Power-Down Lockout (PDL)
The power-down lockout pin PDL disables software
shutdown when low. When in shutdown, transitioning
PDL from high to low wakes up the part with the output
set to the state prior to shutdown. PDL could also be
used to asynchronously wake up the device.
Daisy Chaining Devices
Any number of MAX525s can be daisy chained by con-
necting the DOUT pin of one device to the DIN pin of
the following device in the chain (Figure 7).
Since the MAX525’s DOUT pin has an internal active
pullup, the DOUT sink/source capability determines the
time required to discharge/charge a capacitive load.
Refer to the serial-data-out VOH and VOL specifications
in the Electrical Characteristics.
Figure 8 shows an alternate method of connecting sev-
eral MAX525s. In this configuration, the data bus is
common to all devices; data is not shifted through a
daisy chain. More I/O lines are required in this configu-
ration because a dedicated chip-select input (CS) is
required for each IC.
MAX525
Low-Power, Quad, 12-Bit Voltage-Output DAC
with Serial Interface
______________________________________________________________________________________
11
CS
SCLK
DIN
DOUT
(MODE 1)
MSB FROM
PREVIOUS WRITE
MSB FROM
PREVIOUS WRITE
COMMAND
EXECUTED
9
8
16
1
A0
A1
D0
C1
C0
D11 D10
D9
D6
D5
D4
D3
D2
D1
D8
D7
DOUT
(MODE 0)
A0
A1
D0
A1
C1
C0
D11 D10
D9
D6
D5
D4
D3
D2
D1
D8
D7
A0
A1
D0
A1
C1
C0
D11 D10
D9
D6
D5
D4
D3
D2
D1
D8
D7
DATA PACKET (N)
DATA PACKET (N-1)
DATA PACKET (N)
DATA PACKET (N-1)
DATA PACKET (N)
Figure 5. Serial-Interface Timing Diagram
SCLK
DIN
DOUT
tCSO
tCSS
tCL
tCH
tCP
tDO1
tCSW
tCS1
tDO2
tCSH
tDS
tDH
CS
Figure 6. Detailed Serial-Interface Timing Diagram
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相关代理商/技术参数
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MAX525AEAP-T 功能描述:数模转换器- DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube
MAX525AEPP 功能描述:数模转换器- DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube
MAX525AEPP+ 功能描述:数模转换器- DAC 12-Bit 4Ch Precision DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube
MAX525AMJP 功能描述:数模转换器- DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube
MAX525BC/D 功能描述:数模转换器- DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube
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