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参数资料
| 型号： | MAX1028BCEP+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/22页 |
| 文件大小： | 0K |
| 描述： | IC ADC 10-BIT 300KSPS 20-QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 位数： | 10 |
| 采样率（每秒）： | 300k |
| 数据接口： | MICROWIRE?，QSPI?，串行，SPI? |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 727mW |
| 电压电源： | 单电源 |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 20-QSOP |
| 包装： | 管件 |
| 输入数目和类型： | 12 个单端，单极；12 个单端，双极；6 个差分，单极；6 个差分，双极 |
| 产品目录页面： | 1395 (CN2011-ZH PDF) |
MAX1026/MAX1028/MAX1030
10-Bit 300ksps ADCs with FIFO,
Temp Sensor, Internal Reference
12
______________________________________________________________________________________
Applications Information
Register Descriptions
The MAX1026/MAX1028/MAX1030 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 regis-
ter, setup register, averaging register, reset register,
unipolar register, 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, if a temperature
measurement is requested, and if the external refer-
ence 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
section as applicable):
total conversion time = tcnv x navg x nresult + tTS + tRP
where:
tcnv = tacq(max) + tconv(max)
navg = samples per result (amount of averaging)
nresult = number of FIFO results requested; determined
by number of channels being scanned or by NSCAN1,
NSCAN0
tTS = time required for temperature measurement; set
to zero if temp measurement is not requested
tRP = internal reference wake-up; set to zero if the inter-
nal reference is already powered up or if the 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.
Conversion Register
Select active analog input channels, scan modes, and
a single temperature measurement per scan 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 8–15 on the
MAX1026 and channels 12–15 on the MAX1028. Set
CHSEL3:CHSEL0 to the lower channel’s binary value. 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 sin-
gle-ended channel and one result per differential pair
within the requested range, plus one temperature result if
selected. Select scan mode 10 to scan a single input
channel numerous times, depending on NSCAN1 and
NSCAN0 in the averaging 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
CHSEL3
CHSEL2
CHSEL1
CHSEL0
SCAN1
SCAN0
TEMP
Setup
0
1
CKSEL1
CKSEL0
REFSEL1
REFSEL0
DIFFSEL1
DIFFSEL0
Averaging
0
1
AVGON
NAVG1
NAVG0
NSCAN1
NSCAN0
Reset
0
1
RESET
XX
X
Unipolar mode (setup)
UCH0/1
UCH2/3
UCH4/5
UCH6/7
UCH8/9*
UCH10/11*
UCH12/13**
UCH14/15**
Bipolar mode (setup)
BCH0/1
BCH1/2
BCH4/5
BCH6/7
BCH8/9*
BCH10/11*
BCH12/13**
BCH14/15**
Table 1. Input Data Byte (MSB First)
*
Unipolar/bipolar channels 8–15 are only valid on the MAX1028 and MAX1030.
**
Unipolar/bipolar channels 12–15 are only valid on the MAX1030.
X = Don’t care.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1028BCEP+ | 功能描述:模数转换器 - ADC 10Bit 300ksps w/FIFO Temp Sensor 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 |
| MAX1028BCEP+T | 功能描述:模数转换器 - ADC 10Bit 300ksps w/FIFO Temp Sensor 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 |
| MAX1028BCEPT | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:10-Bit 300ksps ADCs with FIFO, Temp Sensor, Internal Reference |
| MAX1028BCEP-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 |
| MAX1028BEEP | 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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