參數(shù)資料
型號(hào)： TC820CKW
元件分類： ADC
英文描述： 1-CH DUAL-SLOPE ADC, PQFP44
封裝： PLASTIC, FP-44
文件頁(yè)數(shù)： 4/24頁(yè)
文件大?。?/td> 185K
代理商： TC820CKW
12
3-3/4 A/D Converter with Frequency
Counter and Logic Probe
TC820
TC820-10 10/17/96
2001 Microchip Technology Inc.
DS21476A
In systems where common-mode voltages exist, the
86dB common-mode rejection ratio minimizes error. Com-
mon-mode voltages do, however, affect the integrator out-
put level. A worst-case condition exists if a large, positive
VCM exists in conjunction with a full-scale, negative differ-
ential signal. The negative signal drives the integrator out-
put positive along with VCM (Figure 9). For such applica-
tions, the integrator output swing can be reduced below the
recommended 2V full-scale swing. The integrator output
will swing within 0.3V of VDD or VDD without increased
linearity error.
Reference (VDD, VSS)
The TC820 reference, like the analog signal input, has
true differential inputs. In addition, the reference voltage
can be generated anywhere within the power supply volt-
age of the converter. The differential reference inputs per-
mit ratiometric measurements and simplify interfacing with
sensors, such as load cells and temperature sensors.
DP3
DP2
DP1
0Hz – 3999Hz
4kHz – 39.99kHz
40kHz – 399.9kHz
400kHz
≥
DP3
DP2
DP1
NONE
DECIMAL POINT
fIN
Figure 5. TC820 Auto-Range Decimal Point Selection
vs. Frequency Counter Input
HIGH
LOW
LCD
DRIVERS
DISABLE A/D CONVERTER
TO
BUZZER
DP0/LO
DP1/HI
LOGIC
CMOS
LOGIC
LEVELS
EXTERNAL
LOGIC LEVEL
DETECTION
AND PULSE
STRETCHING
VDD
TC820
LOGIC
PROBE
INPUT
NC
LCD
Figure 6. Logic Probe Simplified Schematic
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TC820CKW713 功能描述:LCD 驅(qū)動(dòng)器 3-3/4 A/D Converter RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
TC820CLW 功能描述:LCD 驅(qū)動(dòng)器 3-3/4 A/D Converter RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
TC820CLW713 功能描述:LCD 驅(qū)動(dòng)器 3-3/4 A/D Converter RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
TC820CPL 功能描述:LCD 驅(qū)動(dòng)器 3-3/4 A/D Converter RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
TC8-20S2405R 制造商:TRUMPOWER 制造商全稱:Tumbler Technologies + TRUMPower 功能描述:DC/DC CONVERTERS 2:1 Input, 12.5 to 20 Watt
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