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參數(shù)資料
| 型號： | TLV5623I |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 2.7 V TO 5.5 V LOW POWER 8-BIT DIGITAL-TO-ANALOG CONVERTERS WITH POWER DOWN |
| 中文描述： | 2.7 V至5.5 V低功耗8位數(shù)字至模擬與電源降壓轉(zhuǎn)換器 |
| 文件頁數(shù)： | 12/18頁 |
| 文件大小： | 242K |
| 代理商： | TLV5623I |
TLV5623C, TLV5623I
2.7 V TO 5.5 V LOW POWER 8-BIT DIGITAL-TO-ANALOG
CONVERTERS WITH POWER DOWN
SLAS231 – JUNE 1999
12
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
serial interface (continued)
If there is no need to have more than one device on the serial bus, then CS can be tied low. Figure 16 shows
an example of how to connect the TLV5623 to a TMS320, SPI, or Microwire port using only three pins.
TMS320
DSP
FSX
DX
CLKX
TLV5623
FS
DIN
SCLK
CS
SPI
SS
MOSI
SCLK
TLV5623
FS
DIN
SCLK
CS
Microwire
I/O
SO
SK
TLV5623
FS
DIN
SCLK
CS
Figure 16. Three-Wire Interface
Notes on SPI and Microwire: Before the controller starts the data transfer, the software has to generate a falling
edge on the I/O pin connected to FS. If the word width is 8 bits (SPI and Microwire), two write operations must
be performed to program the TLV5623. After the write operation(s), the DAC output is updated automatically
on the sixteenth positive clock edge.
serial clock frequency and update rate
The maximum serial clock frequency is given by:
fSCLKmax
1
twH(min)
twL(min)
20 MHz
The maximum update rate is:
fUPDATEmax
1
16
t
wH(min)
t
wL(min)
1.25 MHz
The maximum update rate is a theoretical value for the serial interface, since the settling time of the TLV5623
has to be considered also.
data format
The 16-bit data word for the TLV5623 consists of two parts:
Control bits
(D15 . . . D12)
New DAC value
(D11 . . . D0)
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
X
SPD
PWR
X
New DAC value (8 bits)
0
0
0
0
X: don’t care
SPD: Speed control bit.
PWR: Power control bit.
1
→
fast mode
1
→
power down
0
→
slow mode
0
→
normal operation
In power-down mode, all amplifiers within the TLV5623 are disabled.
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| TLV5623ID | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 8bit DAC Serial RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| TLV5623IDG4 | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 8-Bit 3 us DAC Serial Input RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| TLV5623IDGK | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 8bit DAC Serial RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| TLV5623IDGKG4 | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 8-Bit 3 us DAC Serial Input RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| TLV5623IDGKR | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 8-Bit 3 us DAC Serial Input RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
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