PPG323F 23-BIT CRYSTAL-STABILIZED PULSE GENERATOR (SERIES PPG323F) FEATURES PINOUT Digitally programmable in 8,388,608 steps Monotonic pulse-width-vs-address variation Rising edge triggered Precise and stable pulse width Low jitter over entire programmable range Input & outputs fully TTL interfaced & buffered 2 10 T L fan-out capability A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 OUT IN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 GND A12 A13 A14 A15 A16 A17 A18 A19 A20 A21 A22 RES VCC FUNCTIONAL DESCRIPTION PIN DESCRIPTIONS The PPG323F-series device is a 23-bit digitally programmable pulse generator. The width, PW A, depends on the address code (A22-A0) according to the following formula: TRIG OUT A0-A22 VCC GND PW A = PW 0 + TINC * A Trigger Input Pulse Output Address Bits +5 Volts Ground where A is the address code, TINC is the incremental pulse width of the device, and PW 0 is the inherent pulse width of the device. The incremental width is specified by the dash number of the device and can range from 20ns through 5us, inclusively. RES is held LOW during normal operation. When it is brought HIGH, OUT is forced into a LOW state, and the unit is ready for the next trigger input. The address is not latched and must remain asserted while the output pulse is active. The PPG323F is crystal-stabilized, providing low jitter (350ps RMS) over the entire address range. DASH NUMBER SPECIFICATIONS SERIES SPECIFICATIONS Pulse width tolerance: 0.05% or 100ps, whichever is greater Inherent width (PW0): 100ns typical Inherent delay (TTO): 10ns typical Operating temperature: -40 to 85 C Supply voltage VCC: 5VDC 5% Supply current: ICC = 200ma typical Part Number PPG323F-20 PPG323F-50 PPG323F-100 PPG323F-200 PPG323F-500 PPG323F-1000 PPG323F-2000 PPG323F-5000 Incremental Width Per Step (ns) 20 50 100 200 500 1000 2000 5000 Total Width Change (sec) 0.16777 0.41943 0.83886 1.6777 4.1943 8.3886 16.777 41.943 NOTE: Any dash number between 20 and 5000 not shown is also available. 2014 Data Delay Devices Doc #14016 6/9/2014 DATA DELAY DEVICES, INC. 3 Mt. Prospect Ave. Clifton, NJ 07013 1 PPG323F APPLICATION NOTES DEVICE TIMING POWER SUPPLY BYPASSING The timing definitions and restrictions for the PPG323F are shown in Figure 1. The unit is activated by a rising edge on the TRIG input. After a time, TTO (called the inherent delay), the rising edge of the pulse appears at OUT. The duration of the pulse is given by the above equation. For the duration of the pulse, the device ignores subsequent triggers. Once the falling edge of the pulse has appeared at OUT, an additional time, TOTR, is required before the device can respond to the next trigger. The PPG323F relies on a stable power supply to produce repeatable pulses within the stated tolerances. A 0.1uf capacitor from VCC to GND, located as close as possible to the VCC pin, is recommended. A wide VCC trace should connect the VCC pin externally, and a clean ground plane should be used. At power-up, the state of the PPG323F is unknown. Consequently, after power is applied, the unit may not respond to input triggers for a time equal to the maximum pulse width, PW T. After this time, the unit will function properly. If your application requires that the device function immediately, issue a quick reset at power-up. `A22:0 Ai Ai+1 TOAX TATS TRW RES TRTS TTW TRIG TTO TTO TRO TOTR OUT PW A Figure 1: Timing Diagram Doc #14016 6/9/2014 DATA DELAY DEVICES, INC. Tel: 973-773-2299 Fax: 973-773-9672 http://www.datadelay.com 2 PPG323F DEVICE SPECIFICATIONS TABLE 1: AC CHARACTERISTICS PARAMETER Total Programmable Pulse Width Inherent Pulse Width Trigger to Output Delay Reset to Output Delay Output Skew Trigger Pulse Width Reset Pulse Width Reset to Trigger Setup Time Address to Trigger Setup Time Output Low to Address Change Output to Trigger Recovery Time SYMBOL PW T PW 0 TTO TRO TSKEW TTW TRW TRTS TATS TOAX TOTR MIN TYP 8,388,608 100.0 10.0 MAX 17.0 1.5 5.0 10.0 9.0 6.0 0.0 10.0 UNITS TINC ns ns ns ns ns ns ns ns ns ns TABLE 2: ABSOLUTE MAXIMUM RATINGS PARAMETER DC Supply Voltage Input Pin Voltage Storage Temperature Lead Temperature SYMBOL VCC VIN TSTRG TLEAD MIN -0.3 -0.3 -55 MAX 7.0 VDD+0.3 150 300 UNITS V V C C NOTES 10 sec TABLE 3: DC ELECTRICAL CHARACTERISTICS (0C to 70C, 4.75V to 5.25V) PARAMETER High Level Output Voltage SYMBOL VOH Low Level Output Voltage VOL High Level Output Current Low Level Output Current High Level Input Voltage Low Level Input Voltage Input Clamp Voltage Input Current at Maximum Input Voltage High Level Input Current Low Level Input Current Short-circuit Output Current Output High Fan-out Output Low Fan-out IOH IOL VIH VIL VIK IIHH Doc #14016 6/9/2014 IIH IIL IOS MIN 2.5 TYP 3.4 MAX UNITS V 0.35 0.5 V -1.0 20.0 0.8 -1.2 0.1 mA mA V V V mA 20 -0.6 -150 25 12.5 A mA mA Unit Load 2.0 -60 DATA DELAY DEVICES, INC. 3 Mt. Prospect Ave. Clifton, NJ 07013 NOTES VCC = MIN, IOH = MAX VIH = MIN, VIL = MAX VCC = MIN, IOL = MAX VIH = MIN, VIL = MAX VCC = MIN, II = IIK VCC = MAX, VI = 7.0V VCC = MAX, VI = 2.7V VCC = MAX, VI = 0.5V VCC = MAX 3 PPG323F PACKAGE DIMENSIONS 2.000 0.500 0.370 0.240 0.130 28 15 0.100 (26 places) 0.027 x 0.027 (28 places) 1.800 2.000 1 Doc #14016 6/9/2014 14 DATA DELAY DEVICES, INC. Tel: 973-773-2299 Fax: 973-773-9672 http://www.datadelay.com 4 PPG323F DELAY LINE AUTOMATED TESTING TEST CONDITIONS INPUT: o o Ambient Temperature: 25 C 3 C Supply Voltage (Vcc): 5.0V 0.1V Input Pulse: High = 3.0V 0.1V Low = 0.0V 0.1V Source Impedance: 50 Max. Rise/Fall Time: 3.0 ns Max. (measured between 0.6V and 2.4V ) Pulse Width: PW IN = 10ns Period: PERIN = 2 x Max. Pulse Width OUTPUT: Load: Cload: Threshold: 1 FAST-TTL Gate 5pf 10% 1.5V (Rising & Falling) NOTE: The above conditions are for test only and do not in any way restrict the operation of the device. PRINTER COMPUTER SYSTEM REF PULSE GENERATOR OUT TRIG TRIG DEVICE UNDER TEST (DUT) OUT IN TRIG TIME INTERVAL COUNTER Test Setup PERIN PW IN TRISE INPUT SIGNAL TFALL VIH 2.4V 1.5V 0.6V 2.4V 1.5V 0.6V TTO OUTPUT SIGNAL VIL PW A VOH 1.5V 1.5V VOL Timing Diagram For Testing Doc #14016 6/9/2014 DATA DELAY DEVICES, INC. 3 Mt. Prospect Ave. Clifton, NJ 07013 5