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参数资料
| 型号： | MAX1110EAP |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | ADC |
| 英文描述： | +2.7V, Low-Power, Multichannel, Serial 8-Bit ADCs |
| 中文描述： | 8-CH 8-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20 |
| 封装： | SSOP-20 |
| 文件页数： | 4/20页 |
| 文件大小： | 284K |
| 代理商： | MAX1110EAP |
Simple Software Interface
Make sure the CPU’s serial interface runs in master
mode so the CPU generates the serial clock. Choose a
clock frequency from 50kHz to 500kHz.
1) Set up the control byte for external clock mode and
call it TB1. TB1 should be of the format 1XXXXX11
binary, where the Xs denote the particular channel
and conversion mode selected.
2) Use a general-purpose I/O line on the CPU to pull
CS low.
3) Transmit TB1 and, simultaneously, receive a byte
and call it RB1. Ignore RB1.
4) Transmit a byte of all zeros ($00 hex) and, simulta-
neously, receive byte RB2.
5) Transmit a byte of all zeros ($00 hex) and, simulta-
neously, receive byte RB3.
6) Pull CS high.
Figure 7 shows the timing for this sequence. Bytes RB2
and RB3 contain the result of the conversion padded
with two leading zeros and six trailing zeros. The total
conversion time is a function of the serial-clock
frequency and the amount of idle time between 8-bit
transfers. Make sure that the total conversion time does
not exceed 1ms, to avoid excessive T/H droop.
Digital Inputs
CS, SCLK, and DIN can accept input signals up to
5.5V, regardless of the supply voltages. This allows the
MAX1110/MAX1111 to accept digital inputs from both
3V and 5V systems.
MAX1110/MAX1111
+2.7V, Low-Power, Multichannel,
Serial 8-Bit ADCs
12
______________________________________________________________________________________
SSTRB
CS
SCLK
DIN
DOUT
14
8
12
16
20
24
START
SEL2 SEL1 SEL0
UNI/
BIP
SGL/
DIF
PD1
PD0
B7
B6
B5
B4
B3
B2
B1
B0
ACQUISITION
(fSCLK = 500kHz)
IDLE
FILLED WITH ZEROS
IDLE
CONVERSION
tACQ
A/D STATE
RB1
RB2
RB3
4
s
Figure 7. Single-Conversion Timing, External Clock Mode, 24 Clocks
CS
SCLK
DOUT
I/O
SCK
MISO
+3V
SS
a) SPI
CS
SCLK
DOUT
CS
SCK
MISO
+3V
SS
b) QSPI
MAX1110
MAX1111
MAX1110
MAX1111
MAX1110
MAX1111
CS
SCLK
DOUT
I/O
SK
SI
c) MICROWIRE
Figure 6. Common Serial-Interface Connections to the
MAX1110/MAX1111
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1110EAP+ | 功能描述:模数转换器 - ADC 2.7V Low-Power Multi Ch Serial 8-Bit 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 |
| MAX1110EAP+T | 功能描述:模数转换器 - ADC 2.7V Low-Power Multi Ch Serial 8-Bit 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 |
| MAX1110EAP-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 |
| MAX1110EPP | 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 |
| MAX1110EPP+ | 功能描述:模数转换器 - ADC 2.7V Low-Power Multi Ch Serial 8-Bit 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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