mlx90804 ETC-unknow, mlx90804 Datasheet - Page 4

• Manufacturer Part Number: mlx90804
• Description: Speed Regulator For Universal Motors
• Manufacturer: ETC-unknow

Zero crossing detector
This detector contains two comparators with hysteresis. The first comparator has reference at VDD1. The refer-
ence of the second one is VDD1-1V. Both outputs ZC1 and ZC2 are HIGH during positive half wave of the mains
and LOW during negative half wave of the mains.
ADC
This is a 4-bit ADC.
Parameter
Parameter
Speed measurement
The chip has an input SPD to measure the motor speed. It is possible to connect a low cost inductor (between
SPD and VSS) or a hall sensor with digital output. . The type of sensor can be defined by mask option. In case
of the use of a coil the input levels are defined in the table below. In case of the use of a hall sensor, the levels
are cmos compatible.
Parameter
Note:
When used with a coil, the input voltage is on chip limited to approximately –280mV. However the current in-
jected or pulled out of this pin should not increase above 1 mA.
When used with a hall sensor, the SPD input does not have an internal pull up resistor.
Ignition driver
This driver operates as a current generator to fire the triac.
Parameter
MLX90804 Speed regulator for universal motors
High level threshold 1
Low level threshold 1
High level threshold 2
Low level threshold 2
High comparator level
Low comparator level
Triac gate current
Resolution
Reference voltage
Symbol
Symbol
Symbol
Symbol
Vzc1h
Vzc1l
Vzc2h
Vzc2l
SPDHI
SPDLO
ITRG
Vref
Test Conditions
Test Conditions
Referenced to VDD1
Referenced to VDD1
Referenced to VDD1
Referenced to VDD1
Test Conditions
Test Conditions
VDD1 > Vaporh
Speed regulator for universal motors
Page 4
Min
Min
Min
Min
30
MLX90804
Rev 1.0
VDD
Typ
Typ
-0.5
-1.5
-2.5
Typ
Typ
-80
0.5
80
60
4
Max Units
Max Units
Max Units
Max Units
90
30/Jun/00
V
V
V
V
mV
mV
mA
bits