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
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
OUT
IN
1
2
3
4
5
6
7
8
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
Precise and stable pulse width
Low jitter over entire programmable range
Input & outputs fully TTL interfaced & buffered
10 T2L fan-out capability
9
10
11
12
13
14
FUNCTIONAL DESCRIPTION
PIN DESCRIPTIONS
The PPG323F-series device is a 23-bit digitally programmable pulse
generator. The width, PWA, depends on the address code (A22-A0)
according to the following formula:
TRIG
OUT
Trigger Input
Pulse Output
A0-A22 Address Bits
VCC
GND
+5 Volts
Ground
PWA = PW0 + TINC * A
where A is the address code, TINC is the incremental pulse width of the
device, and PW0 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
Part
Number
Incremental
Width
Per Step (ns)
20
Total Width
Change (sec)
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
PPG323F-20
PPG323F-50
0.16777
0.41943
0.83886
1.6777
4.1943
8.3886
16.777
41.943
50
100
200
500
1000
2000
5000
PPG323F-100
PPG323F-200
PPG323F-500
PPG323F-1000
PPG323F-2000
PPG323F-5000
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