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參數資料
| 型號： | MAX5251ACPP |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | DAC |
| 英文描述： | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
| 中文描述： | QUAD, SERIAL INPUT LOADING, 12 us SETTLING TIME, 10-BIT DAC, PDIP20 |
| 封裝： | PLASTIC, DIP-20 |
| 文件頁數： | 10/16頁 |
| 文件大?。?/td> | 146K |
| 代理商： | MAX5251ACPP |
M
Figure 5 shows the serial-interface timing requirements.
The chip-select pin (
CS
) must be low to enable the
DAC’s serial interface. When
CS
is high, the interface
control circuitry is disabled.
CS
must go low at least
t
CSS
before the rising serial clock (SCLK) edge to prop-
erly clock in the first bit. When
CS
is low, data is
clocked into the internal shift register via the serial-data
input pin (DIN) on SCLK’s rising edge. The maximum
guaranteed clock frequency is 10MHz. Data is latched
into the appropriate MAX5251 input/DAC registers on
CS
’s rising edge.
The programming command Load-All-DACs-From-Shift-
Register allows all input and DAC registers to be simul-
taneously loaded with the same digital code from the
input shift register. The no operation (NOP) command
leaves the register contents unaffected and is useful
when the MAX5251 is configured in a daisy chain (see
the Daisy Chaining Devices section). The command to
change the clock edge on which serial data is shifted
out of DOUT also loads data from all input registers to
their respective DAC registers.
S erial-Data Output (DOUT )
The serial-data output, DOUT, is the internal shift regis-
ter’s output. The MAX5251 can be programmed so that
data is clocked out of DOUT on SCLK’s rising edge
(Mode 1) or falling edge (Mode 0). In Mode 0, output
data at DOUT lags input data at DIN by 16.5 clock
cycles, maintaining compatibility with Microwire,
SPI/QSPI, and other serial interfaces. In Mode 1, output
data lags input data by 16 clock cycles. On power-up,
DOUT defaults to Mode 0 timing.
User-Programmable Logic Output (UPO)
The user-programmable logic output, UPO, allows an
external device to be controlled via the MAX5251 serial
interface (Table 1).
+3V, Quad, 10-Bit Voltage-Output DAC
with S erial Interfac e
10
______________________________________________________________________________________
Table 1. Serial-Interface Programming Commands
“X” = Don’t care
16-BIT SERIAL WORD
FUNCTION
A1
A0
C1
C0
D9.................D0
MSB.............LSB
S1
S0
0
0
1
1
0
1
0
1
0
0
0
0
1
1
1
1
10-bit DAC data
10-bit DAC data
10-bit DAC data
10-bit DAC data
0
0
0
0
0
0
0
0
Load input register A; DAC registers unchanged.
Load input register B; DAC registers unchanged.
Load input register C; DAC registers unchanged.
Load input register D; DAC registers unchanged.
0
0
1
1
0
1
0
1
1
1
1
1
1
1
1
1
10-bit DAC data
10-bit DAC data
10-bit DAC data
10-bit DAC data
0
0
0
0
0
0
0
0
Load input register A; all DAC registers updated.
Load input register B; all DAC registers updated.
Load input register C; all DAC registers updated.
Load input register D; all DAC registers updated.
0
1
0
0
XXXXXXXXXX
X
X
Update all DAC registers from their respective input registers (also exit
shutdown mode).
1
1
0
0
0
0
1
0
1
0
0
0
1
1
0
0
0
0
0
0
10-bit DAC data
XXXXXXXXXX
XXXXXXXXXX
XXXXXXXXXX
XXXXXXXXXX
0
X
X
X
X
0
X
X
X
X
Load all DAC registers from shift register (also exit shutdown mode).
Enter shutdown mode (provided
PDL
= 1).
UPO goes low (default).
UPO goes high.
No operation (NOP) to DAC registers
1
1
1
0
XXXXXXXXXX
X
X
Mode 1, DOUT clocked out on SCLK’s rising edge. All DAC registers
updated.
1
0
1
0
XXXXXXXXXX
X
X
Mode 0, DOUT clocked out on SCLK’s falling edge. All DAC registers
updated (default).
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| MAX5251ACPP+ | 功能描述:數模轉換器- DAC 10-Bit 4Ch Precision DAC RoHS:否 制造商:Texas Instruments 轉換器數量:1 DAC 輸出端數量:1 轉換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間:1 us 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| MAX5251AEAP | 功能描述:數模轉換器- DAC RoHS:否 制造商:Texas Instruments 轉換器數量:1 DAC 輸出端數量:1 轉換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間:1 us 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| MAX5251AEAP+ | 功能描述:數模轉換器- DAC 10-Bit 4Ch Precision DAC RoHS:否 制造商:Texas Instruments 轉換器數量:1 DAC 輸出端數量:1 轉換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間:1 us 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| MAX5251AEAP+T | 功能描述:數模轉換器- DAC 10-Bit 4Ch Precision DAC RoHS:否 制造商:Texas Instruments 轉換器數量:1 DAC 輸出端數量:1 轉換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間:1 us 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| MAX5251AEAP-T | 功能描述:數模轉換器- DAC RoHS:否 制造商:Texas Instruments 轉換器數量:1 DAC 輸出端數量:1 轉換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間:1 us 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
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