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SM5160CM/DM NIPPON PRECISION CIRCUITS INC. Programable PLL Frequency Synthesizer OVERVIEW The SM5160CM/DM is a PLL frequency synthesizer IC with programmable input and reference frequency dividers. The SM5160CM/DM features an unlock detector, outputs for use with active passive lowpass filters and direct frequency divider outputs. The SM5160CM/DM operates from 0.95 to 2.00 V and 2.0 to 3.3 V supplies and is available in 16-pin SSOPs. PINOUT (Top View) XIN XOUT VDD3 DOA DOP VSS FIN VDD1 1 16 TEST FR FV LE DATA CLK LD 16 0 8 9 VDD2 FEATURES * Up to 95 MHz input frequency (FIN, VDD= 0.98V) * Up to 90 MHz input frequency (FIN, VDD= 0.95V) * Up to 13.0 MHz reference frequency (XIN) * 1056 to 65535 programmable input frequency divider ratio * 20 to 65532 programmable reference frequency divider ratio (SM5160CM) * 20 to 8188 programmable reference frequency divider ratio (SM5160DM) * Unlock detector * Outputs for use with active and passive lowpass filters * Direct outputs from frequency dividers * 0.95 to 2.0 V and 2.0 to 3.3 V supplies * Molybdenum- gate CMOS process * 16-pin SSOP PACKAGE DIMENSIONS (Unit: mm) 4.4 0.2 6.2 0.3 0.6TYP 6.8 0.3 0.15 - 0.05 + 0.10 0.05 0.05 1.5 0.1 0.36 0.1 0.8 0 10 0.4 0.2 SERIES LINEUP XIN SM5160CM SM5160DM Divider range Counter bits Divider range Counter bits 20 to 65532 (4 step) 14 bit 20 to 8188 (4 step) 11 bit FIN 1056 to 65535 16 bit 1056 to 65535 16 bit NIPPON PRECISION CIRCUITS-1 SM5160CM/DM BLOCK DIAGRAM VDD1 VDD2 1/4 PRESCALER XIN XOUT TEST DATA CLK 11 or 14 BIT R COUNTER FR LEVEL SHIFTER LD LOCK DETECTOR 14 BIT LATCH 17 BIT SHIFT REGISTER PHASE DETECTOR VDD3 LE FIN VDD1 16 BIT LATCH CHARGE PUMP DOA DOP 16 BIT N COUNTER LEVEL SHIFTER VDD2 FV PIN DESCRIPTION Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Name XIN XOUT VDD3 DOA DOP VSS FIN VDD1 VDD2 LD CLK DATA LE FV FR TEST Description Reference oscillator or external clock input. Internal feedback resistor for AC coupling Reference oscillator or external clock output. Oscillator is OFF when VDD1 is LOW. Supply voltage for sections not supplied by VDD1 and VDD2 Output to active lowpass filter. Single-ended, tristate output. Floating when VDD1 is LOW Output to passive lowpass filter. Single-ended, tristate output Floating when VDD1 is LOW Ground Comparison frequency input. Internal feedback resistor for AC coupling Supply voltage for XIN and FIN amplifiers Supply voltage for N counter and R counter Unlock detector output. LOW when PLL is unlocked. Shift register clock input Serial data input Latch enable input Input frequency divider buffered output. This is level-shifted and input to the phase detector. Reference frequency divider buffered output. This is level-shifted and input to the phase detector. Test input. Internal pull-down resistor NIPPON PRECISION CIRCUITS-2 SM5160CM/DM SPECIFICATIONS Absolute Maximum Ratings Parameter Supply voltage range 1 Supply voltage range 2 Input voltage range Operating temperature range Storage temperature range Soldering temperature range Soldering time range Symbol VDD1-VSS VDD2-VSS VDD3-VSS VIN TOPR TSTG TSLD -0.3 to +7.0 VSS-0.3 to VDD+0.3 -10 to +60 -40 to +125 250 10 V V C C C sec Condition Rating -0.3 to +7.0 Unit V tSLD Electrical Characteristics (VDD1= VDD2= 0.95 to 2.0V, VDD3= 2.0 to 3.3V, VSS= 0V, Ta= -10 to +60 C unless otherwise noted) Rating Parameter Supply voltage 1 Supply voltage 2 Symbol VDD1,VDD2 VDD3 Condition VDD1 and VDD2 pins VDD3 pin FIN= 90MHz, 0.5VP-P sine wave XIN= 12.8MHz, 0.5VP-P sine wave Current consumption (*1) IDD1 VDD1= VDD2= 0.95 to 1.05V FIN= 95MHz, 0.5VP-P sine wave XIN= 12.8MHz, 0.5VP-P sine wave VDD1= VDD2= 0.98 to 1.08V Standby-mode current consumption FIN maximum operating frequency IDD2 fMAX1 VDD1= VDD2= 0V FIN: 0.5VP-P sine wave VDD1= VDD2= 0.95 to 2.0V FIN: 0.5VP-P sine wave VDD1= VDD2= 0.98 to 2.0V XIN maximum operating frequency FIN minimum operating frequency XIN minimum operating frequency FIN and XIN input voltage CLK, DATA and LE input voltage XIN input current FIN input current DOA and DOP output current LD, FV and FR output current DATA to CLK and CLK to LE setup time hold time *1 fMAX2 fMIN1 fMIN2 VIN VIH VIL IIH1 IIL1 IIH2 IIL2 IOH1 IOL1 IOH1 IOL1 VIH= VDD1 VIL= 0V VIH= VDD1 VIL= 0V VDD3= 2.7 to 3.3V, VOH= VDD3- 0.4V VDD3= 2.7 to 3.3V, VOL= 0.4V VOH= VDD2- 0.4V VOH= 0.4V 1.0 1.0 0.1 0.1 2 2 2 XIN: 0.5VP-P sine wave FIN: 0.5VP-P sine wave XIN: 0.5VP-P sine wave FIN and XIN pins 0.5 VDD3- 0.3 0.3 10 10 60 60 13 40 7 VDD1 MHz MHz MHz VP-P V V A A A A mA mA mA mA s s s 95 MHz 90 10 A MHz 0.85 1.40 mA 0.80 1.20 mA min 0.95 2.0 typ 1.00 3.0 max 2.0 3.3 Unit V V tSU1 tSU2 tH Current consumption is the current consumed from VDD1 and VDD2. NIPPON PRECISION CIRCUITS-3 SM5160CM/DM Serial data input timing DATA 50% 50% tSU1 CLK 50% tH LE tSU2 50% Phase detector timing FR FV DOP DOA LD NIPPON PRECISION CIRCUITS-4 SM5160CM/DM FUNCTIONAL DESCRIPTION Lowpass Filter Connection An external lowpass filter connects to DOP or DOA. The output form the filter is fed to a voltage-controlled oscillator (VCO) which generates the PLL output. DOP is intended for use with a passive filter as shown in figure 1. DOA is intended for use with an active filter as shown in figure 2. Programmable Frequency Divider The input frequency divider and reference frequency divider ratios can be programmed using the serial data input. Input data consists of 16 data bits, in the order msb to lsb, followed by a control bit, as shown in figure 3 and 4. SM5160CM If the control bit is set to 0, the data is written to the 16-bit latch and then passed to the input frequency divider. If the control bit is set to 1, the 2 lsbs are ignored and the remaining data is written to the 14-bit latch and then passed to the reference frequency divider. R1 DOP R2 C VCO 16BIT (N- COUNTER DATA) CONTROL Figure 1. Passive lowpass filter circuit ignored 14BIT (R- COUNTER DATA) 0: N-LATCH VDD VDD 1: R-LATCH R2 R1 DOA C RL VCO Figure 3. Serial data format (SM5160CM) SM5160DM If the control bit is set to 0, the data is written to the 16-bit latch and then passed to the input frequency divider. If the control bit is set to 1, the 2 lsbs and 3msbs are ignored and the remaining data is written to the 11-bit latch and then passed to the reference frequency divider. 510k Figure 2. Active lowpass filter circuit CONTROL LSB 16BIT (N- COUNTER DATA) ignored 11BIT (R- COUNTER DATA) 0: N-LATCH ignored 1: R-LATCH Figure 4. Serial data format (SM5160DM) NIPPON PRECISION CIRCUITS-5 MSB MSB LSB SM5160CM/DM Serial data input timing Serial data input timing is shown in figure 5. Data is read on the rising edge of CLK. The state on DATA should be changed in sync with the falling edge of CLK. LE should be LOW while data is being written to the shift register. When LE goes HIGH, data is transferred from the shift register to one of the frequency divider latches. Stand-by mode The stand-by mode is entered by setting VDD1, VDD2 to 0V while the device is operation. In the stand-by mode, the amplifiers of XIN, FIN and N/R counter are stopped. As long as voltage is provide to VDD3, data written in latch is kept. Exit from this mode to normal operation, therefore, is made by providing voltage to VDD1, VDD2. In this mode, input to FIN must be done AC coupling, input to XIN must be done AC coupling or by crystal oscillator. In this mode, DOA, DOP should be in state of floating. CLK 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 LSB CONTROL 17 DATA LE MSB Figure 5. Serial data input NIPPON PRECISION CIRCUITS-6 SM5160CM/DM TYPICAL APPLICATION (For Ex. : in case of Pager) RF AMP 1'st MIX 1'st IF 2'nd MIX 2'nd IF WAVE SHAPER LPF Frequency Multiplier 3 1'st LO 2'nd LO B+ DISC SM5160 XIN XOUT VDD3 DOA DOP VSS FIN VDD1 TEST FR FV LE DATA CLK LD VDD2 RAM ROM CPU DECODER LCD DRIVER Display DRIVER DC/ DC CONVERTER B++ B+ NIPPON PRECISION CIRCUITS INC. reserves the right to make changes to the products described in this data sheet in order to improve the design or performance and to supply the best possible products. Nippon Precision Circuits Inc. assumes no responsibility for the use of any circuits shown in this data sheet, conveys no license under any patent or other rights, and makes no claim that the circuits are free from patent infringement. Applications for any devices shown in this data sheet are for illustration only and Nippon Precision Circuits Inc. makes no claim or warranty that such applications will be suitable for the use specified without further testing or modification. The products described in this data sheet are not intended to use for the apparatus which influence human lives due to the failure or malfunction of the products. Customers are requested to comply with applicable laws and regulations in effect now and hereinafter, including compliance with export controls on the distribution or dissemination of the products. Customers shall not export, directly or indirectly, any products without first obtaining required licenses and approvals from appropriate government agencies. NIPPON PRECISION CIRCUITS INC. 4-3, 2-chome Fukuzumi, Koto-ku Tokyo, 135 -8430, JAPAN Telephon: 03-3642-6661 Facsimile: 03-3642-6698 NC9506AE 1995 8 NIPPON PRECISION CIRCUITS INC. NIPPON PRECISION CIRCUITS-7 |
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