
TRF2056
LOW VOLTAGE 1.2GHz FRACTIONALN/INTEGERN SYNTHESIZER
SLWS111– NOVEMBER 2000
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
charge pump currents (see Figure 1) (continued)
proportional charge pump
, speed-up mode, VRF = VDDA (see speed-up mode operation)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
|IPHP-SM|
Output current PHP
VPHP = 0.5 VDDA
2
2.5
3
mA
IPHP-SM
|IPHP-SM|
Relative output current variation PHP (see Figure 1)
2%
10%
IPHP-SM
Output current matching PHP (see Figure 1)
VPHP = 0.5 VDDA
±300
A
integral charge pump, speed-up mode, VRF = VDDA (see speed-up mode operation)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
|IPHI-SM|
Output current PHI
VPHI = 0.5 VDDA
4.8
6
7.2
mA
IPHI-SM
|IPHI-SM|
Relative output current variation PHI (see Figure 1)
2%
8%
IPHI-SM
Output current matching PHI (see Figure 1)
VPHI = 0.5 VDDA
±600
A
fractional compensation proportional charge pump, normal mode, VRN = VDDA
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
|IPHP-F-NM|
Output current PHP vs fractional numerator
(see Note 3)
VPHP = 0.5 VDDA, FNUM = 1
1.25
A
NOTE: 3. Fractional compensation current is proportional to the numerator content of the fractional accumulator (FNUM).
charge pump leakage currents, VRN = VRA = VRF = VDDA
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
IPHP
Output current PHP
VPHP = 0.5 VDDA
±10
IPHI
Output current PHI
VPHI = 0.5 VDDA
±10
nA
IPHA
Output current PHA
VPHA = 0.5 VDDA
±10
ac electrical characteristics, VDD = VCCP = 2.9 V, VDDA = 3.9 V, TA = 25°C (unless otherwise noted)
main divider
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
fRFIN
RF input frequency
1.2
GHz
VID_RFIN
Differential RF input power
50-
W single-ended characteristic impedance; ac-coupled
–20
0
dBm