參數(shù)資料
型號(hào)： MAX1111
廠商： Maxim Integrated Products, Inc.
英文描述： +2.7V, Low-Power, Multichannel, Serial 8-Bit ADCs
中文描述： +2.7V、低功耗、多通道、串行8位ADC
文件頁(yè)數(shù)： 12/20頁(yè)
文件大?。?/td> 284K
代理商： MAX1111
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.
M
+2.7V, Low-Power, Multic hannel,
S erial 8-Bit ADCs
12
______________________________________________________________________________________
SSTRB
CS
SCLK
DIN
DOUT
1
4
8
12
16
20
24
START
SEL2 SEL1 SEL0
UNI/
BIP
DIF
PD1
PD0
B7
B6
B5
B4
B3
B2
B1
B0
ACQUISITION
4
μ
s
(f
SCLK
= 500kHz)
IDLE
FILLED WITH ZEROS
IDLE
CONVERSION
t
ACQ
A/D STATE
RB1
RB2
RB3
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
相關(guān)PDF資料
PDF描述
MAX1111CEE +2.7V, Low-Power, Multichannel, Serial 8-Bit ADCs
MAX1111EEE +2.7V, Low-Power, Multichannel, Serial 8-Bit ADCs
MAX1111EPE +2.7V, Low-Power, Multichannel, Serial 8-Bit ADCs
MAX1111MJE +2.7V, Low-Power, Multichannel, Serial 8-Bit ADCs
MAX1115 Single-Supply, Low-Power, Serial 8-Bit ADCs
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX11110 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:2Msps/3Msps, Low-Power, Serial 12-/10-/8-Bit ADCs
MAX11110AUT+ 制造商:Maxim Integrated Products 功能描述:SMALL, 2.2V TO 3.6V, LOW-POWER, 1-/2-CHANNEL, SERIAL, 8-/10- - Rail/Tube
MAX11110AUT+T 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10Bit 1Ch 2Msps Serial 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
MAX11111 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:2Msps/3Msps, Low-Power, Serial 12-/10-/8-Bit ADCs
MAX11111ATB+ 制造商:Maxim Integrated Products 功能描述:SMALL, 2.2V TO 3.6V, LOW-POWER, 1-/2-CHANNEL, SERIAL, 8-/10- - Rail/Tube
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