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PDF ADF7902 Data sheet ( Hoja de datos )
| Número de pieza | ADF7902 | |
| Descripción | ISM Band FSK Receiver IC | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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FEATURES
Single-chip, low power UHF receiver
Companion receiver to ADF7901 transmitter
Frequency range: 369.5 MHz to 395.9 MHz
Eight RF channels selectable with three digital inputs
Modulation parameters supported
FSK demodulation
2 kbps data rate
34.8 kHz frequency deviation
5.0 V supply voltage
Low power consumption
18.5 mA with receiver enabled
1 μA standby current
24-lead TSSOP
ISM Band
FSK Receiver IC
ADF7902
GENERAL DESCRIPTION
The ADF7902 is a low power UHF receiver. The device demodu-
lates frequency shift keyed (FSK) signals with 34.8 kHz frequency
deviation and at data rates of up to 2 kbps. There are eight specific
RF channels ranging from 369.5 MHz to 395.9 MHz on which the
receiver can operate. Each channel is selectable by configuring
three digital control lines.
The ADF7902 is designed for low power applications, consuming
18.5 mA (typical) during normal operation and 1 μA (maximum)
in standby mode.
ADF7902
LNA_1
LNA_2
LNA
VBAT1
CREG1
VBAT2
CREG2
LDO1
LDO2
LNA_RSET
BIAS
FUNCTIONAL BLOCK DIAGRAM
GND
CE
IF FILTER
FSK
DEMODULATOR
N DIVIDER
SELECT
VCO
CP
PFD
OSC
RSET CVCO VCOIN
CPOUT
Figure 1.
OSC1 OSC2
Rx_DATA
CH1_SEL
CH2_SEL
CH3_SEL
CLKOUT
CLKOUT_ENB
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 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.
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 Analog Devices, Inc. All rights reserved.
1 page  
ADF7902
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
Table 2.
Parameter
VBAT to GND1
Digital I/O Voltage to GND
LNA_1, LNA_2
Operating Temperature Range
Industrial (B Version)
Storage Temperature Range
Maximum Junction Temperature
TSSOP θJA Thermal Impedance
Lead Temperature, Soldering
Vapor Phase (60 sec)
Infrared (15 sec)
Rating
−0.3 V to +6.0 V
−0.3 V to VBAT + 0.3 V
0 dBm
−40°C to +85°C
−40°C to +125°C
125°C
150.4°C/W
235°C
240°C
1 GND = GND1 = GND1B = GND2 = 0 V.
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
ESD CAUTION
Rev. 0 | Page 4 of 12
5 Page 
ADF7902
OUTLINE DIMENSIONS
7.90
7.80
7.70
24 13
4.50
4.40
4.30
6.40 BSC
1 12
PIN 1
0.15
0.05
0.65
BSC
0.30
0.19
0.10 COPLANARITY
1.20
MAX
SEATING
PLANE
0.20
0.09
8°
0°
0.75
0.60
0.45
COMPLIANT TO JEDEC STANDARDS MO-153-AD
Figure 8. 24-Lead Thin Shrink Small Outline Package [TSSOP]
(RU-24)
Dimensions shown in millimeters
ORDERING GUIDE
Model
ADF7902BRUZ1
ADF7902BRUZ-RL1
ADF7902BRUZ-RL71
Temperature Range
−40°C to +85°C
−40°C to +85°C
−40°C to +85°C
1 Z = Pb-free part.
Package Description
24-Lead Thin Shrink Small Outline Package [TSSOP]
24-Lead Thin Shrink Small Outline Package [TSSOP], 13’’ REEL
24-Lead Thin Shrink Small Outline Package [TSSOP], 7’’ REEL
Package Option
RU-24
RU-24
RU-24
Rev. 0 | Page 10 of 12
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet ADF7902.PDF ] | |
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