ADF7010BRUZ Datasheet, PDF (1/20 Pages) Analog Devices – High Performance ISM Band ASK/FSK/GFSK Transmitter IC

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FEATURES
Single Chip Low Power UHF Transmitter
902 MHz–928 MHz Frequency Band
On-Chip VCO and Fractional-N PLL
2.3 V–3.6 V Supply Voltage
Programmable Output Power
–16 dBm to +12 dBm, 0.3 dB Steps
Data Rates up to 76.8 kbps
Low Current Consumption
28 mA at 8 dBm Output
Power-Down Mode (<1 ␮A)
24-Lead TSSOP Package
APPLICATIONS
Low Cost Wireless Data Transfer
Wireless Metering
Remote Control/Security Systems
Keyless Entry
High Performance ISM Band
ASK/FSK/GFSK Transmitter IC
ADF7010
GENERAL DESCRIPTION
The ADF7010 is a low power OOK/ASK/FSK/GFSK UHF
transmitter designed for use in ISM band systems. It contains
an integrated VCO and sigma-delta fractional-N PLL. The
output power, channel spacing, and output frequency are pro-
grammable with four 24-bit registers. The fractional-N PLL
enables the user to select any channel frequency within the U.S.
902 MHz–928 MHz band, allowing the use of the ADF7010 in
frequency hopping systems.
It is possible to choose from the four different modulation
schemes: Binary or Gaussian Frequency Shift Keying (FSK/
GFSK), Amplitude Shift Keying (ASK), or On/Off Keying
(OOK). The device also features a crystal compensation register
that can provide Ϯ1 ppm resolution in the output frequency.
Indirect temperature compensation of the crystal can be accom-
plished inexpensively using this register.
Control of the four on-chip registers is via a simple 3-wire inter-
face. The devices operate with a power supply ranging from
2.3 V to 3.6 V and can be powered down when not in use.
OSC1
FUNCTIONAL BLOCK DIAGRAM
OSC2
، CLK
CLK_OUT CPV_DD CP_GND
C_REG
C_VCO
VCO_GND
OOK/ASK
V_DD
DV_DD
D_GND
TxCLK
TxDATA
LE
DATA
CLK
،R
PFD/
CHARGE
PUMP
OOK/ASK
FSK/GFSK
، FRACTIONAL N
SIGMA-DELTA
SERIAL
INTERFACE
FREQUENCY
COMPENSATION
CENTER
FREQUENCY
CE
A_GND
VCO
RF_OUT
PA
RF_GND
LDO
REGULATOR
C_REG
LOCK DETECT
MUXOUT
MUXOUT
R_SET
TEST
REV. 0
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use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
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© Analog Devices, Inc., 2002