参数资料
型号: MAX1368ECM+T
厂商: Maxim Integrated
文件页数: 21/36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)
Microcontroller-Interface, 4.5-/3.5-Digit Panel
Meters with 4–20mA Output
UNIPOLAR:
1.25
0
UNIPOLAR:
BIPLOLAR:
16
8
0
CURRENT
OFFSET
DISABLED
(EN_I = 0)
BIPLOLAR:
- FS
FS = FULL SCALE
0
ADC OUTPUT CODE
+ FS
- FS
FS = FULL SCALE
0
ADC OUTPUT CODE
+ FS
Figure 20. DAC Output Voltage vs. ADC Output Code
Figure 22. Output Current (4-20OUT) vs. ADC Output Code
(Current Offset Disabled)
20
CURRENT
OFFSET
ENABLED
(EN_I = 1)
UNIPOLAR:
BIPLOLAR:
20
OFFSET ENABLED:
OFFSET DISABLED:
16
12
4
4
0
- FS
0
ADC OUTPUT CODE
+ FS
0
0
1. 25
FS = FULL SCALE
Figure 21. Output Current (4-20OUT) vs. ADC Output Code
(Current Offset Enabled)
Leading-Zero Suppression
The MAX1366/MAX1368 include a leading-zero sup-
pression circuitry to turn off unnecessary zeros. For
example, when DPSET1 and DPSET2 = [0,0], 0.0 is dis-
played instead of 000.0 (MAX1366). This feature saves
a substantial amount of power by not lighting unneces-
sary LEDs.
V/I CONVERTER INPUT ( V )
Figure 23. 4-20OUT Output Current vs. V/I Converter Input
Voltage
Interdigit Blanking
The MAX1366/MAX1368 also include interdigit-blanking
circuitry. Without this feature, it is possible to see a faint
digit next to a digit that is completely on. The
interdigit-blanking circuitry prevents ghosting over into
the next digit for a short period of time. The typical
interdigit blanking time is 4μs.
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