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S1M8833のメーカーはSamsung semiconductorです、この部品の機能は「(S1M8831A / S1M8833) FRACTIONAL-N RF/INTEGER-N IF DUAL PLL」です。 |
部品番号 | S1M8833 |
| |
部品説明 | (S1M8831A / S1M8833) FRACTIONAL-N RF/INTEGER-N IF DUAL PLL | ||
メーカ | Samsung semiconductor | ||
ロゴ | |||
このページの下部にプレビューとS1M8833ダウンロード(pdfファイル)リンクがあります。 Total 30 pages
FRACTIONAL-N RF/INTEGER-N IF DUAL PLL
S1M8831A/33
INTRODUCTION
The S1M8831A/33 is a Fractional-N frequency synthesizer with integrated
prescalers, designed for RF operation up to 1.2GHz/K-PCS and for IF
operation up to 520MHz. The fractional-N synthesizer allows fast-locking,
low phase noise phase-locked loops to be built easily, thus having rapid
channel switching and reducing standby time for extended battery life. The
S1M8831A/33 based on ∑ - ∆ fractional-N techniques solves the fractional
spur problems in other fractional-N synthesizers based on charge pump
compensation. The synthesizer also has an additional feature that the
www.DataSheePt4CUS.c/oCmDMA channel frequency in steps of 10kHz can be accurately
programmed.
24-QFN-3.5×4.5
The S1M8831A/33 contains dual-modulus prescalers. The S1M8831A RF
synthesizer adopts an 8/9 prescaler (16/17 for the S1M8833) and the IF
synthesizer adopts an 8/9 prescaler. Phase detector gain is user-programmable for maximum flexibility to
address IS-95 CDMA and IMT2000. Various program-controlled power down options as well as low supply
voltage help the design of wireless cell phones having minimum power consumption.
Using the Samsung's proprietary digital phase-locked-loop technique, the S1M8831A/33 has a linear phase
detector characteristic and can be used for very stable, low noise PLLs. Supply voltage can range from 2.7V to
4.0V. The S1M8831A/33 is available in a 24-QFN package.
FEATURES
• High operating frequency dual synthesizer
— S1M8831A: 0.71 to 1.2GHz(RF)/ 45 to 520MHz(IF)
— S1M8833: 1.6 to 1.65GHz(RF)/ 45 to 520MHz(IF)
• Operating voltage range: 2.7 to 4.0V
• Low current consumption (S1M8831A: 5.0mA, S1M8833: 7.0mA)
• Selectable power saving mode (ICC = 1uA typical @ 3V)
• Dual-modulus prescaler and Fractional-N/Integer-N:
— S1M8831A
— S1M8833
— S1M8831A/33
(RF) 8/9
(RF) 16/17
(IF) 8/9
Fractional-N
Fractional-N
Integer-N
• Excellent in-band phase noise ( – 85dBc/Hz @ PCS, -90dBc/Hz @CDMA)
Improved fractional spurious performance ( < 80dBc)
• Frequency resolution (= 10kHz/64 @ fref = 9.84MHz)
• Fast channel switching time: < 500us
• Programmable charge pump output current: from 50uA to 800uA in 50uA steps
• Programmability via on-chip serial bus interface
1
1 Page FRACTIONAL-N RF/INTEGER-N IF DUAL PLL
BLOCK DIAGRAM
S1M8831A/33
OUT0
24
OUT1
23
VDDIF
22
VDDRF 1
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VPRF 2
CPORF 3
DGND 4
finRF 5
RF
LD
RF
Charge
Pump
RF
Phase
Detector
foLD Data Out
Multiplexer
IF
LD
IF
Phase
Detector
IF
Charge
Pump
RF Prescaler
+-
Prescaler
Control
RF
Programmable
Counter
IF Prescaler
IF
Programmable
Counter
Prescaler
Control
-+
21 VPIF
20 CPOIF
19 DGND
18 finIF
finRF 6
GNDRF 7
OSCx 8
RF N-Latch
Frac-N Latch &
Σ−∆ Modulator
RF R-Latch
IF N-Latch
24-Bit Shift Register
2-Bit
Control
IF R-Latch
17 finIF
16 GNDIF
15 LE
OSCin 9
RF Reference
Counter
IF Reference
Counter
10
foLD
11
RF_EN
12
IF_EN
14 DATA
13 CLOCK
3
3Pages S1M8831A/33
FRACTIONAL-N RF/INTEGER-N IF DUAL PLL
PIN DESCRIPTION (Continued)
Pin No.
21
22
23
Pin Name
VPIF
VDDIF
OUT1
24
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OUT0
I/O Descriptions
– Power supply for IF charge pump. Must be ≥ VDDRF and VDDIF.
– IF PLL power supply (2.7V to 4.0V). Must be equal to VDDRF.
O Programmable CMOS output. Level of the output is controlled by
RF_N[19] bit.
O Programmable CMOS output. Level of the output is controlled by
RF_N[18] bit. In the speedy lock mode, the OUT0 and OUT1 pins can be
utilized as synchronous switches between active low and tri-state.
6
6 Page | |||
ページ | 合計 : 30 ページ | ||
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PDF ダウンロード | [ S1M8833 データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
S1M8831A | (S1M8831A / S1M8833) FRACTIONAL-N RF/INTEGER-N IF DUAL PLL | Samsung semiconductor |
S1M8833 | (S1M8831A / S1M8833) FRACTIONAL-N RF/INTEGER-N IF DUAL PLL | Samsung semiconductor |
S1M8836 | FRACTIONAL-N RF/INTEGER-N IF DUAL PLL | Samsung semiconductor |
S1M8836X01-G0T0 | FRACTIONAL-N RF/INTEGER-N IF DUAL PLL | Samsung semiconductor |