SA7025 Datasheet, PDF (5/22 Pages) NXP Semiconductors – Low-voltage 1GHz fractional-N synthesizer

Philips Semiconductors
1GHz low-voltage Fractional-N synthesizer
Product specification
SA7025
DC ELECTRICAL CHARACTERISTICS
V_DD = V_DDA = V_CCP = 3V; T_A = 25°C, unless otherwise specified.
SYMBOL
PARAMETER
TEST CONDITIONS
LIMITS
MIN
TYP
MAX
V_SUPPLY Recommended operating conditions
V_CCP = V_DD, V_DDA ≥ V_DD
2.7
I_STANDBY Total standby supply currents
EM = EA = 0, I_RN = I_RF = I_RA = 0
Operational supply currents: I = I_DD + I_CCP + I_DDA; I_RN = 25µA, I_RA = 25µA, (see Note 5)
I_AUX
Operational supply currents
EM = 0, EA = 1
I_MAIN
Operational supply currents
EM = 1, EA = 0
I_TOTAL Operational supply currents
EM = EA = 1
Digital inputs CLK, DATA, STROBE
5.5
50
500
3.5
5.5
7.5
V_IH
High level input voltage range
V_IL
Low level input voltage range
Digital outputs LOCK
0.7xV_DD
0
V_DD
0.3xV_DD
V_OL
Output voltage LOW
I_O = 2mA
0.4
V_OH
Output voltage HIGH
I_O = –2mA
V_DD–0.4
Charge pumps: V_DDA = 3V / I_RX = 25µA or V_DDA = 5V / I_RX = 62.5µA, V_PHX in range, unless otherwise specified. (See Note 16)
|I_RX|
Setting current range for any setting re-
sistor
2.7V < V_DDA < 5.5V
4.5V < V_DDA < 5.5V
25
62.5
V_PHOUT Output voltage range
0.7
V_DDA–0.8
Charge pump PHA
|I_PHA| Output current PHA
I_RA = –62.5µA; V_PHA = V_DDA/2¹³
400
500
600
I_RA = –25µA; V_PHA = V_DDA/2
160
200
240
DI_{PHP_A}
| I_{PHP_A}|
Relative output current variation PHA
I_RA = –62.5µA^{2, 13}
2
6
∆I_{PHA_M} Output current matching PHA pump
V_DDA = 3V, I_RA = 25µA
V_DDA = 5V, I_RA = 62.5µA
±50
±65
Charge pump PHP, normal mode^{1, 4, 6} V_RF = V_DDA
|I_{PHP_N}| Output current PHP
I_RN = –62.5µA; V_PHP = V_DDA/2¹³
440
550
660
I_RN = –25µA; V_PHP = V_DDA/2
175
220
265
DI_{PHP_N}
I_{PHP_N}
Relative output current variation PHP
∆I_{PHP_N_M}
Output current matching PHP
normal mode
Charge pump PHP, speed-up mode ^{1, 4, 7} V_RF = V_DDA
|I_{PHP_S}| Output current PHP
DI_{PHP_S}
I_{PHP_S}
Relative output current variation PHP
∆I_{PHP_S_M}
Output current matching PHP
speed-up mode
Charge pump PHI, speed-up mode ^{1, 4, 8} V_RF = V_DDA
|I_PHI|
Output current PHI
I_RN = –62.5µA^{2, 13}
V_DDA = 3V, I_RA = 25µA
V_DDA = 5V, I_RA = 62.5µA
I_RN = –62.5µA; V_PHP = V_DDA/2¹³
I_RN = –25µA; V_PHP = V_DDA/2
I_RN = –62.5µA^{2, 13}
V_DDA = 3V, I_RA = 25µA
V_DDA = 5V, I_RA = 62.5µA
I_RN = –62.5µA; V_PHI = V_DDA/2¹³
I_RN = –25µA; V_PHI = V_DDA/2
2.20
0.85
4.4
1.75
2
6
±50
±65
2.75
3.30
1.1
1.35
2
6
±250
±300
5.5
6.6
2.2
2.65
DI_PHI
I_PHI
Relative output current variation PHI
I_RN = –62.5µA^{2, 13}
∆I_{PHI_M} Output current matching PHI pump
V_DDA = 3V, I_RA = 25µA
V_DDA = 5V, I_RA = 62.5µA
Fractional compensation PHP, normal mode ^{1, 9} V_RN = V_DDA, V_PHP = V_DDA/2
I_{PHP_F_N}
Fractional compensation output current
PHP vs F_RD3
I_RF = –62.5µA;F_RD = 1 to 7¹³
I_RF = –25µA;F_RD = 1 to 7
–625
–250
2
–400
–180
8
±500
±600
–250
–100
UNITS
V
µA
mA
mA
mA
V
V
V
V
µA
V
µA
%
µA
µA
%
µA
mA
%
µA
mA
%
µA
nA
1996 Aug 6
5