參數(shù)資料
型號(hào)： MAX5755UTN+T
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 11/25頁(yè)
文件大小： 0K
描述： IC DAC 14BIT 32CHAN SER 56-TQFN
標(biāo)準(zhǔn)包裝： 2,500
設(shè)置時(shí)間： 20µs
位數(shù)： 14
數(shù)據(jù)接口： 串行
轉(zhuǎn)換器數(shù)目： 32
電壓電源： 模擬和數(shù)字
工作溫度： 0°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 56-WFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝： 56-TQFN-EP（8x8）
包裝： 帶卷 (TR)
輸出數(shù)目和類型： 32 電壓，單極
采樣率（每秒）： *
MAX5753/MAX5754/MAX5755
32-Channel, 14-Bit, Voltage-Output
DACs with Serial Interface
______________________________________________________________________________________
19
SING
When SING = 0 (default power-up mode), the device is
in daisy-chain mode. DOUT follows DIN after 32 clock
cycles. For the read command, DOUT provides the
read data in the next cycle following CS rising edge.
The 14 data bits and S1 and S0 of the previous com-
mand word are clocked out on the last 16 clock cycles
of the current command word.
When SING = 1, the device is in stand-alone mode. To
reduce the time it takes to read data out, the read data
is provided at DOUT as the 14 data bits and S1 and S0
of the current command are clocked in. The device
acts on an incoming command word independent of
the rising edge of CS.
Daisy-Chain Operation
Any number of the MAX5753/MAX5754/MAX5755
devices can be daisy chained by connecting the DOUT
of one device to the DIN of another device in a chain. All
devices must be in SING = 0 mode. Connecting the CS
inputs of all devices together eliminates the need to
issue NOP commands to devices early in the chain (see
Figure 4). The maximum clock frequency (fSCLK) is
10MHz when DVDD < +4.75V.
Data Readback
The contents of the MAX5753/MAX5754/MAX5755 DAC
and configuration registers can be read on DOUT by
issuing a read-data command. Setting control bits C2,
C1, and C0 = 100, puts the device in read-data mode.
The address bits select the register to be read. The
contents of the register (14 data bits and S1 and S0)
are clocked out at DOUT. The output-data format
depends on the status of DSP and SING. Table 10
shows the manner in which data is written to DOUT. Note
that when the device is in DSP mode (DSP = 0), only the
14-bit data and S1 and S0 of the selected register is writ-
ten to DOUT.
Table 10. Read-Data Modes with SING and
DSP Controls
DSP
SING
CONFIGURATION
DESCRIPTION
READ DATA AT DOUT
0
Stand alone
DOUT provides the 16 data bits from the previous command word. Data
appears at DOUT on the last 16 clock edges of the current command word.
See Figure 7.
0
1
Stand alone
DOUT provides the 16 data bits from the current command word. Data appears at
DOUT on the last 16 clock edges of the current command word. See Figure 7.
1
0
Daisy chain
Data on DOUT follows the current command word after 32 clock cycles. For
read commands, the read data from the previous command word appears at
DOUT on the last 16 clock edges of the current command word. See Figure 4.
11
Multiple DOUTs connected
in parallel (not daisy
chained)
DOUT provides the 16 data bits from the current command word. Data appears
at DOUT on the last 16 clock edges of the current command word. For read
commands, the read data from the current command word appears at DOUT
on the last 16 clock edges of the current command word. See Figures 8 and 9.
CONTROLLER
DEVICE
DIN(0)
DOUT(0)
1
SCLK
CS
DSP
MAX575_
DIN(1)
DOUT(1)
SCLK
CS
DSP
MAX575_
DIN(2)
DOUT(2)
SCLK
CS
DSP
MAX575_
Figure 4. Daisy-Chain Configuration
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