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THS4509RGTR

更新时间： 2024-02-06 20:32:13
品牌 Logo 应用领域
美国国家半导体 - NSC 放大器
页数 文件大小 规格书
42页 1847K
描述
WIDEBAND, LOW-NOISE, LOW-DISTORTION, FULLY-DIFFERENTIAL AMPLIFIER

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中文翻译

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THS4509RGTR 数据手册

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THS4509  
www.ti.com  
SLOS454H –JANUARY 2005–REVISED NOVEMBER 2009  
WIDEBAND, LOW-NOISE, LOW-DISTORTION, FULLY-DIFFERENTIAL AMPLIFIER  
Check for Samples: THS4509  
1
FEATURES  
DESCRIPTION  
23  
•
Fully-Differential Architecture  
Centered Input Common-Mode Range  
Output Common-Mode Control  
Minimum Gain of 2 V/V (6 dB)  
Bandwidth: 1900 MHz  
•
•
•
•
•
•
•
•
•
•
•
•
•
The THS4509 is a wideband, fully-differential op amp  
designed for 5-V data acquisition systems. It has a  
low noise at 1.9 nV/√Hz, and low harmonic distortion  
of –75 dBc HD2 and –80 dBc HD3 at 100 MHz with  
2 VPP, G = 10 dB, and 1 kΩ load. Slew rate is high at  
6600 V/μs, and with settling time of 2 ns to 1% (2-V  
step), it is ideal for pulsed applications. It is designed  
for a minimum gain of 6 dB, but is optimized for gains  
of 10 dB.  
Slew Rate: 6600 V/μs  
1% Settling Time: 2 ns  
HD2: –75 dBc at 100 MHz  
HD3: –80 dBc at 100 MHz  
To allow for dc coupling to analog-to-digital  
converters (ADCs), its unique output common-mode  
control circuit maintains the output common-mode  
voltage within 3-mV offset (typ) from the set voltage,  
when set within 0.5-V of midsupply, with less than  
4-mV differential offset voltage. The common-mode  
set point is set to midsupply by internal circuitry,  
which may be overdriven from an external source.  
OIP3: 37 dBm at 70 MHz  
Input Voltage Noise: 1.9 nV/√Hz (f > 10 MHz)  
Power-Supply Voltage: 3 V to 5 V  
Power-Supply Current: 37.7 mA  
Power-Down Current: 0.65 mA  
APPLICATIONS  
The input and output are optimized for best  
performance with the common-mode voltages set to  
midsupply. Along with high performance at low  
power-supply voltage, this design makes it ideal for  
high-performance, single-supply 5-V data acquisition  
systems. The combined performance of the THS4509  
in a gain of 10 dB driving the ADS5500 ADC,  
sampling at 125 MSPS, is 81-dBc SFDR and  
69.1-dBc SNR with a –1 dBFS signal at 70 MHz.  
•
5-V Data Acquisition Systems High  
Linearity ADC Amplifiers  
•
•
•
Wireless Communication  
Medical Imaging  
Test and Measurement  
250 W  
Mini-Circuits  
ADT2-1T  
1:1.4  
Mini-Circuits  
ADT2-1T  
1:1.4  
+VS = 5 V  
10 nF  
50 W  
VIN  
VOUT  
+
The THS4509 is offered in a quad, leadless QFN-16  
package (RGT), and is characterized for operation  
over the full industrial temperature range from –40°C  
to +85°C.  
953 W  
VCM  
THS4509  
-
10 nF  
50 W  
0.1 mF  
250 W  
VOUT  
Measured 3rd Order Intermodulation  
Spurious Signal Level  
-60  
= 20 dB  
VIN  
RELATED PRODUCTS  
-70  
-80  
-90  
COMMON-MODE RANGE OF  
DEVICE  
THS4508  
THS4509  
THS4511  
THS4513  
MIN. GAIN INPUT(1)  
6 dB  
6 dB  
0 dB  
0 dB  
–0.3 V to 2.3 V  
-100  
1.1 V to 3.9 V  
–0.3 V to 2.3 V  
1.1 V to 3.9 V  
-110  
-120  
0
50  
100  
150  
200  
250  
f - Frequency - MHz  
1. Assumes a 5-V single-ended power supply.  
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.  
2
3
PowerPAD is a trademark of Texas Instruments Incorporated.  
All other 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 the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2005–2009, Texas Instruments Incorporated  
 
 
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