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参数资料
| 型号： | MAX1368ECM+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 12/36页 |
| 文件大小： | 0K |
| 描述： | IC PANEL METER 3.5 DIG 48LQFP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,000 |
| 显示器类型： | LED |
| 配置： | 7 段显示 |
| 接口： | 串行 |
| 数字或字符： | A/D，3.5 位数字 |
| 电源电压： | 2.7 V ~ 5.25 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 48-LQFP |
| 供应商设备封装： | 48-LQFP（7x7） |
| 包装： | 带卷 (TR) |
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Microcontroller-Interface, 4.5-/3.5-Digit Panel
Meters with 4–20mA Output
Functional Diagram
AV DD
DV DD
CLK SCLK DIN DOUT CS
CS_DAC
EOC
DACDATA_SEL
SET
LEDV
+2.5V
SERIAL I/O AND CONTROL
SEGA
AIN+
AIN-
INPUT
BUFFER
ADC
DISPLAY REGISTER
ADC REGISTER
DAC REGISTER
LED
DRIVER
SEGG
DIG0(1)
DIG4(4)
LED_EN
REF+
LEDG
DAC_VDD
REF-
CS_DAC DIN
SCLK
DACVOUT
CONV_IN
CURRENT
-2.5V
2.048V
BANDGAP
OUTPUT
DAC
V/I
CONVERTER
SUMMER
AND
AMPLIFIER
4-20OUT
REFERENCE
NEGV
CHARGE
PUMP
-2.5V
DAC REF
BUFFER
OFFSET
GENERATOR
EN_I
EN_BPM
5V REGULATOR
MAX1366
(MAX1368)
GND
REFSELE REF_DAC REG_AMP CMP REG_FORCE REG_VDD
Detailed Description
The MAX1366/MAX1368 low-power, highly integrated
ADCs with LED drivers convert a ±2V differential input
voltage (one count is equal to 100μV for the MAX1366
and 1mV for the MAX1368) with a sigma-delta ADC and
output the result to an LED display. An additional
±200mV input range (one count is equal to 10μV for the
MAX1366 and 100μV for the MAX1368) is available to
measure small signals with finer resolution.
In addition to displaying the results on an LED display,
these devices feature a DAC and V-to-I converter for
4–20mA (or 0 to 16mA) current output that proportional-
ly follows the ADC input. The MAX1366/MAX1368 use
an external depletion-mode nMOS transistor to regulate
7V to 30V for the V/I converter. Use the 4–20mA (or 0 to
16mA) output to drive a remote display, data logger,
PLC input, or other 4–20mA devices in a current loop.
The MAX1366/MAX1368 interface with a μC using an
SPI-/QSPI-/MICROWIRE-compatible serial interface.
For added flexibility, the MAX1366/MAX1368 allow
direct access to the ADC register, LED display register,
and DAC output register using the SPI interface.
The MAX1366/MAX1368 include a 2.048V reference,
internal charge pump, and a high-accuracy on-chip
oscillator. The devices feature on-chip buffers for the dif-
ferential input signal and external-reference inputs,
allowing direct interface with high-impedance signal
sources. In addition, they use continuous internal offset
calibration and offer > 100dB of 50Hz and 60Hz line-
noise rejection. Other features include data hold and
peak detection and overrange/underrange detection.
Analog Input Protection
The MAX1366/MAX1368 provide internal protection
diodes that limit the analog input range on AIN+, AIN-,
REF+, and REF- from NEGV to (AV DD + 0.3V). If the
analog input exceeds this range, limit the input current
to 10mA.
12
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX136C/D | 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 |
| MAX136CJL | 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 |
| MAX136CMH | 制造商:Maxim Integrated Products 功能描述:44 PINS MQFP PKG - Bulk 制造商:Rochester Electronics LLC 功能描述: |
| MAX136CMH+ | 制造商:Maxim Integrated Products 功能描述:ADC SGL DUAL SLOPE 3 1/2DIGIT LCD 44MQFP - Rail/Tube |
| MAX136CMH+D | 功能描述:模数转换器 - ADC Low-Pwr 3 1/2 Digit ADC 2.5sps 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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