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SABRE-LL-I Datasheet(PDF) 81 Page - STMicroelectronics

Part # SABRE-LL-I
Description  Combo motor driver
PDF  141 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

SABRE-LL-I Datasheet(HTML) 81 Page - STMicroelectronics

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SABRE-LL-I
Current DAC circuit
81/141
same register being DacValue[0] the least significant bit and DacValue[5] the most
significant bit.
The current DAC has three possible current ranges that can be selected using the
DacRange[1:0] bits in the CurrDacCtrl register . The DAC range selection table is shown
here below:
By changing LSB current value, all steps will change following this relation:
Istep(N) = N * ILSB
where N is the value of DacValue[5:0] bits.
Table 58.
Current DAC truth
DacRange[1]
DacRange[0]
LSB typical current
ILSB typ
Full scale typical
current IFULL typ
0
0
Disabled
Disabled
0
1
10 µA
0.63 mA
1
0
100 µA
6.3 mA
11
1 mA
63 mA
Table 59.
Current DAC specification
Parameter
Description
Test condition
Min
Typ
Max
Unit
VR
Pin voltage operative range
(1)
1.
All parameters are guaranteed in the range between VOL and VR Max.
0.7
5.5
V
IOUT_OFF
Output off leakage current
DacValue[5:0] = 000000
-1
+1
µA
IFULL_ERR_01 Full scale current error
DacRange[1:0] =01
DacValue[5:0] = 111111
-10
10
% of
IFULL typ
IFULL_ERR_10 Full scale current error
DacRange[1:0] =10
DacValue[5:0] = 111111
-13
13
% of
IFULL typ
IFULL_ERR_11 Full scale current error
DacRange[1:0] =11
DacValue[5:0] = 111111
-12
12
% of
IFULL typ
INL10_11
Integral non-linearity for 10
and 11 ranges
±2
LSB
DNL10_11
Differential non-linearity for
10 and 11 ranges
±2
LSB
INL01
Integral non-linearity for 01
range
±1
LSB
DNL01
Differential non-linearity for
01 range
±1
LSB
RCurrDac_res
Gpio[8] divider total
resistance
-25%
45
+25%
k
Ω
RCurrDac_ratio Gpio[8] divider ratio
-2.5%
3/5
+2.5%
tset
Settling time
(2)
2.
Measured from DacValue[5:0] change in SPI interface.
5µs



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