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PDF UMA1021 Data sheet ( Hoja de datos )
| Número de pieza | UMA1021 | |
| Descripción | Low-voltage frequency synthesizer for radio telephones | |
| Fabricantes | NXP Semiconductors | |
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INTEGRATED CIRCUITS
DATA SHEET
UMA1021AM
Low-voltage frequency synthesizer
for radio telephones
Product specification
Supersedes data of 1998 Mar 03
File under Integrated Circuits, IC17
1998 Nov 19
1 page  
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Table 1 Bit allocation; note 1
FIRST IN
REGISTER BIT ALLOCATION
DATA FIELD
dt16 dt15 dt14 dt13 dt12 dt11 dt10 dt9 dt8 dt7 dt6 dt5 dt4 dt3 dt2 dt1 dt0
test bits; note 2
X X X X OOL(3) X CR1(4) CR0 X X sPON(5) X X X X X X
PM16(6)
main divider coefficient
PM0
X X X X X X PR10(7)
reference divider coefficient
PR0
ad3
0
0
0
0
LAST IN
ADDRESS
ad2 ad1 ad0
00 0
00 1
10 0
10 1
Notes
1. X = don’t care.
2. The test register (address 0000) should not be programmed with any other values except all zeros for normal operation.
3. Bit OOL sets the Out-Of-Lock detector (1 = enabled).
4. Bits CR1 and CR0 set the charge pump current ratio (see Table 2).
5. Bit sPON sets the software power-up for the synthesizer (see Table 3).
6. PM16 is the MSB of the main divider coefficient.
7. PR10 is the MSB of the reference divider coefficient.
Table 2 Charge pump current ratio; note 1
BIT CR1
0
0
1
1
BIT CR0
0
1
0
1
CHARGE PUMP
CURRENT
10 × Iset
18 × Iset
13 × Iset
17 × Iset
Note
1. Reference current for charge pump: Iset = R-V----ss---ee--tt
Table 3 Power-on programming
PIN PON(1)
BIT sPON(2)
L
X
H
Notes
1. Signal level
a) L = LOW.
b) X = don’t care.
c) H = HIGH.
2. X = don’t care.
X
0
1
SYNTHESIZER
STATE
off
off
on
5 Page 
Philips Semiconductors
Low-voltage frequency synthesizer for
radio telephones
Product specification
UMA1021AM
handbook, full pagewidth
12 Ω
100 4.7
nF µF
control
RF VCO
out
positive supply
LOCK
1
16 ISET
5.6 kΩ
(1)
(1)
CP 2
(1) (1) 12 Ω
(1) VDD2 3
15 VCC
100 nF
14 GND(CP)
1 nF 18 Ω 18 Ω
100 nF
VSS3 4
13 XTAL
UMA1021AM
56 pF
RFI 5
12 VDD1
18 Ω
56 Ω
56 pF
positive supply
to 1st mixer
1 kΩ
VSS2 6
PON 7
11 E
10 DATA
positive supply
12 Ω 12 Ω 12 Ω
100 nF
1 nF
fosc VCC
VTCXO
GND Vcontrol
100 nF
VSS1 8
9 CLK
12 Ω 12 Ω 12 Ω
3-wire bus
MGL408
(1) Values depend on application.
Fig.5 Typical test and application diagram.
1998 Nov 19
11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet UMA1021.PDF ] | |
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