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参数资料
| 型号： | MAX1246EVKIT |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 5/25页 |
| 文件大小： | 0K |
| 描述： | EVALUATION KIT FOR MAX1246 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| ADC 的数量： | 1 |
| 位数： | 12 |
| 采样率（每秒）： | 133k |
| 数据接口： | 串行 |
| 输入范围： | ±VREF/2 |
| 在以下条件下的电源（标准）： | 3.6mW @ 133kSPS |
| 工作温度： | 0°C ~ 70°C |
| 已用 IC / 零件： | MAX1246 |
| 已供物品： | 板，CD |
MAX1246/MAX1247
+2.7V, Low-Power, 4-Channel,
Serial 12-Bit ADCs in QSOP-16
______________________________________________________________________________________
13
Internal Clock
In internal clock mode, the MAX1246/MAX1247 generate
their own conversion clocks internally. This frees the P
from the burden of running the SAR conversion clock
and allows the conversion results to be read back at the
processor’s convenience, at any clock rate from 0MHz
to 2MHz. SSTRB goes low at the start of the conversion
and then goes high when the conversion is complete.
SSTRB is low for a maximum of 7.5s (SHDN = FLOAT),
during which time SCLK should remain low for best
noise performance.
An internal register stores data when the conversion is
in progress. SCLK clocks the data out of this register at
any time after the conversion is complete. After SSTRB
goes high, the next falling clock edge produces the
MSB of the conversion at DOUT, followed by the
remaining bits in MSB-first format (Figure 8). CS does
not need to be held low once a conversion is started.
Pulling CS high prevents data from being clocked into
the MAX1246/MAX1247 and three-states DOUT, but it
does not adversely affect an internal clock mode
CS
SCLK
DIN
DOUT
tCSH
tCSS
tCL
tDS
tDH
tDV
tCH
tDO
tTR
tCSH
Figure 6. Detailed Serial-Interface Timing
SSTRB
CS
SCLK
DIN
DOUT
14
8
12
16
20
24
START
SEL2 SEL1 SEL0
UNI/
BIP
SGL/
DIF
PD1
PD0
B11
MSB
B10
B9
B8
B7
B6
B5
B4
B3
B2
B1
B0
LSB
ACQUISITION
(fSCLK = 2MHz)
IDLE
FILLED WITH
ZEROS
IDLE
CONVERSION
tACQ
A/D STATE
RB1
RB2
RB3
1.5
s
Figure 5. 24-Clock External Clock Mode Conversion Timing (Microwire and SPI Compatible, QSPI Compatible with fSCLK
≤ 2MHz)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1246EVL11-QSOP | 功能描述:数据转换 IC 开发工具 MAX1246 Eval Kit RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
| MAX1247ACEE | 功能描述:模数转换器 - ADC Integrated Circuits (ICs) 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 |
| MAX1247ACEE+ | 功能描述:模数转换器 - ADC 12-Bit 4Ch 133ksps 5.25V 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 |
| MAX1247ACEE+T | 功能描述:模数转换器 - ADC 12-Bit 4Ch 133ksps 5.25V 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 |
| MAX1247ACEE-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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