|
|
PDF SA7025 Data sheet ( Hoja de datos )
| Número de pieza | SA7025 | |
| Descripción | Low-voltage 1GHz fractional-N synthesizer | |
| Fabricantes | Philips | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de SA7025 (archivo pdf) en la parte inferior de esta página. Total 22 Páginas | ||
|
No Preview Available !
INTEGRATED CIRCUITS
SA7025
Low-voltage 1GHz fractional-N
synthesizer
Product specification
IC17 Data Handbook
1996 Aug 6
Philips
Semiconductors
1 page  
Philips Semiconductors
1GHz low-voltage Fractional-N synthesizer
Product specification
SA7025
DC ELECTRICAL CHARACTERISTICS
VDD = VDDA = VCCP = 3V; TA = 25°C, unless otherwise specified.
SYMBOL
PARAMETER
TEST CONDITIONS
LIMITS
MIN TYP MAX
VSUPPLY Recommended operating conditions
VCCP = VDD, VDDA ≥ VDD
ISTANDBY Total standby supply currents
EM = EA = 0, IRN = IRF = IRA = 0
Operational supply currents: I = IDD + ICCP + IDDA; IRN = 25µA, IRA = 25µA, (see Note 5)
IAUX
Operational supply currents
EM = 0, EA = 1
IMAIN
Operational supply currents
EM = 1, EA = 0
ITOTAL Operational supply currents
EM = EA = 1
Digital inputs CLK, DATA, STROBE
2.7
5.5
50 500
3.5
5.5
7.5
VIH High level input voltage range
VIL Low level input voltage range
Digital outputs LOCK
0.7xVDD
0
VDD
0.3xVDD
VOL Output voltage LOW
IO = 2mA
0.4
VOH Output voltage HIGH
IO = –2mA
VDD–0.4
Charge pumps: VDDA = 3V / IRX = 25µA or VDDA = 5V / IRX = 62.5µA, VPHX in range, unless otherwise specified. (See Note 16)
|IRX|
Setting current range for any setting re-
sistor
2.7V < VDDA < 5.5V
4.5V < VDDA < 5.5V
25
62.5
VPHOUT Output voltage range
0.7 VDDA–0.8
Charge pump PHA
|IPHA| Output current PHA
IRA = –62.5µA; VPHA = VDDA/213
400
500
600
IRA = –25µA; VPHA = VDDA/2
160 200 240
DIPHP_A
| IPHP_A|
Relative output current variation PHA
IRA = –62.5µA2, 13
26
∆IPHA_M Output current matching PHA pump
VDDA = 3V, IRA = 25µA
VDDA = 5V, IRA = 62.5µA
±50
±65
Charge pump PHP, normal mode1, 4, 6 VRF = VDDA
|IPHP_N| Output current PHP
IRN = –62.5µA; VPHP = VDDA/213
440
550
660
IRN = –25µA; VPHP = VDDA/2
175 220 265
DIPHP_N
IPHP_N
Relative output current variation PHP
∆IPHP_N_M
Output current matching PHP
normal mode
Charge pump PHP, speed-up mode 1, 4, 7 VRF = VDDA
|IPHP_S| Output current PHP
DIPHP_S
IPHP_S
Relative output current variation PHP
∆IPHP_S_M
Output current matching PHP
speed-up mode
Charge pump PHI, speed-up mode 1, 4, 8 VRF = VDDA
|IPHI|
Output current PHI
IRN = –62.5µA2, 13
VDDA = 3V, IRA = 25µA
VDDA = 5V, IRA = 62.5µA
IRN = –62.5µA; VPHP = VDDA/213
IRN = –25µA; VPHP = VDDA/2
IRN = –62.5µA2, 13
VDDA = 3V, IRA = 25µA
VDDA = 5V, IRA = 62.5µA
IRN = –62.5µA; VPHI = VDDA/213
IRN = –25µA; VPHI = VDDA/2
2.20
0.85
4.4
1.75
26
±50
±65
2.75 3.30
1.1 1.35
26
±250
±300
5.5 6.6
2.2 2.65
DIPHI
IPHI
Relative output current variation PHI
IRN = –62.5µA2, 13
∆IPHI_M Output current matching PHI pump
VDDA = 3V, IRA = 25µA
VDDA = 5V, IRA = 62.5µA
Fractional compensation PHP, normal mode 1, 9 VRN = VDDA, VPHP = VDDA/2
IPHP_F_N
Fractional compensation output current
PHP vs FRD3
IRF = –62.5µA;FRD = 1 to 713
IRF = –25µA;FRD = 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
5 Page 
Philips Semiconductors
1GHz low-voltage Fractional-N synthesizer
Product specification
SA7025
LAST IN
WORD
MSB
D31
A1 0 NF
D23
A0 0 NF
NM1
NM1
NM2
NM3
NM2
LSB
D0 FIRST IN
CN
D0
NM2
NM3
NM2
PR = “01”
PR = “10”
B 1 0 00 0 0 00
CN
CK CL PR
C 1 0 01
NA
P
A
0
D 1 0 10
NR
FL
SM
E
M
SA
E MO
A ON
DG
TT
E 1 1 11 0 00
10
0
D23
ADDRESS BITS
TEST BITS
Figure 6. Serial Input Word Format
D0
SR00605
Current Settings
The SA7025 has 3 current setting pins: RA, RN and RF. The active
charge pump currents and the fractional compensation currents are
linearly dependent on the current connected between the current
setting pin and VSS. The typical value R (current setting resistor)
can be calculated with the formula:
R
+
VDDA
*
0.9 * 150
IR
ǸIR
The current can be set to zero by connecting the corresponding pin
to VDDA.
Auxiliary Output Charge Pumps
The auxiliary charge pumps on pin PHA are driven by the auxiliary
phase detector and the current value is determined by the external
resistor RA at pin RA. The active charge pump current is typically:
|IPHA| + 8 @ IRA
Main Output Charge Pumps and Fractional
Compensation Currents
The main charge pumps on pin PHP and PHI are driven by the main
phase detector and the current value is determined by the current at
pin RN and via a number of DACs which are driven by registers of
the serial input. The fractional compensation current is determined
by the current at pin RF, the contents of the fractional accumulator
FRD and a number of DACs driven by registers from the serial input.
The timing for the fractional compensation is derived from the
reference divider. The current is on during 1 input reference cycle
before and 1 cycle after the output signal to the phase comparator.
Figure 9 shows the waveforms for a typical case.
1996 Aug 6
11
11 Page | ||
| Páginas | Total 22 Páginas | |
| PDF Descargar | [ Datasheet SA7025.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| SA702 | Divide by: 64/65/72 triple modulus low power ECL prescaler | Philips |
| SA702 | SILICON GATE ENHANCEMENT MODE RF POWER VDMOS TRANSISTOR |  Polyfet RF Devices |
| SA7025 | Low-voltage 1GHz fractional-N synthesizer | Philips |
| SA7026 | 1.3GHz low voltage fractional-N dual frequency synthesizer | Philips |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |