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參數(shù)資料
| 型號： | AD831AP |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 衰減器 |
| 英文描述： | Low Distortion Mixer |
| 中文描述： | RF/MICROWAVE DOUBLE BALANCED MIXER |
| 封裝： | PLASTIC, LCC-20 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 225K |
| 代理商： | AD831AP |
FUNCT IONAL BLOCK DIAGRAM
A
I
V
I
A
GND
VN
RFP
RFN
VN
V
L
L
V
G
BIAS
VN
OUT
VFB
COM
AD831
50
50
13
9
10
11
12
6
7
8
4
5
14
15
16
17
18
1
2
3
19
20
REV. B
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
a
LowDstortion Mxer
AD831
FEATURES
Doubly-Balanced Mixer
Low Distortion
+24 dBm Third Order Intercept (IP3)
+10 dBm 1 dB Compression Point
Low LO Drive Required: –10 dBm
Bandwidth
500 MHz RF and LO Input Bandwidths
250 MHz Differential Current IF Output
DC to >200 MHz Single-Ended Voltage IF Output
Single or Dual Supply Operation
DC Coupled Using Dual Supplies
All Ports May Be DC Coupled
No Lower Frequency Limit—Operation to DC
User-Programmable Power Consumption
APPLICATIONS
High Performance RF/IF Mixer
Direct to Baseband Conversion
Image-Reject Mixers
I/Q Modulators and Demodulators
PRODUCT DE SCRIPT ION
T he AD831 is a low distortion, wide dynamic range, monolithic
mixer for use in such applications as RF to IF down conversion
in HF and VHF receivers, the second mixer in DMR base sta-
tions, direct-to-baseband conversion, quadrature modula-
tion and demodulation, and doppler-shift detection in ultra-
sound imaging applications. T he mixer includes an LO driver
and a low-noise output amplifier and provides both user-pro-
grammable power consumption and 3rd-order intercept point.
T he AD831 provides a +24 dBm third-order intercept point for
–10 dBm LO power, thus improving system performance and
reducing system cost compared to passive mixers, by eliminating
the need for a high power LO driver and its attendant shielding
and isolation problems.
T he RF, IF, and LO ports may be dc or ac coupled when the
mixer is operating from
±
5 V supplies or ac coupled when oper-
ating from a single supply of 9 V minimum. T he mixer operates
with RF and LO inputs as high as 500 MHz.
T he mixer’s IF output is available as either a differential current
output or a single-ended voltage output. T he differential output
is from a pair of open collectors and may be ac coupled via a
transformer or capacitor to provide a 250 MHz output band-
width. In down-conversion applications, a single capacitor con-
nected across these outputs implements a low-pass filter to
reduce harmonics directly at the mixer core, simplifying output
filtering. When building a quadrature-amplitude modulator or
image reject mixer, the differential current outputs of two
AD831s may be summed by connecting them together.
An integral low noise amplifier provides a single-ended voltage
output and can drive such low impedance loads as filters, 50
amplifier inputs, and A/D converters. Its small signal bandwidth
exceeds 200 MHz. A single resistor connected between pins
OUT and FB sets its gain. T he amplifier’s low dc offset allows
its use in such direct-coupled applications as direct-to-baseband
conversion and quadrature-amplitude demodulation.
T he mixer’s SSB noise figure is 10.3 dB at 70 MHz using its
output amplifier and optimum source impedance. Unlike pas-
sive mixers, the AD831 has no insertion loss and does not re-
quire an external diplexer or passive termination.
A programmable-bias feature allows the user to reduce power
consumption, with a reduction in the 1 dB compression point
and third-order intercept. T his permits a tradeoff between dy-
namic range and power consumption. For example, the AD831
may be used as a second mixer in cellular and two-way radio
base stations at reduced power while still providing a substantial
performance improvement over passive solutions.
PRODUCT HIGHLIGHT S
1. –10 dBm LO Drive for a +24 dBm Output Referred T hird
Order Intercept Point
2. Single-Ended Voltage Output
3. High Port-to-Port Isolation
4. No Insertion Loss
5. Single or Dual Supply Operation
6. 10.3 dB Noise Figure
Analog Devices, Inc., 1995
One Technology Way, P.O. Box 9106, Norwood. MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AD831AP-REEL | 制造商:Analog Devices 功能描述:MIXER IC - Tape and Reel |
| AD831AP-REEL7 | 功能描述:IC MIXER LOW DISTORTION 20-PLCC RoHS:否 類別:RF/IF 和 RFID >> RF 混頻器 系列:AD831 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:100 系列:- RF 型:W-CDMA 頻率:2.11GHz ~ 2.17GHz 混頻器數(shù)目:1 增益:17dB 噪音數(shù)據(jù):2.2dB 次要屬性:- 電流 - 電源:11.7mA 電源電壓:2.7 V ~ 3.3 V 包裝:托盤 封裝/外殼:12-VFQFN 裸露焊盤 供應商設備封裝:12-QFN-EP（3x3） |
| AD831APZ | 功能描述:IC MIXER DWNCONV LOW DIST 20PLCC RoHS:是 類別:RF/IF 和 RFID >> RF 混頻器 系列:AD831 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:100 系列:- RF 型:W-CDMA 頻率:2.11GHz ~ 2.17GHz 混頻器數(shù)目:1 增益:17dB 噪音數(shù)據(jù):2.2dB 次要屬性:- 電流 - 電源:11.7mA 電源電壓:2.7 V ~ 3.3 V 包裝:托盤 封裝/外殼:12-VFQFN 裸露焊盤 供應商設備封裝:12-QFN-EP（3x3） |
| AD831APZ | 制造商:Analog Devices 功能描述:LOW DISTORTION MIXER PLCC20 831 |
| AD831APZ-REEL | 功能描述:IC MIXER LOW DISTORTION 20PLCC RoHS:是 類別:RF/IF 和 RFID >> RF 混頻器 系列:AD831 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:100 系列:- RF 型:W-CDMA 頻率:2.11GHz ~ 2.17GHz 混頻器數(shù)目:1 增益:17dB 噪音數(shù)據(jù):2.2dB 次要屬性:- 電流 - 電源:11.7mA 電源電壓:2.7 V ~ 3.3 V 包裝:托盤 封裝/外殼:12-VFQFN 裸露焊盤 供應商設備封裝:12-QFN-EP（3x3） |
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