Low  
Power  
OPA836  
ADS8326  
-In  
2k  
2k  
Rail-to-Rail, Fixed  
Gain  
OPA832  
OPA690  
OPA820  
OPA2832 OPA3832  
OPA2690 OPA3690  
—
—
-80  
-100  
-120  
-140  
General-Purpose, High  
Slew Rate  
Low-Noise, DC  
Precision  
OPA2822  
—
OPA4820  
0
20,000  
40,000  
60,000  
80,000  
100,000  
120,000  
Frequency (Hz)  
1
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.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2011, Texas Instruments Incorporated  
 
 
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