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Details, datasheet, quote on part number:LMX2332LTMX
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| Part: | LMX2332LTMX |
| Category: | Timing Circuits => PLL (Phase locked loop) => Dual Integer PLLs |
| Description: | LMX2332L - 1.2 GHz/510 MHZ Pllatinum Low Power Dual Frequency Synthesizer For RF Personal Communications, Package: Evaluation Board, Pin Nb=- |
| Company: | National Semiconductor Corporation |
| Datasheet: | Download LMX2332LTMX datasheet File size : 593 kB |
| Request For quote: | Find where to buy LMX2332LTMX
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Datasheet text preview:
LMX2330L/LMX2331L/LMX2332L PLLatinum Low Power Dual Frequency Synthesizer for RF Personal Communications
October 2001
LMX2330L/LMX2331L/LMX2332L PLLatinumTM Low Power Dual Frequency Synthesizer for RF Personal Communications LMX2330L 2.5 GHz/510 MHz LMX2331L 2.0 GHz/510 MHz LMX2332L 1.2 GHz/510 MHz
General Description
The LMX233XL family of monolithic, integrated dual frequency synthesizers, including prescalers, is to be used as a local oscillator for RF and first IF of a dual conversion transceiver. It is fabricated using National's 0.5µ ABiC V silicon BiCMOS process. The LMX233XL contains dual modulus prescalers. A 64/65 or a 128/129 prescaler (32/33 or 64/65 in the 2.5 GHz LMX2330L) can be selected for the RF synthesizer and a 8/9 or a 16/17 prescaler can be selected for the IF synthesizer. LMX233XL, which employs a digital phase locked loop technique, combined with a high quality reference oscillator, provides the tuning voltages for voltage controlled oscillators to generate very stable, low noise signals for RF and IF local oscillators. Serial data is transferred into the LMX233XL via a three wire interface (Data, Enable, Clock). Supply voltage can range from 2.7V to 5.5V. The LMX233XL family features very low current consumption; LMX2330L -- 5.0 mA at 3V, LMX2331L -- 4.0 mA at 3V, LMX2332L -- 3.0 mA at 3V. The LMX233XL are available in a TSSOP 20-pin, CSP 24-pin surface mount plastic package, and thin CSP 20-pin surface mount plastic package.
Features
n Ultra low current consumption n 2.7V to 5.5V operation n Selectable synchronous or asynchronous powerdown mode: ICC = 1 µA typical at 3V n Dual modulus prescaler: LMX2330L (RF) 32/33 or 64/65 LMX2331L/32L (RF) 64/65 or 128/129 LMX2330L/31L/32L (IF) 8/9 or 16/17 n Selectable charge pump TRI-STATE ® mode n Selectable charge pump current levels n Selectable FastlockTM mode n Upgrade and compatible to LMX233XA family
Applications
n Portable Wireless Communications (PCS/PCN, cordless) n Cordless and cellular telephone systems n Wireless Local Area Networks (WLANs) n Cable TV tuners (CATV) n Other wireless communication systems
Functional Block Diagram
01280601
© 2001 National Semiconductor Corporation
DS012806
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LMX2330L/LMX2331L/LMX2332L
Connection Diagrams
Chip Scale Package (SLB) (Top View) Thin Shrink Small Outline Package (TM) (Top View)
01280602
Order Number LMX2330LTM, LMX2331LTM or LMX2332LTM Order Number LMX2330LTMX, LMX2331LTMX, or LMX2332LTMX NS Package Number MTC20
01280639
Order Number LMX2330LSBX, LMX2331LSLBX or LMX2332LSLBX NS Package Number SLB24A 20-Pin Thin Chipscale Package (SLD) (Top View)
01280640
Order Number LMX2330LSLDX, LMX2331LSLDX, or LMX2332LSLDX NS Package Number SLD20A
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LMX2330L/LMX2331L/LMX2332L
Pin Descriptions
Pin No. Pin No. Pin No. LMX233XLSLD LMX233XLSLB LMX233XLTM 20-pin Thin 24-pin CSP 20-pin TSSOP CSP Package Package Package 20 24 1 Pin Name VCC1 I/O Description
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Power supply voltage input for RF analog and RF digital circuits. Input may range from 2.7V to 5.5V. VCC1 must equal VCC2. Bypass capacitors should be placed as close as possible to this pin and be connected directly to the ground plane. Power Supply for RF charge pump. Must be VCC. Internal charge pump output. For connection to a loop filter for driving the input of an external VCO. Ground for RF digital circuitry. RF prescaler input. Small signal input from the VCO. RF prescaler complementary input. A bypass capacitor should be placed as close as possible to this pin and be connected directly to the ground plane. Capacitor is optional with some loss of sensitivity. Ground for RF analog circuitry. Oscillator input. The input has a VCC/2 input threshold and can be driven from an external CMOS or TTL logic gate. Ground for IF digital, MICROWIRETM, FoLD, and oscillator circuits. Multiplexed output of the RF/IF programmable or reference dividers, RF/IF lock detect signals and Fastlock mode. CMOS output (see Programmable Modes). High impedance CMOS Clock input. Data for the various counters is clocked in on the rising edge, into the 22-bit shift register. Binary serial data input. Data entered MSB first. The last two bits are the control bits. High impedance CMOS input. Load enable high impedance CMOS input. When LE goes HIGH, data stored in the shift registers is loaded into one of the 4 appropriate latches (control bit dependent). Ground for IF analog circuitry. IF prescaler complementary input. A bypass capacitor should be placed as close as possible to this pin and be connected directly to the ground plane. Capacitor is optional with some loss of sensitivity. IF prescaler input. Small signal input from the VCO. Ground for IF digital, MICROWIRE, FoLD, and oscillator circuits. IF charge pump output. For connection to a loop filter for driving the input of an external VCO. Power Supply for IF charge pump. Must be VCC. Power supply voltage input for IF analog, IF digital, MICROWIRE, FoLD, and oscillator circuits. Input may range from 2.7V to 5.5V. VCC2 must equal VCC1. Bypass capacitors should be placed as close as possible to this pin and be connected directly to the ground plane. No connect.
1 2 3 4 5
2 3 4 5 6
2 3 4 5 6
VP1 Do RF GND fIN RF fIN RF
-- O -- I I
6 7 8 9
7 8 10 11
7 8 9 10
GND OSCin GND FoLD
-- I -- O
10
12
11
Clock
I
11 12
14 15
12 13
Data LE
I I
13 14
16 17
14 15
GND fIN IF
-- I
15 16 17 18 19
18 19 20 22 23
16 17 18 19 20
fIN RF GND Do IF V P2 VCC2
I -- O -- --
X
1, 9, 13, 21
X
NC
--
3
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