T0820-TCQ
| Model | T0820-TCQ |
| Description | 4 CHANNEL LASER DRIVER WITH RF OSCILLATOR |
| PDF file | Total 11 pages (File size: 188K) |
| Chip Manufacturer | ATMEL |
Electrical Characteristics: Laser Current Amplifier Output AC Performance
V
CC
= +5 V, IOUT = 40 mA DC with 40 mA pulse, T
amb
= 25°C, unless otherwise specified
No.
5
5.1
5.2
5.3
5.4
Parameters
Write rise time
Write fall time
Output current
overshoot
I
OUT
ON prop delay
Test Conditions
I
OUT
= 40 mA (read) +
40 mA (10% - 90%)
(1)
I
OUT
= 40 mA (read) +
40 mA (10% - 90%)
(1)
I
OUT
= 40 mA (read) +
40 mA
(1)
NE 50% High-Low to
I
OUT
at 50% of final
value
NE 50% Low-High to
I
OUT
at 50% of final
value
ENABLE 50% High-
Low to I
OUT
at 50% of
final value
ENABLE 50% Low-
High to I
OUT
at 50% of
final value
I
OUT
= 50 mA, all
channels, -3 dB value
RF = 7.5 kΩ
RS = 560
Ω
RF = 7.5 kΩ
RS = 560
Ω
ENOSC 50% Low-
High to I
OUT
at 50% of
final value
ENOSC 50% High-
Low to I
OUT
at 50% of
final value
RF = 7.5 kΩ
RS = 560
Ω
Pin
Symbol
Min.
Typ.
Max.
Unit
Type*
Laser Current Amplifier Output AC Performance
14
14
14
t
RISE
t
FALL
OS
1.0
1.1
5
3.0
3.0
ns
ns
%
C
C
C
14
t
ON
2.0
ns
C
5.5
I
OUT
OFF prop delay
14
t
OFF
2.0
ns
C
5.6
Disable time
14
t
DIS
10
ns
C
5.7
Enable time
14
t
EN
BW
LCA
50
ns
C
5.10
6
6.1
Amplifier bandwidth
Oscillator
Oscillator frequency
Oscillator
temperature
coefficient
Disable time oscillator
14
20
MHz
C
14
F
OSC
TC
OSC
255
300
350
MHz
ppm/
°
C
ns
A
6.2
6.3
14
-150
C
14
T
DISO
4
C
6.4
Enable time oscillator
14
T
ENO
S
OSC
35
2
ns
C
6.5
Oscillator swing
14
55
mApp
A
*) Type means: A =100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
Note:
1. Load resistor at IOUT 10
Ω
measurement with a 50-Ω oscilloscope and a 39-Ω series resistor
,
6
T0820
4506F–DVD–09/04
