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AD61009ARS Datasheet

  • AD61009ARS

  • RF MIXER|SSOP|20PIN|PLASTIC

  • 24頁(yè)

  • ETC

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a
FEATURES
Complete Receiver-on-a-Chip: Monoceiver
廬
Mixer
鈥?5 dBm 1 dB Compression Point
鈥? dBm Input Third Order Intercept
500 MHz RF and LO Bandwidths
Linear IF Amplifier
Linear-in-dB Gain Control
Manual Gain Control
Quadrature Demodulator
On-Board Phase-Locked Quadrature Oscillator
Demodulates IFs from 1 MHz to 12 MHz
Can Also Demodulate AM, CW, SSB
Low Power
25 mW at 3 V
CMOS Compatible Power-Down
APPLICATIONS
GSM and TETRA Receivers
Satellite Terminals
Battery-Powered Communications Receivers
Low Power Mixer
3 V Receiver IF Subsystem
AD61009
PIN CONFIGURATION
20-Lead SSOP
(RS Suffix)
FDIN 1
COM1 2
PRUP 3
LOIP 4
RFLO 5
20 VPS1
19 FLTR
18 IOUT
17 QOUT
AD61009
16 VPS2
TOP VIEW 15 DMIP
RFHI 6
(Not to Scale)
14 IFOP
GREF 7
MXOP 8
VMID 9
IFHI 10
13 COM2
12 GAIN
11 IFLO
GENERAL DESCRIPTION
The AD61009 is a 3 V low power receiver IF subsystem for opera-
tion at input frequencies as high as 500 MHz and IFs from
400 kHz to 12 MHz. It consists of a mixer, IF amplifiers, I and
Q demodulators, a phase-locked quadrature oscillator, and a
biasing system with external power-down.
The AD61009鈥檚 low noise, high intercept mixer is a doubly-
balanced Gilbert cell type. It has a nominal 鈥?5 dBm input
referred 1 dB compression point and a 鈥? dBm input referred
third-order intercept. The mixer section of the AD61009 also
includes a local oscillator (LO) preamplifier, which lowers the
required LO drive to 鈥?6 dBm.
In MGC operation, the AD61009 accepts an external gain-
control voltage input from an external AGC detector or a DAC.
A quadrature VCO phase-locked to the IF drives the I and Q
demodulators. The I and Q demodulators can also demodu-
late AM; when the AD61009鈥檚 quadrature VCO is phase locked
to the received signal, the in-phase demodulator becomes a
synchronous product detector for AM. The VCO can also be
phase-locked to an external beat-frequency oscillator (BFO),
and the demodulator serves as a product detector for CW or
SSB reception. Finally, the AD61009 can be used to demodu-
late BPSK using an external Costas Loop for carrier recovery.
Monoceiver is a registered trademark of Analog Devices, Inc.
REV. 0
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
漏 Analog Devices, Inc., 2001

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