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LMX2330ATM Datasheet(PDF) 2 Page - National Semiconductor (TI) |
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LMX2330ATM Datasheet(HTML) 2 Page - National Semiconductor (TI) |
2 / 17 page Connection Diagram Pin Description Pin No. Pin Name I/O Description 1V CC1 — Power supply voltage input for RF analog and RF digital circuits. Input may range from 2.7V to 5.5V. V CC1 must equal VCC2. Bypass capacitors should be placed as close as possible to this pin and be connected directly to the ground plane. 2V P1 — Power Supply for RF charge pump. Must be ≥ V CC. 3D o RF O Internal charge pump output. For connection to a loop filter for driving the input of an external VCO. 4 GND — Ground for RF digital circuitry. 5f IN RF I RF prescaler input. Small signal input from the VCO. 6f IN RF 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. Capacitor is optional with some loss of sensitivity. 7 GND — Ground for RF analog circuitry. 8 OSC in I Oscillator input. The input has a V CC/2 input threshold and can be driven from an external CMOS or TTL logic gate. 9 GND — Ground for IF digital, MICROWIRE™,F oLD, and oscillator circuits. 10 F oLD O Multiplexed output of the RF/IF programmable or reference dividers, RF/IF lock detect signals and Fastlock mode. CMOS output (see Programmable Modes). 11 Clock I High impedance CMOS Clock input. Data for the various counters is clocked in on the rising edge, into the 22-bit shift register. 12 Data I Binary serial data input. Data entered MSB first. The last two bits are the control bits. High impedance CMOS input. 13 LE I 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(. 14 GND — Ground for IF analog circuitry. 15 f IN IF I IF prescaler complementry 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. 16 f IN IF I IF prescaler input. Small signal input from the VCO. 17 GND — Ground for IF digital, MICROWIRE, F oLD, and oscillator circuits. 18 D o IF O IF charge pump output. For connection to a loop filter for driving the input of an external VCO. 19 V P2 — Power Supply for IF charge pump. Must be ≥ V CC. Thin Shrink Small Outline Package (TM) DS012331-2 Order Number LMX2330ATM, LMX2331ATM or LMX2332ATM NS Package Number MTC20 www.national.com 2 |
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