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参数资料
| 型号： | TLV5639IPWG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | DAC |
| 英文描述： | PARALLEL, WORD INPUT LOADING, 3.5 us SETTLING TIME, 12-BIT DAC, PDSO20 |
| 封装： | GREEN, PLASTIC, TSSOP-20 |
| 文件页数： | 5/23页 |
| 文件大小： | 477K |
| 代理商： | TLV5639IPWG4 |
www.ti.com
TLV5639 INTERFACED to TMS320C203 DSP
HARDWARE INTERFACE
A2
A3
A4
A6
IS
D(0–11)
5 V
A
B
C
G1
G2A
G2B
CS
D(0–11)
Y1
WE
REF
To Other Devices Requiring
Voltage Reference
OUT
LDAC
WE
RLOAD
TMS320C203
74AC138
TLV5639
12
REG
A0
SOFTWARE
TLV5639C
TLV5639I
SLAS189C – MARCH 1999 – REVISED JANUARY 2004
Figure 13 shows an example of the connection between the TLV5639 and the TMS320C203 DSP. The only
other device that is needed in addition to the DSP and the DAC is the 74AC138 address decoding circuit . Using
this configuration, the DAC data is at address 0x0084 and the DAC control word is at address 0x0085 within the
I/O memory space of the TMS320C203.
LDAC is tied low so that the output voltage is updated on the rising WE edge.
Figure 13. TLV5639 to TMS320C203 DSP Interface Connection
Writing data or control information to the TLV5639 is done using a single command. For example, the line of
code which reads:
out
62h,
dac_ctrl
writes the contents of address 0x0062 to the I/O address equated to dac_ctrl (0x0085, the address where the
DAC control register has been mapped).
The following code shows how to set the DAC up to use the internal reference and operate in FAST mode by a
write to the control register. Timer interrupts are then enabled and repeatedly generated every 205 s to provide
a timebase for synchronizing the waveform generation. In this example, the waveform is generated by simply
incrementing a counter and outputting the counter value to the DAC data word once every timer interrupt. This
results in a saw waveform.
13
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| TLV5639IDWR | PARALLEL, WORD INPUT LOADING, 3.5 us SETTLING TIME, 12-BIT DAC, PDSO20 |
| TLV5639IDW | PARALLEL, WORD INPUT LOADING, 3.5 us SETTLING TIME, 12-BIT DAC, PDSO20 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TLV5639IPWR | 功能描述:数模转换器- DAC Low Power 12-Bit 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 |
| TLV5639IPWRG4 | 功能描述:数模转换器- DAC Low Power 12-Bit 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 |
| TLV5639QDW | 制造商:Texas Instruments 功能描述:DAC 1CH RES-STRING 12-BIT 20SOIC - Rail/Tube |
| TLV5639QDWR | 制造商:Texas Instruments 功能描述:DAC 1CH RES-STRING 12-BIT 20SOIC - Tape and Reel |
| TLV571 | 制造商:TI 制造商全称:Texas Instruments 功能描述:2.7 V TO 5.5 V, 1-CHANNEL, 8-BIT, PARALLEL ANALOG-TO-DIGITAL CONVERTER |
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