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參數資料
| 型號： | AD8339ACPZ-R7 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 調制器/解調器 |
| 英文描述： | 0 MHz - 50 MHz RF/MICROWAVE I/Q DEMODULATOR |
| 封裝： | 6 X 6 MM, ROHS COMPLIANT, MO-220-VJJD-2, LFCSP-40 |
| 文件頁數： | 1/36頁 |
| 文件大小： | 2970K |
| 代理商： | AD8339ACPZ-R7 |
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DC to 50 MHz, Quad I/Q Demodulator
and Phase Shifter
AD8339
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
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
www.analog.com
Fax: 781.461.3113
2007–2009 Analog Devices, Inc. All rights reserved.
FEATURES
Quad integrated I/Q demodulator
16 phase select on each output (22.5° per step)
Quadrature demodulation accuracy
Phase accuracy: ±1°
Amplitude imbalance: ±0.05 dB
Bandwidth
4LO: LF to 200 MHz
RF: LF to 50 MHz
Baseband: determined by external filtering
Output dynamic range: 160 dB/Hz
LO drive: >0 dBm (50 Ω), single-ended sine wave
Supply: ±5 V
Power consumption: 73 mW/channel (290 mW total)
Power-down via SPI (each channel and complete chip)
APPLICATIONS
Medical imaging (CW ultrasound beamforming)
Phased array systems
Radar
Adaptive antennas
Communication receivers
FUNCTIONAL BLOCK DIAGRAM
AD8339
SCLK
SDO
CSB
RF2P
RF2N
4LOP
4LON
RF3P
RF3N
VPOS
VNEG
SDI
I1OP
RF4P
RF4N
RF1P
RF1N
I2OP
Q2OP
I3OP
Q3OP
I4OP
Q4OP
Q1OP
RSTS
Φ
SERIAL
INTERFACE
÷4
BIAS
0°
90°
06
58
7-
0
01
Figure 1.
GENERAL DESCRIPTION
The AD8339 is a quad I/Q demodulator configured to be
driven by a low noise preamplifier with differential outputs. It is
of VGAs. The part consists of four identical I/Q demodulators
with a 4× local oscillator (LO) input that divides the signal and
generates the necessary 0° and 90° phases of the internal LO
that drive the mixers. The four I/Q demodulators can be used
independently of each other (assuming that a common LO is
acceptable) because each has a separate RF input.
Continuous wave (CW) analog beamforming (ABF) and I/Q
demodulation are combined in a single 40-lead, ultracompact
chip scale device, making the AD8339 particularly applicable in
high density ultrasound scanners. In an ABF system, time
domain coherency is achieved following the appropriate phase
alignment and summation of multiple receiver channels. A reset
pin synchronizes multiple ICs to start each LO divider in the
same quadrant. Sixteen programmable 22.5° phase increments
are available for each channel. For example, if Channel 1 is used
as a reference and Channel 2 has an I/Q phase lead of 45°, the
user can phase align Channel 2 with Channel 1 by choosing the
appropriate phase select code.
The mixer outputs are in current form for convenient summa-
tion. The independent I and Q mixer output currents are summed
and converted to a voltage by a low noise, high dynamic range,
current-to-voltage (I-V) transimpedance amplifier, such as the
combined signal is applied to a high resolution analog-to-digital
converter (ADC), such as the AD7665 (16-bit, 570 kSPS).
An SPI-compatible serial interface port is provided to easily
program the phase of each channel; the interface allows daisy
chaining by shifting the data through each chip from SDI to SDO.
The SPI also allows for power-down of each individual channel
and the complete chip. During power-down, the serial interface
remains active so that the device can be programmed again.
The dynamic range is typically 160 dB/Hz at the I and Q
outputs. The AD8339 is available in a 6 mm × 6 mm, 40-lead
LFCSP and is specified over the industrial temperature range of
40°C to +85°C.
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| AD8339ACPZ-RL | 功能描述:IC DEMODULATOR I/Q QUAD 40LFCSP RoHS:是 類別:RF/IF 和 RFID >> RF 解調器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 功能:解調器 LO 頻率:- RF 頻率:70MHz ~ 300MHz P1dB:-9dBm 增益:- 噪音數據:6.36dB 電流 - 電源:41.5mA 電源電壓:2.7 V 封裝/外殼:28-WFQFN 裸露焊盤 供應商設備封裝:28-TQFN-EP（5x5） 包裝:帶卷 (TR) |
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| AD834_12 | 制造商:AD 制造商全稱:Analog Devices 功能描述:500 MHz Four-Quadrant Multiplier |
| AD8340 | 制造商:AD 制造商全稱:Analog Devices 功能描述:400 MHz to 6 GHz Broadband Quadrature Modulator |
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