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參數(shù)資料
| 型號(hào)： | MAX1202BCAP |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | ADC |
| 英文描述： | 5v, 8-cHANNEL, sERIAL, 12-bIT adcS WITH 3v dIGITAL iNTERFACE |
| 中文描述： | 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20 |
| 封裝： | 5.30 MM, 0.65 MM PITCH, PLASTIC, SSOP-20 |
| 文件頁數(shù)： | 22/24頁 |
| 文件大小： | 309K |
| 代理商： | MAX1202BCAP |
M
5V, 8-Channel, S erial, 12-Bit ADCs
with 3V Digital Interfac e
22
______________________________________________________________________________________
T MS 320CL3x to MAX 1202/
MAX 1203 Interfac e
Figure 19 shows an application circuit to interface the
MAX1202/MAX1203 to the TMS320 in external clock mode.
Figure 20 shows the timing diagram for this interface circuit.
Use the following steps to initiate a conversion in the
MAX1202/MAX1203 and to read the results:
1) The TMS320 should be configured with CLKX (trans-
mit clock) as an active-high output clock and CLKR
(TMS320 receive clock) as an active-high input clock.
The TMS320’s CLKX and CLKR are tied together with
the MAX1202/MAX1203’s SCLK input.
2) The MAX1202/MAX1203’s
CS
is driven low by the
TMS320’s XF_ I/O port to enable data to be clocked
into the MAX1202/MAX1203’s DIN.
3) Write an 8-bit word (1XXXXX11) to the MAX1202/
MAX1203 to initiate a conversion and place the
device into external clock mode. Refer to Table 2 to
select the proper XXXXX bit values for your specific
application.
4) The MAX1202/MAX1203’s SSTRB output is moni-
tored via the TMS320’s FSR input. A falling edge on
the SSTRB output indicates that the conversion is in
progress and data is ready to be received from the
MAX1202/MAX1203.
5) The TMS320 reads in one data bit on each of the
next 16 rising edges of SCLK. These data bits repre-
sent the 12-bit conversion result followed by four
trailing bits, which should be ignored.
6) Pull
CS
high to disable the MAX1202/MAX1203 until
the next conversion is initiated.
Figure 19. MAX1202/MAX1203-to-TMS320 Serial Interface
+5V
-5V
+3V
GND
SUPPLIES
DGND
+3V
VL
V
SS
GND
V
DD
DIGITAL
CIRCUITRY
MAX1202
MAX1203
R* = 10
*OPTIONAL
XF
CLKX
CLKR
DX
DR
FSR
CS
SCLK
DIN
DOUT
SSTRB
TMS320LC3x
MAX1202
MAX1203
Figure 18. Power-Supply Grounding Connection
Figure 20. TMS320 Serial-Interface Timing Diagram
CS
SCLK
DIN
SSTRB
DOUT
START
SEL2
SEL1
SEL0
UNI/BIP SGL/DIF
PD1
PD0
MSB
B10
B1
LSB
HIGH
IMPEDANCE
HIGH
IMPEDANCE
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1202BCAP+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 8Ch 133ksps 5V Precision ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1202BCAP+T | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 8Ch 133ksps 5V Precision ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1202BCAP-T | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1202BCPP | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1202BCPP+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 8Ch 133ksps 5V Precision ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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