SA8026DH Ver la hoja de datos (PDF) - Philips Electronics
Número de pieza
componentes Descripción
Fabricante
SA8026DH Datasheet PDF : 18 Pages
| |||
Philips Semiconductors
2.5GHz low voltage fractional-N dual frequency
synthesizer
Product specification
SA8026
GENERAL DESCRIPTION
The SA8026 BICMOS device integrates programmable dividers,
charge pumps and a phase comparator to implement a
phase-locked loop. The device is designed to operate from 3 NiCd
cells, in pocket phones, with low current and nominal 3 V supplies.
The synthesizer operates at VCO input frequencies up to 2.5 GHz.
The synthesizer has fully programmable main, auxiliary and
reference dividers. All divider ratios are supplied via a 3-wire serial
programming bus.
Separate power and ground pins are provided to the analog and
digital circuits. The ground leads should be externally short-circuited
to prevent large currents flowing across the die and thus causing
damage. VDDCP must be greater than or equal to VDD.
The charge pump current (gain) is set by an external resistance at
RSET pin. Passive loop filters could be used; the charge pump
operates within a wide voltage compliance range to provide a wider
tuning range.
FEATURES
• Low phase noise
• Low power
• Fully programmable main and auxiliary dividers
• Normal & Integral charge pumps outputs
• Fast Locking Adaptive mode design
• Internal fractional spurious compensation
• Hardware and software power down
• Split supply for VDD and VDDCP
LOCK 1
20 PON
TEST 2
19 STROBE
VDD 3
GND 4
18 DATA
17 CLOCK
RFin+ 5
16 REFin+
RFin– 6
15 REFin–
GNDCP 7
PHP 8
PHI 9
GNDCP 10
14 RSET
13 VDDCP
12 AUXin
11 PHA
SR01649
Figure 1. Pin Configuration
APPLICATIONS
• 350 to 2500 MHz wireless equipment
• Cellular phones (all standards)
• WLAN
• Portable battery-powered radio equipment.
QUICK REFERENCE DATA
SYMBOL
PARAMETER
VDD
VDDCP
IDDCP+IDD
IDDCP+IDD
fVCO
fAUX
fREF
fPC
Tamb
Supply voltage
Analog supply voltage
Total supply current
Total supply current in power-down mode
Input frequency
Input frequency
Crystal reference input frequency
Maximum phase comparator frequency
Operating ambient temperature
CONDITIONS
VDDCP w VDD
Main and Aux. on
MIN.
2.7
2.7
–
–
350
20
5
–
–40
TYP.
–
–
10
1
–
–
–
–
MAX.
5.5
5.5
12
–
2500
550
40
4
+85
UNIT
V
V
mA
µA
MHz
MHz
MHz
MHz
°C
ORDERING INFORMATION
TYPE NUMBER
PACKAGE
NAME
SA8026DH
TSSOP20
DESCRIPTION
Plastic thin shrink small outline package; 20 leads; body width 4.4 mm
VERSION
SOT360–1
1999 Nov 04
2
853–2141 22633
Share Link: 