A8287 ALLEGRO [Allegro MicroSystems], A8287 Datasheet - Page 4

• Manufacturer Part Number: A8287
• Description: LNB Supply and Control Voltage Regulator
• Manufacturer: ALLEGRO [Allegro MicroSystems]

Continued on next page
ELECTRICAL CHARACTERISTICS (continued) at T
Tone Characteristics
Tone Frequency
Tone Pull-Down Current
Tone Turn-On and Turn-Off Delays
External Tone Logic Input
Input Leakage
Tone Detector Input Amplitude
Tone Detector Frequency Capture
Tone Detector Input Impedance
Tone Detector Output Voltage
Tone Detector Output Leakage
I
Logic Input (SDA,SCL) Low Level
Logic Input (SDA,SCL) High Level
Input Hysteresis
Logic Input Current
Output Voltage (SDA, IRQ)
Output Leakage (SDA, IRQ)
SCL Clock Frequency
Output Fall Time
Bus Free Time Between Stop and Start
Hold Time for Start Condition
Setup Time for Start Condition
SCL Low Time
SCL High Time
Data Setup Time
Data Hold Time
Setup Time for Stop Condition
2
C
Interface
Characteristics
Symbol
t
t
t
t
t
f
I
V
HD:STA
SU:DAT
HD:DAT
SU:STO
SU:STA
t
V
Z
t
t
V
V
f
t
TONE
TONE
V
V
V
f
V
t
HIGH
I
I
LOW
DEL
I
CLK
BUF
I
TDI
HYS
OF
OL
OL
TDI
TDI
IN
IL
OL
OL
IH
IH
IL
IL
LNB Supply and Control Voltage Regulator
www.allegromicro.com
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]
–
–
Using EXTM pin
–
–
–
f
600 mV
See note 1
Tone present, I
Tone absent, V
–
–
–
V
I
V
–
V
See I
See I
See I
See I
See I
See note1; I
See I
See I
IN
LOAD
IN
O
IH
= 22 kHz
= 0 V to 7 V
to V
A
= 0 V to 7 V
= 3 mA
= +25°C, V
2
2
2
2
2
2
2
C Interface Timing Diagram
C Interface Timing Diagram
C Interface Timing Diagram
C Interface Timing Diagram
C Interface Timing Diagram
C Interface Timing Diagram
C Interface Timing Diagram
pp
IL
sinewave
Test Conditions
2
C Interface Timing Diagram
LOAD
O
= 7 V
IN
= 3 mA
= 10 to 16 V (unless otherwise noted)
Min.
17.6
260
–10
100
A8285/A8287
1.3
0.6
0.6
1.3
0.6
0.6
20
30
–1
–
2
–
–
–
–
–
2
–
–
–
0
–
0
<±1.0
Typ.
150
8.6
22
40
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Max.
1000
26.4
400
250
900
0.8
0.4
0.8
0.4
24
50
10
10
10
1
–
1
–
–
–
–
–
–
–
–
–
–
Units
kHz
kHz
kHz
mV
mA
mV
µA
kΩ
µA
µs
µA
µA
ns
µs
µs
µs
µs
µs
ns
ns
µs
V
V
V
V
V
V
4