AS1505-T 查看數據表（PDF） - austriamicrosystems AG
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AS1505-T
austriamicrosystems AG
AS1505-T Datasheet PDF : 17 Pages
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AS1504, AS1505
Data Sheet
austriamicrosystems
Table 5. AS1504/AS1505 Serial Data Word Format
Address Bits
Data Bits
B10
B9
B8
B7
B6
B5
B4
B3
B2
B1
B0
A2
A1
A0
D7
D6
D5
D4
D3
D2
D1
D0
MSB
LSB
MSB
LSB
210
29
28
27
26
25
24
23
22
21
20
The AS1504 provides a mid-scale reset activated by pin RSN which simplifies settings on initial power up. The AS1505
has a high- and low-side reference (pins VREFH and VREFL) to determine independent positive full-scale and zero-scale
settings to optimize resolution. -
Both devices feature a power-on reset which resets them to mid-scale.
Both models feature a low-power shutdown mode which places the device into low power-consumption mode resulting
in only leakage currents being consumed from the power supply, VREFx inputs, and all 8 outputs. In shutdown mode the
DACx latch settings are maintained. When returning to normal operation from shutdown mode, the DACx outputs
return to their previous voltage settings.
Figure 13. Serial Data Input Timing Diagram; RSN = 1
1
SDI
0
1
CLK
0
1
CSN
0
VOUT +5V
0V
Ax or Dx
Ax or Dx
tDS
tDH
tCH
tCS1
tCSS
tCL
tCSH
tCSW
tS
± 1 LSB Error Band
± 1 LSB
Figure 14. Reset Timing Diagram
1
RSN
0
+5V
VOUT
+2.5V
tRS
tS
± 1 LSB Error Band
± 1 LSB
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