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PDF TSA6060 Data sheet ( Hoja de datos )
| Número de pieza | TSA6060 | |
| Descripción | Fast radio tuning PLL frequency synthesizer | |
| Fabricantes | NXP Semiconductors | |
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INTEGRATED CIRCUITS
DATA SHEET
TSA6060
Fast radio tuning PLL frequency
synthesizer
Product specification
Supersedes data of April 1994
www.FDilaetuanSdhereIentte4gUra.tceodmCircuits, IC01
1995 Nov 23
1 page  
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Philips Semiconductors
Fast radio tuning PLL frequency
synthesizer
Product specification
TSA6060
The bit organization of the 4 data bytes is shown in Fig.3. Further information is given in Tables 2, 3, 4 and 5.
The bits S0 to S16 (DB0: D7 to D1; DB1: D7 to D0; DB2: D1 to D0) together with bit FM/AM (DB2: D5) are used to set
the divider of the input frequency at inputs AMI (pin 7) or FMI (pin 5). If the system is in-lock the following is valid, as
shown in Table 1.
Table 1 System-in-lock (note 1).
FM/AM
0
1
INPUT FREQUENCY (fi)
(S2 × 20 + S3 × 21 ..... + S15 × 213 + S16 × 214) × fref
(S0 × 20 + S1 × 21 ..... + S15 × 215+ S16 × 216) × fref
Note
1. The minimum dividing ratio for the AM mode is 26 = 64 and for the FM mode is 28 = 256.
INPUT
AM
FM
Table 2 Bit CP is used to control the charge pump
current (DB0: D0).
CP CURRENT
0 LOW
1 HIGH
Table 5 Bit BS controls the open-collector band switch
output (DB2: D2).
BS BAND SWITCH OUTPUT
1 sink current
0 floating
Table 3 Bits REF1 and REF2 are used to set the
reference frequency applied to the phase
detector (DB2: D7 to D6).
The bit 8/4 MHz controls a divide-by-1/divide-by-2 divider
cell in the reference oscillator section. This allows the use
of a 4 MHz or 8 MHz crystal.
REF1
REF2
REFERENCE
FREQUENCY (kHZ) Table 6 Test mode.
00
1
T3 T2 T1
FUNCTION
01
10
10 0 X 0 normal
25 1 0 1 CP source
11
50 0 1 1 CP sink
Table 4 Bit FM/AM OPAMP controls the switch AM/FM,
FM/AM in the tuning voltage amplifier circuits
(DB2: D4).
FM/AM
OPERATIONAL
AMPLIFIER
1
SWITCH
FM/AM
closed
AM/FM
open
1 1 1 CP 3-state
0 0 1 CP sink + source
1 1 X BS = main divider output
1 0 X BS = reference divider output
The data byte DB3 must be set to 0.....0. It is also used for
test purposes (see Fig.3)).
0
open
closed
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Philips Semiconductors
Fast radio tuning PLL frequency
synthesizer
Product specification
TSA6060
For FM: VCO = 5 MHz/V; R2 = 10 kΩ; C4 = 68 nF; C6 = 3.9 nF.
For AM: VCO = 0.75 MHz/V; R1 = 47 kΩ; C3 = 440 nF; C5 = 0.47 nF.
Fig.8 Application example; loop filter dependent on VCO and tuning speed.
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