NBC12430AFA

NBC12430, NBC12430A 3.3V/5V Programmable PLL Synthesized Clock Generator 50 MHz to 800 MHz http://onsemi.com The NBC12430 and NBC12430A are general purpose, PLL based synthesized clock sources. The VCO will operate over a frequency range of 400 MHz to 800 MHz. The VCO frequency is sent to the N−output divider, where it can be configured to provide division ratios of 1, 2, 4, or 8. The VCO and output frequency can be programmed using the parallel or serial interfaces to the configuration logic. Output frequency steps of 250 KHz, 500 KHz, 1.0 MHz, 2.0 MHz can be achieved using a 16 MHz crystal, depending on the output dividers settings. The PLL loop filter is fully integrated and does not require any external components. MARKING DIAGRAMS 1 28 NBC12430x PLCC−28 FN SUFFIX CASE 776 AWLYYWW • • • • • • • • • • • • −40°C to 85°C Ambient Operating Temperature (NBC12430A) • Pb−Free Packages are Available* Best−in−Class Output Jitter Performance, ±20 ps Peak−to−Peak 50 MHz to 800 MHz Programmable Differential PECL Outputs Fully Integrated Phase−Lock−Loop with Internal Loop Filter Parallel Interface for Programming Counter and Output Dividers During Powerup Minimal Frequency Overshoot Serial 3−Wire Programming Interface Crystal Oscillator Interface Operating Range: VCC = 3.135 V to 5.25 V CMOS and TTL Compatible Control Inputs Pin and Function Compatible with Motorola MC12430 and MPC9230 0°C to 70°C Ambient Operating Temperature (NBC12430) NBC12430x LQFP−32 FA SUFFIX CASE 873A AWLYYWW 32 1 x A WL YY WW = Blank or A = Assembly Location = Wafer Lot = Year = Work Week ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 15 of this data sheet. *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. © Semiconductor Components Industries, LLC, 2004 1 December, 2004 − Rev. 5 Publication Order Number: NBC12430/D NBC12430, NBC12430A +3.3 or 5.0 V 1 MHz FREF with 16 MHz Crystal 1 PLL_VCC PHASE DETECTOR VCO 9−BIT B M COUNTER BN (1, 2, 4, 8) 21, 25 24 23 FOUT FOUT B 16 XTAL_SEL FREF_EXT 3 2 4 10−20MHz 5 OE S_LOAD P_LOAD 6 28 7 +3.3 or 5.0 V VCC XTAL1 OSC XTAL2 B2 400−800 MHz 20 LATCH LATCH TEST LATCH 0 1 0 1 S_DATA S_CLOCK 27 9−BIT SR 26 2−BIT SR 3−BIT SR 8 ¡ 16 9 M[8:0] 17, 18 2 N[1:0] 22, 19 Figure 1. Block Diagram (PLCC−28) Table 1. Output Division N [1:0] 00 01 10 11 FOUT FOUT GND VCC Output Division 2 4 8 1 TEST GND VCC Table 2. XTAL_SEL And OE Input XTAL_SEL OE 0 FREF_EXT Outputs Disabled 1 XTAL Outputs Enabled TEST 26 FOUT FOUT GND 25 24 23 22 21 20 19 18 S_CLOCK S_DATA S_LOAD PLL_VCC FREF_EXT XTAL_SEL XTAL1 26 N[1] 32 31 30 29 28 27 25 24 23 22 21 20 19 18 17 9 10 11 12 13 14 15 16 GND VCC VCC VCC 27 17 28 16 N[0] S_CLOCK S_DATA M[8] S_LOAD M[7] M[6] PLL_VCC PLL_VCC FREF_EXT 1 2 3 4 5 6 7 8 N/C N[1] N[0] M[8] M[7] M[6] M[5] M[4] 1 15 2 14 3 13 M[5] XTAL_SEL M[4] XTAL1 4 5 6 7 8 9 10 11 12 M[0] M[1] M[2] XTAL2 P_LOAD M[3] M[0] M[1] M[2] XTAL2 M[3] Figure 2. 28−Lead PLCC (Top View) Figure 3. 32−Lead LQFP (Top View) http://onsemi.com 2 P_LOAD N/C OE OE NBC12430, NBC12430A The following gives a brief description of the functionality of the NBC12430 and NBC12430A Inputs and Outputs. Unless explicitly stated, all inputs are CMOS/TTL compatible with either pullup or pulldown resistors. The PECL outputs are capable of driving two series terminated 50 W transmission lines on the incident edge. ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Pin Name Function Description INPUTS XTAL1, XTAL2 S_LOAD* Crystal Inputs CMOS/TTL Serial Latch Input (Internal Pulldown Resistor) CMOS/TTL Serial Data Input (Internal Pulldown Resistor) CMOS/TTL Serial Clock Input (Internal Pulldown Resistor) CMOS/TTL Parallel Latch Input (Internal Pullup Resistor) These pins form an oscillator when connected to an external series−resonant crystal. This pin loads the configuration latches with the contents of the shift registers. The latches will be transparent when this signal is HIGH; thus, the data must be stable on the HIGH−to−LOW transition of S_LOAD for proper operation. This pin acts as the data input to the serial configuration shift registers. This pin serves to clock the serial configuration shift registers. Data from S_DATA is sampled on the rising edge. This pin loads the configuration latches with the contents of the parallel inputs .The latches will be transparent when this signal is LOW; therefore, the parallel data must be stable on the LOW−to−HIGH transition of P_LOAD for proper operation. These pins are used to configure the PLL loop divider. They are sampled on the LOW−to−HIGH transition of P_LOAD. M[8] is the MSB, M[0] is the LSB. These pins are used to configure the output divider modulus. They are sampled on the LOW−to−HIGH transition of P_LOAD. Active HIGH Output Enable. The Enable is synchronous to eliminate possibility of runt pulse generation on the FOUT output. This pin can be used as the PLL Reference This pin selects between the crystal and the FREF_EXT source for the PLL reference signal. A HIGH selects the crystal input. S_DATA* S_CLOCK* P_LOAD** M[8:0]** N[1:0]** OE** FREF_EXT* XTAL_SEL** OUTPUTS FOUT, FOUT TEST POWER VCC PLL_VCC GND Positive Supply for the Logic Positive Supply for the PLL Negative Power Supply The positive supply for the internal logic and output buffer of the chip, and is connected to +3.3 V or +5.0 V. This is the positive supply for the PLL and is connected to +3.3 V or +5.0 V. These pins are the negative supply for the chip and are normally all connected to ground. PECL Differential Outputs PECL Output These differential, positive−referenced ECL signals (PECL) are the outputs of the synthesizer. The function of this output is determined by the serial configuration bits T[2:0]. CMOS/TTL PLL Loop Divider Inputs (Internal Pullup Resistor) CMOS/TTL Output Divider Inputs (Internal Pullup Resistor) CMOS/TTL Output Enable Input (Internal Pullup Resistor) CMOS/TTL Input (Internal Pulldown Resistor) CMOS/TTL Input (Internal Pullup Resistor) * When left Open, these inputs will default LOW. ** When left Open, these inputs will default HIGH. PIN FUNCTION DESCRIPTION http://onsemi.com 3 NBC12430, NBC12430A ATTRIBUTES Characteristics Internal Input Pulldown Resistor Internal Input Pullup Resistor ESD Protection Human Body Model Machine Model Charged Device Model PLCC LQFP Flammability Rating Transistor Count Meets or exceeds JEDEC Spec EIA/JESD78 IC Latchup Test 1. For additional information, see Application Note AND8003/D. Oxygen Index: 28 to 34 Value 75 kW 37.5 kW > 2 kV > 150 V > 1 kV Level 1 Level 2 UL 94 V−0 @ 0.125 in 2011 Moisture Sensitivity (Note 1) MAXIMUM RATINGS Symbol VCC VI Iout TA Positive Supply Input Voltage Output Current Operating Temperature Range NBC12430 NBC12430A Tstg qJA qJC qJA qJC Tsol Storage Temperature Range Thermal Resistance (Junction−to−Ambient) Thermal Resistance (Junction−to−Case) Thermal Resistance (Junction−to−Ambient) Thermal Resistance (Junction−to−Case) Wave Solder Pb Pb−Free 0 lfpm 500 lfpm Standard Board 0 lfpm 500 lfpm Standard Board