
TRF2050
LOW-VOLTAGE 1.2-GHz FRACTIONAL-N/INTEGER-N SYNTHESIZER
SLWS030E– JUNE 1996 – REVISED OCTOBER 2000
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Terminal Functions
TERMINAL
I/O
DESCRIPTION
NAME
NO.
I/O
DESCRIPTION
AUXIN
10
I
Auxiliary channel RF input
CLOCK
1
I
Serial interface clock signal
DATA
2
I
Serial interface data signal
LOCK/
TEST
18
O
Lock detector/test mode output
PHA
11
O
Auxiliary charge pump output
PHI
13
O
Integral charge pump output
PHP
14
O
Proportional charge pump output
RFIN
5
I
Prescaler positive RF input
RFIN
6
I
Prescaler negative RF input
REFIN
8
I
Reference frequency input signal
RA
9
I
Resistor to VSSA sets auxiliary charge pump reference current
RN
16
I
Resistor to VSSA sets proportional and integral charge pump reference current
RF
17
I
Resistor to VSSA sets compensation charge pump reference current
STROBE
3
I
Serial interface strobe signal
TSETUP
19
I
Test setup for pin 18. For lock detect output, pin 19 connects to VCC through a pullup resistor; for test mode output,
pin 19 terminates to ground.
VCCP
7
Prescaler positive supply voltage
VDD
20
Digital supply voltage
VDDA
15
Analog supply voltage
VSS
4
Digital ground
VSSA
12
Analog ground
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VCCP, VDD, VDDA (see Note 1)
– 0.6 V to 5.6 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, logic signals
– 0.6 V to 5.6 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating ambient temperature range, TA
–55
°C to 85°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg
–65
°C to 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: Voltage values are with respect to VSSA.