PPG323F Datasheet, PDF (1/5 Pages) Data Delay Devices, Inc. – 23-BIT CRYSTAL-STABILIZED PULSE GENERATOR (SERIES PPG323F)

23-BIT CRYSTAL-STABILIZED
PULSE GENERATOR
(SERIES PPG323F)
FEATURES
 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
 10 T²L fan-out capability
A11
1
A10
2
A9
3
A8
4
A7
5
A6
6
A5
7
A4
8
A3
9
A2
10
A1
11
A0
12
OUT
13
IN
14
PINOUT
PPG323F
28
GND
27
A12
26
A13
25
A14
24
A15
23
A16
22
A17
21
A18
20
A19
19
A20
18
A21
17
A22
16
RES
15
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:
PW_A = PW₀ + T_INC * A
TRIG
OUT
A0-A22
VCC
GND
Trigger Input
Pulse Output
Address Bits
+5 Volts
Ground
where A is the address code, T_INC 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.
SERIES SPECIFICATIONS
 Pulse width tolerance: 0.05% or 100ps,
whichever is greater
 Inherent width (PW₀): 100ns typical
 Inherent delay (T_TO): 10ns typical
 Operating temperature: -40 to 85 C
 Supply voltage V_CC: 5VDC  5%
 Supply current: I_CC = 200ma typical
DASH NUMBER SPECIFICATIONS
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.
Doc #14016
6/9/2014
DATA DELAY DEVICES, INC.
3 Mt. Prospect Ave. Clifton, NJ 07013
2014 Data Delay Devices
1