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参数资料
| 型号： | 8932-A |
| 厂商： | Allegro MicroSystems, Inc. |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | VOICE-COIL MOTOR DRIVER |
| 中文描述： | 音圈电机驱动 |
| 文件页数： | 3/8页 |
| 文件大小： | 164K |
| 代理商： | 8932-A |
8932-A
VOICE-COIL MOTOR DRIVER
www.allegromicro.com
ELECTRICAL CHARACTERISTICS at T
A
= +25
°
C, V
CC
= V
DD
= 5.0 V, V
REF
= V
IN
= 2.0 V,
Load = 150
μ
H/3.5
(unless otherwise noted).
Limits
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Units
Error Amplifier
Input Offset Voltage
V
IO
I
LOAD
= 0 mA
—
—
±
50
mV
Current Gain
A
iH
H GAIN
≥
3.5 V
7200
8000
8800
—
A
iL
H GAIN
≤
0.7 V
1800
2000
2200
—
Current Gain Linearity
E
L(adj)
I
OUT
= 5 mA to 500 mA, A
i
= A
iL
—
—
±
10
%
I
OUT
= 5 mA to 500 mA, A
i
= A
iH
—
—
±
10
%
Reference Voltage Range
V
REF
1.5
—
2.5
V
Voltage-Sense Amplifier
Voltage Gain
A
VD
0.36
0.40
0.44
—
Output Offset Voltage
V
OO
I
LOAD
= 0 mA
—
—
±
25
mV
Current-Sense Amplifier
Amplifier Error
E
VD
(R
s
x I
LOAD
/ (A
i
x V
SENSE
)) - 1
—
1.0
—
—
Input Offset Voltage
V
iO
I
LOAD
= 0 mA, A
i
= A
iL
—
—
±
25
mV
Output Drivers
Total On Resistance
r
DS(on)
I
LOAD
= 100 mA
—
2.0
2.5
(Source + Sink)
I
LOAD
= 500 mA
—
2.0
2.5
Retract Output Voltage Error
E
OUT(PN)
V
OUT(P)
- V
OUT(N)
- V
RETSET
—
—
±
100
mV
Full Power Bandwidth
BW
-3 dB
1.0
—
—
kHz
Uncommitted Op Amp
Voltage Gain
A
VS
—
91
—
dB
Unity Gain Bandwidth
BW
—
1.0
—
MHz
Max. Load Capacitance
C
LOAD
—
40
—
pF
Slew Rate
SR
—
4.2
—
V/
μ
s
Output Voltage
V
O
V
SWITCH
≤
0.7 V
2.5
—
3.5
V
V
OSW
V
SWITCH
≥
3.5 V
2.5
—
3.5
V
Max. Output Current
I
O
—
±
250
—
μ
A
Input Offset Voltage
V
IO
—
<
±
10
—
mV
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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