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L7250 数据表(PDF) 7 Page - STMicroelectronics

部件名 L7250
功能描述  5V & 12V SPINDLE AND VCM MOTORS DRIVER
PDF  46 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L7250 数据表(HTML) 7 Page - STMicroelectronics

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L7250
CURdacr
DAC resolution
3
bit
CURdac_L DAC output
Reg04H ‘b4b3b2’ = 000
250
mV
CURdac_H DAC output
Reg04H ‘b4b3b2’ = 111
600
mV
CURlin
DAC linearity
-10
+10
mV
Cbrake
Icbrake
VCbrake leakage
VCbrake=5V
1
µA
VCM SECTION
CURRENT SENSE AMPLIFIER
Vts
Common mode input voltage
range.
GBD - not tested
-0.6
VM+1
V
Sns _voff Input offset voltage
-12
12
mV
Sns_gain0
Differential Voltage GAIN0
Reg09H ‘b7’ = 0
-5%
4.5
+5%
Sns _gain1 Differential Voltage GAIN1
Reg09H ‘b7’ = 1
-5%
16
+5%
Sns_low
Sns_high
VSENSE output saturation
voltage
Iload=+/-1mA
Vin_diff=+/- 500mV
4.75
250
mV
V
sns_slew
Output slew rate
Cload=50pF
1
V/µs
Sns_band
-3dB Bandwidth
Guaranteed by design
200
400
kHz
sns _cmrr Common mode rejection ratio
f < 10 KHz, tested at DC only
CMRR=AV DIFF/AV CM
70
dB
sns _svrr
supply voltage rejection ratio VCV f < 10 KHz, tested at DC only
60
dB
ERROR SUMMING AMPLIFIER
err _gain Voltage gain
no load
60
dB
err _band
Unity gain bandwidth
Guaranteed by design
4
MHz
err _slew Output Slew Rate
Cload=50pF
1.5
V/
µS
err _ibias
Input bias current
1
µA
err _off
Input offset voltage
-10
0
10
mV
err_svrr
supply voltage rejection ratio
f < 10 KHz, tested at DC only
60
dB
err _clamp
low
Low output (clamp) voltage
Isink = 1 mA, referred to Vref25
TBD
V
ELECTRICAL CHARACTERISTCS (continued)
POWER SUPPLY [VCC5 & VCV] VCC5 = 5V ±10%, VCV = 12V ±10%. Tamb = 25°C (unless otherwise specified)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit



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