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参数资料
| 型号： | AD7492ARUZ-4 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 11/24页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT REF/CLOCK 24TSSOP |
| 标准包装： | 62 |
| 位数： | 12 |
| 采样率（每秒）： | 400k |
| 数据接口： | 并联 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 16.5mW |
| 电压电源： | 模拟和数字 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 24-TSSOP |
| 包装： | 管件 |
| 输入数目和类型： | 1 个单端，单极 |
| 配用： | EVAL-AD7492CBZ-ND - BOARD EVALUATION FOR AD7492 |
AD7492
Rev. A | Page 19 of 24
ADSP-21065Lto AD7492 Interface
Figure 30 shows a typical interface between the AD7492 and the
ADSP-21065L SHARC processor. This interface is an example
of one of three DMA handshake modes. The MSX control line is
actually three memory select lines. Internal ADDR25–24 are
decoded into MS3-0, these lines are then asserted as chip selects.
The DMAR1 (DMA Request 1) is used in this setup as the
interrupt to signal end of conversion. The rest of the interface is
standard handshaking operation.
AD7492
ADDRESS BUS
DATA BUS
1ADDITIONAL PINS OMITTED FOR CLARITY.
OPTIONAL
ADDRESS
DECODER
ADDRESS
LATCH
ADDRESS
BUS
ADSP-21065L1
ADDR0 TO
ADDR23
MSX
DMAR1
RD
BUSY
DB0 TO DB9
(DB11)
CONVST
CS
RD
D0 TO 31
01
128
-03
0
Figure 30. ADSP-21065L to AD7492 Interface
TMS320C25 to AD7492 Interface
Figure 31 shows an interface between the AD7492 and the
TMS320C25. The CONVST signal can be applied from the
TMS320C25 or from an external source. The BUSY line
interrupts the digital signal processor when conversion is
completed. The TMS320C25 does not have a separate RD
output to drive the AD7492 RD input directly. This has to be
generated from the processor STRB and R/W outputs with the
addition of some glue logic. The RD signal is OR-gated with the
MSC signal to provide the WAIT state required in the read cycle
for correct interface timing. The following instruction is used to
read the conversion from the AD7492:
IN D,ADC
where:
D is the data memory address.
ADC is the AD7492 address.
The read operation must not be attempted during conversion.
ADDRESS BUS
1ADDITIONAL PINS OMITTED FOR CLARITY.
OPTIONAL
DATA BUS
TMS320C251
IS
STRB
READY
MSC
R/W
AD7492
ADDRESS
DECODER
BUSY
DB0 TO DB9
(DB11)
CONVST
CS
RD
DMD0 TO DMD15
A0 TO A15
01
12
8-
03
1
Figure 31. TMS320C25 to AD7492 Interface
PIC17C4x to AD7492 Interface
Figure 32 shows a typical parallel interface between the AD7492
and PIC17C4x. The microcontroller sees the ADC as another
memory device with its own specific memory address on the
memory map. The CONVST signal can be controlled by either
the microcontroller or an external source. The BUSY signal
provides an interrupt request to the microcontroller when a
conversion ends. The INT pin on the PIC17C4x must be
configured to be active on the negative edge. Port C and Port D
of the microcontroller are bidirectional and used to address the
AD7492 and to read in the 12-bit data. The OE pin on the PIC
can be used to enable the output buffers on the AD7492 and
perform a read operation.
1ADDITIONAL PINS OMITTED FOR CLARITY.
OPTIONAL
PIC17C4x1
OE
INT
ALE
AD7492
ADDRESS
LATCH
BUSY
DB0 TO DB9
(DB11)
CONVST
CS
RD
ADDRESS
DECODER
01128
-032
AD0 TO AD15
Figure 32. PIC17C4x to AD7492 Interface
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7492ARUZ-41 | 制造商:AD 制造商全称:Analog Devices 功能描述:1.25 MSPS, 16 mW Internal REF and CLK, 12-Bit Parallel ADC |
| AD7492ARUZ-4REEL | 功能描述:IC ADC 12BIT REF/CLOCK 24TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:16 采样率（每秒）:45k 数据接口:串行 转换器数目:2 功率耗散（最大）:315mW 电压电源:模拟和数字 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC W 包装:带卷 (TR) 输入数目和类型:2 个单端，单极 |
| AD7492ARUZ-4REEL1 | 制造商:AD 制造商全称:Analog Devices 功能描述:1.25 MSPS, 16 mW Internal REF and CLK, 12-Bit Parallel ADC |
| AD7492ARUZ-4REEL7 | 功能描述:IC ADC 12BIT REF/CLOCK 24TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:16 采样率（每秒）:45k 数据接口:串行 转换器数目:2 功率耗散（最大）:315mW 电压电源:模拟和数字 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC W 包装:带卷 (TR) 输入数目和类型:2 个单端，单极 |
| AD7492ARUZ-4REEL71 | 制造商:AD 制造商全称:Analog Devices 功能描述:1.25 MSPS, 16 mW Internal REF and CLK, 12-Bit Parallel ADC |
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