TDA4851 Datasheet, PDF (6/17 Pages) NXP Semiconductors – Horizontal and vertical deflection controller for VGA/XGA and autosync monitors

Philips Semiconductors
Horizontal and vertical deflection controller
for VGA/XGA and autosync monitors
Preliminary specification
TDA4851
Table 1 VGA modes
MODE
1
2
3
4
autosync
H / V SYNC
POLARITY
+/−
−/+
−/−
+/+
*/*
FREQUENCY H
(kHz)
31.45
31.45
31.45
fixed by external circuitry
fixed by external circuitry
FREQUENCY V NUMBER OF MODE OUTPUT
(Hz)
ACTIVE LINES
PIN 7
70
350
LOW
70
400
LOW
60
480
LOW
−
−
HIGH
−
−
forced to GND
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134)
SYMBOL
V_P
V_3,7
V₈
V_n
I₂
I₃
I₇
I₈
T_stg
T_amb
Tj
V_ESD
PARAMETER
supply voltage (pin 1)
voltage on pins 3 and 7
voltage on pin 8
voltage on pins 5, 6, 9, 10, 13, 14 and 18
current on pin 2
current on pin 3
current on pin 7
current on pin 8
storage temperature range
operating ambient temperature range
maximum junction temperature
electrostatic handling for all pins (note 1)
Note to the Limiting Values
1. Equivalent to discharging a 200 pF capacitor through a 0 Ω series resistor.
THERMAL RESISTANCE
SYMBOL
R_{th j-a}
PARAMETER
from junction to ambient in free air
MIN.
−0.5
−0.5
−0.5
−0.5
−
−
−
−
−55
0
0
−
MAX.
16
16
7
6.5
±10
100
20
−10
+150
70
+150
±400
UNIT
V
V
V
V
mA
mA
mA
mA
°C
°C
°C
V
THERMAL RESISTANCE
65 K/W
November 1992
6