ML2722 Datasheet, PDF (1/28 Pages) Micro Linear Corporation – 900MHz Low-IF 1.5Mbps FSK Transceiver Final Datasheet

ML2722
900MHz Low-IF 1.5Mbps FSK Transceiver
Final Datasheet
GENERAL DESCRIPTION
FEATURES
The ML2722 is a fully integrated 1.5Mbps frequency
shift keyed (FSK) transceiver that operates in the
unlicensed 900MHz ISM frequency band. The device
has been optimized for digital cordless telephone
applications and includes all the frequency generation,
receive and transmit functions. Automatically adjusted
filters eliminate mechanical tuning. The transmitter
generates a -1dBm FSK output signal. The single
conversion Low-IF receiver has all the sensitivity and
selectively advantages of a traditional super-
heterodyne without requiring costly, bulky external
filters, while providing the integration advantages of
direct conversion.
The phase locked loop (PLL) synthesizer is completely
integrated, including the voltage controlled oscillator
(VCO), tuning circuits, and VCO resonator. This allows
the ML2722 to be used in frequency hopped spread
spectrum (FHSS) applications.
The ML2722 contains internal voltage regulation. It also
contains PLL and transmitter configuration registers.
The device can be placed in a low power standby mode
for current sensitive applications. It is packaged in a
“Green” Pb-Free 32TQFP.
ƒ Single chip ISM band 900MHz Radio Transceiver
with -1dBm transmit output power
ƒ 1.5Mbps maximum data rate
ƒ Typical receiver sensitivity: -95dBm at 12.5% CER
ƒ Fully integrated frequency synthesizer with internal
VCO resonator
ƒ Automatic filter calibration: Requires no mechanical
tuning adjustments during manufacturing
ƒ Low IF Receiver: No external IF filters required
ƒ Control outputs correctly sequence and control
external PA
ƒ 3-wire control interface
ƒ Analog RSSI output
APPLICATIONS
ƒ 900MHz FSK Data Transceivers
- Digital Cordless Phones
- Wireless Streaming Media
- Wireless PC Peripherals
PIN CONFIGURATION
BLOCK DIAGRAM
XCEN
RXON
PAON
EN
DATA
CLK
TPC/TPQ
VSS
32 31 30 29 28 27 26 25
1
24
2
23
3
22
4
21
5
20
6
19
7
18
8
9
10 11 12 13 14 15 1617
VCC5
TRFO
RVCC4
RRFI
GND
GND
GND
GND
ORDERING INFORMATION
PART NUMBER TEMPERATURE RANGE
PACKAGE
ML2722DH
ML2722DH-T
-10^oC to +60 ^oC
-10^oC to +60 ^oC
32TQFP 7x7x1mm
32TQFP 7x7x1mm
PACK (QTY)
Antistatic Tray (250)
Tape & Reel (2500)
DS2722-F-06
DECEMBER 2005