參數(shù)資料
型號(hào)： AD8376ACPZ-R7
廠(chǎng)商： Analog Devices Inc
文件頁(yè)數(shù)： 1/24頁(yè)
文件大?。?/td> 0K
描述： IC AMP VGA DIFF DUAL 32LFCSP
產(chǎn)品培訓(xùn)模塊： Differential Circuit Design Techniques for Communication Applications
設(shè)計(jì)資源： Using AD8376 to Drive Wide Bandwidth ADCs for High IF AC-Coupled Appls (CN0002)
High Performance, Dual Channel IF Sampling Receiver (CN0140)
標(biāo)準(zhǔn)包裝： 1
放大器類(lèi)型： 可變?cè)鲆?br>
電路數(shù)： 2
輸出類(lèi)型： 差分
轉(zhuǎn)換速率： 5000 V/µs
-3db帶寬： 700MHz
電流 - 輸入偏壓： 900nA
電流 - 電源： 250mA
電壓 - 電源，單路/雙路(±)： 4.5 V ~ 5.5 V
工作溫度： -40°C ~ 85°C
安裝類(lèi)型： 表面貼裝
封裝/外殼： 32-VFQFN 裸露焊盤(pán)，CSP
供應(yīng)商設(shè)備封裝： 32-LFCSP-VQ（5x5）
包裝： 標(biāo)準(zhǔn)包裝
產(chǎn)品目錄頁(yè)面： 775 (CN2011-ZH PDF)
其它名稱(chēng)： AD8376ACPZ-R7DKR
Ultralow Distortion IF Dual VGA
Data Sheet
Rev. B
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
2007–2013 Analog Devices, Inc. All rights reserved.
FEATURES
Dual independent digitally controlled VGAs
Bandwidth of 700 MHz (3 dB)
Gain range: 4 dB to +20 dB
Step size: 1 dB ± 0.2 dB
Differential input and output
Noise figure: 8.7 dB @ maximum gain
Output IP3 of ~50 dBm at 200 MHz
Output P1dB of 20 dBm at 200 MHz
Dual parallel 5-bit control interface
Provides constant SFDR vs. gain
Power-down control
Single 5 V supply operation
32-lead, 5 mm x 5 mm LFCSP
APPLICATIONS
Differential ADC drivers
Main and diversity IF sampling receivers
Wideband multichannel receivers
Instrumentation
FUNCTIONAL BLOCK DIAGRAM
POST-AMP
α
CHANNEL A
GAIN
DECODER
CHANNEL B
GAIN
DECODER
A0
A1
A2
A3
A4
B0
B1
B2
B3
B4
GNDA
VCCA
GNDB
VCCB
AD8376
IPA+
IPA–
VCMA
VCMB
OPA+
ENBB
OPA–
ENBA
POST-AMP
α
IPB+
IPB–
OPB+
OPB–
06725-
001
Figure 1.
GENERAL DESCRIPTION
The AD8376 is a dual channel, digitally controlled, variable gain
wide bandwidth amplifier that provides precise gain control,
high IP3, and low noise figure. The excellent distortion perform-
ance and high signal bandwidth make the AD8376 an excellent
gain control device for a variety of receiver applications.
Using an advanced high speed SiGe process and incorporating
proprietary distortion cancellation techniques, the AD8376
achieves 50 dBm output IP3 at 200 MHz.
The AD8376 provides a broad 24 dB gain range with 1 dB
resolution. The gain of each channel is adjusted through
dedicated 5-pin control interfaces and can be driven using
standard TTL levels. The open-collector outputs provide a
flexible interface, allowing the overall signal gain to be set by
the loading impedance. Thus, the signal voltage gain is directly
proportional to the load.
Each channel of the AD8376 can be individually powered on by
applying the appropriate logic level to the ENBA and ENBB
power enable pins. The quiescent current of the AD8376 is
typically 130 mA per channel. When powered down, the
AD8376 consumes less than 5 mA and offers excellent input-to-
output isolation, lower than 50 dB at 200 MHz.
Fabricated on an Analog Devices, Inc., high speed SiGe process,
the AD8376 is supplied in a compact, thermally enhanced,
5 mm × 5mm 32-lead LFCSP package and operates over the
temperature range of 40°C to +85°C.
–40
–60
–50
–70
–90
–80
–100
–110
65
55
60
50
40
45
35
30
H
A
R
M
ON
IC
D
IS
TOR
TION
(
dB
c
),
OU
TP
U
T
@
2
V
p-
p
OIP
3
(
dB
m
),
OU
TP
U
T
@
3
dB
m
/TON
E
40
60
80
100
120
140
160
180
200
FREQUENCY (MHz)
06725-
052
OIP3
HD2
HD3
Figure 2. Harmonic Distortion and Output IP3 vs. Frequency
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