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参数资料
| 型号： | MAX11635EVKIT+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/24页 |
| 文件大小： | 0K |
| 描述： | KIT EVAL FOR 12-BIT ADCS 4-CH |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 系列： | * |
MAX11634–MAX11637
12-Bit, 300ksps ADCs with Differential
Track/Hold, and Internal Reference
14
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Applications Information
Register Descriptions
The MAX11634–MAX11637 communicate between the
internal registers and the external circuitry through the
SPI/QSPI-compatible serial interface. Table 1 details
the registers and the bit names. Tables 2–7 show the
various functions within the conversion register, setup
register, averaging register, reset register, unipolar reg-
ister, and bipolar register.
Conversion Time Calculations
The conversion time for each scan is based on a num-
ber of different factors: conversion time per sample,
samples per result, results per scan, and if the external
reference is in use.
Use the following formula to calculate the total conver-
sion time for an internally timed conversion in clock
modes 00 and 10 (see the
Electrical Characteristics
table as applicable):
Total Conversion Time = tCNV x nAVG x nRESULT + tRP
where:
tCNV = tACQ(MAX) + tCONV(MAX)
nAVG = samples per result (amount of averaging)
nRESULT = number of FIFO results requested; deter-
mined by number of channels being scanned or by
NSCAN1, NSCAN0
tRP = internal reference wake up; set to zero if internal
reference is already powered up or external reference
is being used
In clock mode 01, the total conversion time depends on
how long CNVST is held low or high, including any time
required to turn on the internal reference. Conversion
time in externally clocked mode (CKSEL1, CKSEL0 = 11)
depends on the SCLK period and how long CS is held
high between each set of eight SCLK cycles. In clock
mode 01, the total conversion time does not include the
time required to turn on the internal reference.
Conversion Register
Select active analog input channels and scan modes
by writing to the conversion register. Table 2 details
channel selection, the four scan modes, and how to
request a temperature measurement. Request a scan
by writing to the conversion register when in clock
mode 10 or 11, or by applying a low pulse to the
CNVST pin when in clock mode 00 or 01.
A conversion is not performed if it is requested on a
channel that has been configured as CNVST or REF-.
Do not request conversions on channels 4–7 on the
MAX11634/MAX11635. Set CHSEL[2:0] to the lower
channel’s binary values. If the last two channels are
configured as a differential pair and one of them has
been reconfigured as CNVST or REF-, the pair is
ignored.
Select scan mode 00 or 01 to return one result per
single-ended channel and one result per differential
pair within the requested range. Select scan mode 10
to scan a single input channel numerous times,
depending on NSCAN1 and NSCAN0 in the averag-
ing register (Table 6). Select scan mode 11 to return
only one result from a single channel.
REGISTER NAME
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
Conversion
1
X
CHSEL2
CHSEL1
CHSEL0
SCAN1
SCAN0
X
Setup
0
1
CKSEL1
CKSEL0
REFSEL1
REFSEL0
DIFFSEL1
DIFFSEL0
Averaging
0
1
AVGON
NAVG1
NAVG0
NSCAN1
NSCAN0
Reset
0
1
RESET
X
Unipolar Mode (Setup)
UCH0/1
UCH2/3
UCH4/5
UCH6/7
X
Bipolar Mode (Setup)
BCH0/1
BCH1/2
BCH4/5
BCH6/7
X
Table 1. Input Data Byte (MSB First)
X
= Don’t care.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX11635EVKIT+ | 功能描述:数据转换 IC 开发工具 MAX11635 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 |
| MAX11635EVSYS# | 功能描述:数据转换 IC 开发工具 MAX11635 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 |
| MAX11636 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:12-Bit, 300ksps ADCs with Differential |
| MAX11636EEE+ | 功能描述:模数转换器 - ADC 8Ch 12-Bit 300ksps w/FIFO & Int Ref 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 |
| MAX11636EEE+T | 功能描述:模数转换器 - ADC 8Ch 12-Bit 300ksps w/FIFO & Int Ref 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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