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參數(shù)資料
| 型號： | A8958 |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | Voice-Coil Motor Driver(音頻線圈電機(jī)驅(qū)動器) |
| 中文描述： | 語音線圈電動機(jī)驅(qū)動器（音頻線圈電機(jī)驅(qū)動器） |
| 文件頁數(shù)： | 3/8頁 |
| 文件大?。?/td> | 113K |
| 代理商： | A8958 |
8958
VOICE COIL
MOTOR DRIVER
www.allegromicro.com
ELECTRICAL CHARACTERISTICS at T
A
= +25
°
C, V
CC
= V
BB
= 12 V
Limits
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Units
Logic Supply Voltage Range
V
CC
Operating
8.0
12
16
V
Logic Supply UV Threshold
V
CC
High-to-low transition
—
2.8
3.0
V
Logic Supply UV Hysteresis
V
CC
—
200
—
mV
Supply Current
I
BB
V
OUT
= 6 V, no load
—
2.0
—
mA
I
CC
—
23
—
mA
Inhibited Supply Current
—
I
BB
+ I
CC
, V
2
≥
1.7 V
—
3.0
8.0
mA
Thermal Shutdown Temp.
T
J
—
165
—
°
C
Thermal Shutdown Hysteresis
T
J
—
8.0
—
°
C
Output Power Drivers
Output Saturation Voltage
V
SAT
I
OUT
= 250 mA
—
250
—
mV
I
OUT
= 800 mA
—
450
—
mV
I
OUT
= -250 mA
—
750
—
mV
I
OUT
= -800 mA
—
950
—
mV
Total Saturation Voltage
(Source + Sink)
V
SAT
I
LOAD
= 250 mA
—
1.0
1.4
V
I
LOAD
= 800 mA
—
1.4
2.0
V
Input Offset Voltage
V
IO
V
CM
= 6 V
—
5.0
8.0
mV
Input Offset Drift
V
IO
—
—
25
μ
V/
°
C
Input Bias Current
I
IN
Except IN
A+
, V
CM
= 6 V
—
-150
-500
nA
IN
A+
to SENSE
IN+
= 12 k
, T
J
= 25
°
C
69
84
105
μ
A/V
Input Offset Current
I
IO
IN
B
only, V
CM
= 6 V
—
—
200
nA
Differential Sense Input Current
I
ID
I
OUT
= 5 mA
—
±
300
—
μ
A
I
OUT
= 500 mA
—
3.0
—
mA
Large Signal Gain
A
VS
V
OUT
= 2 V to 10 V, I
OUT
=
±
500 mA
1.5
5.0
—
V/mV
Slew Rate
SR
—
4.0
—
V/
μ
s
Unity Gain Bandwidth
BW
Amplifier A
0.5
1.0
1.7
MHz
Amplifier B
0.5
2.0
2.2
MHz
Common-Mode Rejection
k
CMR
V
CM
= 1 V to 10 V
70
90
—
dB
Clamp Diode Forward Voltage
V
F
I
F
= 800 mA, V
2
≥
1.7 V
—
1.0
1.2
V
High-Side Current Limit
I
OUT
T
J
= 25
°
C
—
1.0
1.2
A
Power Supply Rejection
k
SVR
V
CC
= 4 V to 15 V, V
CM
= 1.5 V
70
90
—
dB
Continued next page...
Negative current is defined as coming out of (sourcing) the specified device terminal.
Typical Data is for design information only.
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