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LM2326 Scheda tecnica(PDF) 2 Page - National Semiconductor (TI) |
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LM2326 Scheda tecnica(HTML) 2 Page - National Semiconductor (TI) |
2 / 19 page Connection Diagrams Pin Descriptions 16-Pin TSSOP 16-Pin CSP Pin Name I/O Description 115 FL o O FastLock Output. For connection of parallel resistor to the loop filter. (See Section 1.3.4 FASTLOCK MODES description.) 216 CP o O Charge Pump Output. For connection to a loop filter for driving the input of an external VCO. 3 1 GND Charge Pump Ground. 4 2 GND Analog Ground. 53 f IN I 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. The complementary input can be left unbypassed, with some degradation in RF sensitivity. 64 f IN I RF Prescaler Input. Small signal input from the VCO. 75 V CC1 Analog Power Supply Voltage Input. Input may range from 2.3V to 5.5V. Bypass capacitors should be placed as close as possible to this pin and be connected directly to the ground plane. V CC1 must equal V CC2. 8 6 OSC IN I Oscillator Input. This input is a CMOS input with a threshold of approximately V CC/2 and an equivalent 100k input resistance. The oscillator input is driven from a reference oscillator. 9 7 GND Digital Ground. 10 8 CE I Chip Enable. A LOW on CE powers down the device and will TRI-STATE the charge pump output. Taking CE HIGH will power up the device depending on the status of the power down bit F2. (See Section 1.3.1 POWERDOWN OPERATION and Section 1.7.1 DEVICE PROGRAMMING AFTER FIRST APPLYING V CC.) 11 9 Clock I High Impedance CMOS Clock Input. Data for the various counters is clocked in on the rising edge into the 21-bit shift register. 12 10 Data I Binary Serial Data Input. Data entered MSB first. The last two bits are the control bits. High impedance CMOS input. 13 11 LE I Load Enable CMOS Input. When LE goes HIGH, data stored in the shift registers is loaded into one of the 3 appropriate latches (control bit dependent). 14 12 Fo/LD O Multiplexed Output of the RF Programmable or Reference Dividers and Lock Detect. CMOS output. (See Table 4.) 15 13 V CC2 Digital Power Supply Voltage Input. Input may range from 2.3V to 5.5V. Bypass capacitors should be placed as close as possible to this pin and be connected directly to the ground plane. V CC1 must equal V CC2. 16 14 V P Power Supply for Charge Pump. Must be ≥ V CC. LMX2306/16/26 DS100127-2 16-Lead (0.173” Wide) Thin Shrink Small Outline Package(TM) Order Number LMX2306TM, LMX2306TMX, LMX2316TM, LMX2316TMX, LMX2326TM or LMX2326TMX See NS Package Number MTC16 LMX2306/16/26 DS100127-19 16-pin Chip Scale Package Order Number LMX2306SLBX, LMX2316SLBX or LM2326SLBX See NS Package Number SLB16A www.national.com 2 |
Codice articolo simile - LM2326 |
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Descrizione simile - LM2326 |
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