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AD8334ACP-REEL7

更新时间： 2024-11-21 19:55:35
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亚德诺 - ADI 放大器
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14页 257K
描述
IC QUAD INSTRUMENTATION AMPLIFIER, 110 MHz BAND WIDTH, QCC64, 9 X 9 MM, MO-220VMMD, LFCSP-64, Instrumentation Amplifier

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AD8334ACP-REEL7 数据手册

 浏览型号AD8334ACP-REEL7的Datasheet PDF文件第2页浏览型号AD8334ACP-REEL7的Datasheet PDF文件第3页浏览型号AD8334ACP-REEL7的Datasheet PDF文件第4页浏览型号AD8334ACP-REEL7的Datasheet PDF文件第5页浏览型号AD8334ACP-REEL7的Datasheet PDF文件第6页浏览型号AD8334ACP-REEL7的Datasheet PDF文件第7页 
Quad Low Noise, Low Cost  
Variable Gain Amplifier  
Preliminary Technical Data  
AD8335  
FUNCTIONAL BLOCK DIAGRAM  
FEATURES  
Low Noise Preamplifier (PrA)  
Voltage Noise = 1.3 nV/√Hz Typical  
Current Noise = 2.4 pA/√Hz Typical  
NF = 7 dB (RS = RIN = 50Ω)  
Single Ended Input; Vin-max = 625 mVpp  
Active Input Match  
Input SNR (Noise BW = 20 MHz) = 92 dB  
VGA  
Differential Output  
64 PIN LFCSP  
51  
+
61  
60  
59  
55  
58  
52  
49  
47  
48  
46  
56  
50  
54  
43  
41  
42  
VOH1  
CMV1  
VOL1  
VGN1  
SL12  
-
63  
64  
PIP1  
+
ATTENUATOR  
20/28dB  
GAIN INT  
GAIN INT  
20/28dB  
18dB  
VMD1  
-48 to 0dB  
PMD1  
-
-
+
INTERPOLATOR  
INTERPOLATOR  
53  
5
VCM2  
POP2  
PON2  
PMD2  
PIP2  
VGN2  
VOL2  
CMV2  
VOH2  
4
Vout-max = 4 Vpp, RL= 500 Ω Diff.  
Gain Range (8 dB Output Gain Step)  
-10 dB to +38 dB – LO Gain Mode  
-2 dB to +46 dB – HI Gain Mode  
Accurate Linear-in-dB Gain Control  
PrA + VGA Performance  
-3 dB Bandwidth of 70 MHz  
Excellent Overload Performance  
Supply: +5 V  
-
+
1
+
ATTENUATOR  
18dB  
VMD2  
-48 to 0dB  
2
-
+
-
6
VIP2  
7
VIN2  
10  
11  
15  
16  
12  
13  
28  
VIN3  
VIP3  
39  
40  
38  
27  
31  
25  
35  
33  
34  
VOH3  
CMV3  
VOL3  
VGN3  
SL34  
-
PIP3  
+
+
ATTENUATOR  
20/28dB  
GAIN INT  
GAIN INT  
20/28dB  
18dB  
VMD3  
-48 to 0dB  
PMD3  
POP3  
PON3  
VCM3  
-
-
+
Power Consumption  
INTERPOLATOR  
INTERPOLATOR  
92 mW/channel (370 mW total)  
76 mW/channel (PrA Off; 305 mW total)  
Power Down  
VGN4  
VOL4  
CMV3  
VOH4  
+
17  
18  
PMD4  
PIP4  
-
APPLICATIONS  
Medical Imaging (Ultrasound, Gamma Cameras)  
Sonar  
Test and Measurement  
ATTENUATOR  
18dB  
VMD4  
22  
-48 to 0dB  
+
-
29  
32  
20  
21  
26  
23  
30  
Precise, Stable Wideband Gain Control  
Figure 1.  
Functional Block Diagram  
GENERAL DESCRIPTION  
Assuming a 20 MHz noise bandwidth (NBW), the Nyquist frequency  
for a 40 MHz ADC, the input SNR is 92 dB. The HILO pin optimizes  
the output SNR for 10 and 12 bit ADCs with 1 or 2 Vpp full-scale (FS)  
inputs.  
The AD8335 is a quad Variable Gain Amplifier (VGA) with low  
noise preamplifier intended for cost and power sensitive  
applications. AD8335 features four channels with 48 dB gain range;  
fully differential signal paths; and active input preamplifier  
matching. The AD8335 has an output gain switch of 8 dB and  
separate gain controls for each channel.  
Channels 1 and 2 are enabled through the EN12pin while channels 3  
and 4 are enabled through the EN34pin. For VGA only applications,  
the PrAs can be powered down, significantly reducing power  
consumption.  
The aggregate input referred voltage noise at maximum gain is 1.3  
nV/√Hz; the preamplifier (PrA) has 1.2 nV/√Hz. The PrA has a  
single-ended to differential gain of 8 (18.06 dB) and a maximum input  
The AD8335 is available in a 64 pin chip scale (9x9 mm) package  
signal capability is 625 mVPK-PK  
.
for the industrial temperature range of -40°C to +85°C.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106,  
U.S.A.  
REV. PrA 06/09/2004  
Information furnished by Analog Devices is believed to be accurate and reliable.  
However, no responsibility is assumed by Analog Devices for its use, nor for any  
infringements of patents or other rights of third parties that may result from its  
use. Specifications subject to change without notice. No license is granted by  
implication or otherwise under any patent or patent rights of Analog Devices.  
Trademarks and registered trademarks are the property of their respective  
companies.  
Tel: 781.329.4700  
Fax: 781.326.8703  
www.analog.com  
2004  
Analog Devices, Inc. All rights reserved.  
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