參數(shù)資料
型號(hào): AS1542-BTST
廠商: AUSTRIAMICROSYSTEMS AG
元件分類: ADC
英文描述: 12-bit 16-CH 1Msps w Sequencer; Package Type: TSSOP-28
封裝: TSSOP-28
文件頁(yè)數(shù): 8/29頁(yè)
文件大?。?/td> 964K
代理商: AS1542-BTST
www.austriamicrosystems.com
Revision 1.00
8 - 29
AS1542
Data Sheet - Electrical Characteristics
Timing Specifications
V
DD
= 2.7 to 5.25V, VDRIVE
V
DD
, REFIN = 2.5V; T
AMB
= -40 to +85°C (unless otherwise specified). Specifications
based on load circuit shown in
Figure 3 on page 8
.
Table 4.
Symbol
Min
Typ
Max
Unit
f
SCLK
0.01
20
MHz
SCLK frequency
t
CP
50
ns
SCLK periode
Minimum quiet time required between bus relinquish and next
conversion start.
t
CSS
10
ns
CSN Fall to SCLK Fall Setup
t
CSDOE
20
ns
CSN Fall to DOUT Enabled.
t
CSDOV
40
ns
CSN Fall to DOUT Valid.
t
CL
0.4
t
CP
ns
SCLK Pulse Width Low.
t
CH
0.4 t
CP
ns
SCLK Pulse Width High.
t
DOH
10
ns
SCLK Fall to DOUT Hold.
t
DOV
50
ns
SCLK Fall to DOUT Valid.
t
DOD
15
50
ns
SCLK Fall to DOUT Disable.
t
DS
20
ns
DIN to SCLK Fall Setup.
t
DH
5
ns
DIN to SCLK Fall Hold.
t
CSH
20
ns
Sixteenth SCLK Fall to CSN Rise Hold.
t
WAKEUP
1
μs
Power-up time from auto shutdown mode.
Figure 3. Load Circuit for Digital Output Timing Specifications
Figure 4. Serial Interface Timing Diagram
Description
t
QUIET
50
ns
C
LOAD
25pF
DOUT
VDD/2
200μA
I
OL
200μA
I
OH
2
5
4
3
6
12
14
1
15
16
DB2
DB1
DB0
t
CONVERT
DB10
DB11
ADDR0
ADDR1
ADDR2
Tri-State
t
DOD
t
CH
t
DOH
t
DOV
t
CL
SCLK
CSN
DOUT
DIN
Tri-State
ADDR3
t
CSDOE
t
DS
t
DH
t
CSS
t
CSH
4 ID Bits
t
CSDOV
B
t
QUIET
ADDR3
ADDR2
ADDR1
ADDR0
SEQ
WRITE
DC
DC = Don’t Care
DC
DC
DB3
SE/FDN
13
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