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| 型号： | MAX1304ECM |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | ADC |
| 英文描述： | 8-/4-/2-Channel, 12-Bit, Simultaneous-Sampling ADCs with 【10V, 【5V, and 0 to +5V Analog Input Ranges |
| 中文描述： | 8-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP48 |
| 封装： | 7 X 7 MM, 1.40 MM HEIGHT, MS-026BBC, TQFP-48 |
| 文件页数： | 21/36页 |
| 文件大小： | 487K |
| 代理商： | MAX1304ECM |
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M
8-/4-/2-Channel,12-Bit,Simultaneous-Sampling ADCs
with ±10V, ±5V, and 0 to +5V Analog Input Ranges
______________________________________________________________________________________
21
Applications Information
Digital Interface
The bidirectional parallel digital interface allows for setting
the 8-bit configuration register (see the
Configuration
Register
section) and reading the 12-bit conversion
result. The interface includes the following control signals:
chip select (
CS
), read (
RD
), write (
WR
), end of conversion
(
EOC
), end of last conversion (
EOLC
), conversion start
(CONVST), shutdown (SHDN), channel shutdown
(
CHSHDN
), internal clock select (INTCLK/
EXTCLK
), and
external clock input (CLK). Figures 6, 7, 8, 9, Table 2, and
the
Timing Characteristics
show the operation of the inter-
face. D0–D7 are bidirectional, and D8–D11 are output
only. D0–D11 go high impedance when
RD
= 1 or
CS
= 1.
Configuration Register
Enable channels as active by writing to the configura-
tion register through I/O lines D0–D7 (Table 2). The bits
in the configuration register map directly to the chan-
nels, with D0 controlling channel zero, and D7 control-
ling channel seven. Setting any bit high activates the
corresponding input channel, while resetting any bit
low deactivates the corresponding channel. On the
devices with less than eight channels, some of the bits
have no function (Table 2).
To write to the configuration register, pull
CS
and
WR
low, load bits D0 through D7 onto the parallel bus, and
force
WR
high. The data are latched on the rising edge
of
WR
(Figure 6). Write to the configuration register at
any point during the conversion sequence. At power-
up, write to the configuration register to select the
active channels before beginning a conversion.
Table 2. Configuration Register
However, the new configuration does not take effect
until the next CONVST falling edge. At power-up all
channels default active. Shutdown does not change the
configuration register. The configuration register may
be written to in shutdown. See the
Channel Shutdown
(
CHSHDN
)
section for information about using the con-
figuration register for power saving.
BIT/CHANNEL
D3/CH3
PART
NUMBER
MAX1304
MAX1308
MAX1312
MAX1305
MAX1309
MAX1313
MAX1306
MAX1310
MAX1314
X = Don’t care (must be 1 or 0).
STATE
D0/CH0
D1/CH1
D2/CH2
D4/CH4
D5/CH5
D6/CH6
D7/CH7
ON
1
1
1
1
1
1
1
1
OFF
0
0
0
0
0
0
0
0
ON
1
1
1
1
X
X
X
X
OFF
0
0
0
0
X
X
X
X
ON
1
1
X
X
X
X
X
X
OFF
0
0
X
X
X
X
X
X
D0–D7
DATA-IN
RD
CONVST
CONFIGURATION
REGISTER UPDATES
CS
WR
t
CS
t
WRL
t
CTW
t
DTW
t
WTD
t
WTC
Figure 6. Write Timing
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1304ECM/V+ | 功能描述:模数转换器 - ADC 12-Bit 8Ch 1.075Msps 3V Precision ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX1304ECM/V+T | 功能描述:模数转换器 - ADC 12-Bit 8Ch 1.075Msps 3V Precision ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX1304ECM+ | 功能描述:模数转换器 - ADC 12-Bit 8Ch 1.075Msps 3V Precision ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX1304ECM+T | 功能描述:模数转换器 - ADC 12-Bit 8Ch 1.075Msps 3V Precision ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX1304ECM-T | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
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