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参数资料
| 型号： | MAX1267 |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | 265ksps. +3V. 6-/2-Channel. 12-Bit ADCs with +2.5V Reference and Parallel Interface |
| 中文描述： | 265ksps、+3V、6/2通道、12位ADC，带有+2.5V电压基准及并行接口 |
| 文件页数： | 8/19页 |
| 文件大小： | 307K |
| 代理商： | MAX1267 |
M
265ksps, +3V, 6-/2-Channel, 12-Bit ADCs
with +2.5V Reference and Parallel Interface
8
_______________________________________________________________________________________
Pin Description (continued)
PIN
MAX1267
REF
21
25
MAX1265
NAME
Bandgap Reference Buffer Output/External Reference Input. Add a 4.7μF capacitor
to GND when using the internal reference.
FUNCTION
26
22
V
DD
Analog +2.7V to +3.6V Power Supply. Bypass with a 0.1μF capacitor to GND.
27
23
D11
Tri-State Digital Output (D11)
28
24
D10
Tri-State Digital Output (D10)
________________Detailed Description
Converter Operation
The MAX1265/MAX1267 ADCs use a successive-
approximation (SAR) conversion technique and an input
track/hold (T/H) stage to convert an analog input signal
to a 12-bit digital output. This output format provides an
easy interface to standard microprocessors (μPs). Figure
2 shows the simplified internal architecture of the
MAX1265/MAX1267.
Single-Ended and
Pseudo-Differential Operation
The sampling architecture of the ADC’s analog com-
parator is illustrated in the equivalent input circuit in
Figure 3. In single-ended mode, IN+ is internally
switched to channels CH0–CH5 for the MAX1265
(Figure 3a) and to CH0–CH1 for the MAX1267 (Figure
3b), while IN- is switched to COM (Table 2). In differen-
tial mode, IN+ and IN- are selected from analog input
pairs (Table 3) and are internally switched to either of
T/H
TRI-STATE, BIDIRECTIONAL
I/O INTERFACE
12
17k
12
SUCCESSIVE-
APPROXIMATION
REGISTER
CHARGE REDISTRIBUTION
12-BIT DAC
CLOCK
ANALOG
INPUT
MULTIPLEXER
CONTROL LOGIC
AND
LATCHES
REF
REFADJ
1.22V
REFERENCE
D0–D11
12-BIT DATA BUS
(CH5)
(CH4)
(CH3)
(CH2)
CH1
CH0
COM
CLK
CS
WR
RD
INT
( ) ARE FOR MAX1265 ONLY.
V
DD
GND
MAX1265
MAX1267
A
=
2.05
COMP
Figure 2. Simplified Functional Diagram of 6-/2-Channel MAX1265/MAX1267
相关PDF资料 |
PDF描述 |
|---|---|
| MAX1267AEEG | 265ksps, +3V, 6-/2-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface |
| MAX1267BCEG | 265ksps, +3V, 6-/2-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface |
| MAX1265BCEI | 265ksps, +3V, 6-/2-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface |
| MAX1265BEEI | 265ksps, +3V, 6-/2-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface |
| MAX1265-MAX1267 | 265ksps, +3V, 6-/2-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1267ACEG | 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 |
| MAX1267ACEG+ | 功能描述:模数转换器 - ADC 12-Bit 2Ch 265ksps 3.6V 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 |
| MAX1267ACEG+T | 功能描述:模数转换器 - ADC 12-Bit 2Ch 265ksps 3.6V 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 |
| MAX1267ACEG-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 |
| MAX1267AEEG | 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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