TC7136ACLW Microchip Technology, TC7136ACLW Datasheet

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... TC7136A CPI 40-Pin PDIP TC7136A CKW 44-Pin PQFP TC7136A CLW 44-Pin PLCC © 2005 Microchip Technology Inc. Obsolete Device TC7136/TC7136A General Description The TC7136 and TC7136A are low power, 3-1/2 digit with liquid crystal display (LCD) drivers and analog-to- digital converters. These devices incorporate an "inte- grator output zero" ...

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... TC7136/TC7136A Package Type 44-Pin PLCC TC7136CLW TC7136ACLW 40-Pin PDIP V+ 1 Normal Pin D 2 Configuration 1 TC7136CPL 1 TC7136ACPL 10 100 1000 POL (MINUS SIGN) DS21461C-page REF REF 3 TEST REF ANALOG OSC3 4 36 COMMON OSC2 OSC1 BUFF INT OSC1 40 OSC1 OSC2 39 OSC2 38 OSC3 OSC3 TEST ...

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... Typical Application 1MΩ + Analog 0.01μF Input – 0.47 180kΩ 0.15μF © 2005 Microchip Technology Inc. TC7136/TC7136A 0.1μ REF REF 31 9-19 Segment 22-25 Drive TC7136 20 TC7136A 30 POL Minus Sign 21 BP ANALOG 32 COMMON 240kΩ BUFF 36 μ REF REF ...

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... TC7136/TC7136A Functional Block Diagram DS21461C-page 4 © 2005 Microchip Technology Inc. ...

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... Average DC component is less than 50mV. 5: See "Typical Application" 48kHz oscillator increases current by 20μA (typical). Common current not included. © 2005 Microchip Technology Inc. TC7136/TC7136A *Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These ...

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... Test Conditions 250kΩ between Common and V+ 0°C ≤ T ≤ +70°C A "C" Commercial Temp. Range Devices -25°C ≤ T ≤ +85°C A "I" Industrial Temp. Range Devices 250kΩ Between Common and 0V (Note 6) IN © 2005 Microchip Technology Inc. ...

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... ANALOG COMMON 33 (8) C REF © 2005 Microchip Technology Inc. TC7136/TC7136A Description Positive supply voltage. Activates the D section of the units display. Activates the C section of the units display. Activates the B section of the units display. Activates the A section of the units display. Activates the F section of the units display. ...

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... Pins 40, 39 and 38 make up the oscillator section. For a 48kHz clock (3 readings per second), connect Pin 40 to the junction of a 180kΩ resistor and a 50pF capacitor. The 180kΩ resistor is tied to Pin 39 and the 50pF capacitor is tied to Pin 38. © 2005 Microchip Technology Inc. ...

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... RC Where Reference voltage Signal integration time (fixed Reference voltage integration time RI (variable) For a constant EQUATION 3- ------- - © 2005 Microchip Technology Inc. TC7136/TC7136A FIGURE 3-1: Analog Input Signal REF Voltage Polarity Control ). Fixed Variable RI Signal Reference Integrate Integrate Time Time FIGURE 3- 0.1/t ...

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... V IN 1000 = ---------------- V REF FIGURE 4-1: CONVERSION TIMING DURING NORMAL OPERATION 1000 INT 1-2000 DENT 11-140 ZI AZ 910-2900 4000 FIGURE 4-2: CONVERSION TIMING DURING OVER RANGE OPERATION 1000 INT 2001-2090 DEINT 31-640 ZI AZ 300-910 4000 © 2005 Microchip Technology Inc. - should be IN ...

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... The oscillator frequency is divided by 4 prior to clocking the internal decade counters. The four-phase mea- surement cycle takes a total of 4000 counts, or 16,000 clock pulses. The 4000 count cycle is independent of input signal magnitude. © 2005 Microchip Technology Inc. TC7136/TC7136A Each phase of the measurement cycle has the following length: 1. ...

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... V between V + and analog common selected from the OSC 0. OSC RC is ÷ generate the TC7136A's inter- by 800. V REF 100mV REF REF 400mV. Rather is not equal to zero. This is common IN -. The transducer output is connected IN © 2005 Microchip Technology Inc. ...

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... Integration capacitor Integration resistor I © 2005 Microchip Technology Inc. TC7136/TC7136A V+ – 1V. Common mode voltages are removed from the system when the TC7136A operates from a battery or floating power source (isolated from measured system), Common mode voltage removed in battery operation with V is connected to analog common (V Figure 7-1) ...

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... TEST may + Set V AZ ANALOG COMMON TEMPERATURE COEFFICIENT No Maximum Maximum Specified Typical Maximum Typical Typical TC7136A TC7136 ICL7136 TC7136A INTERNAL VOLTAGE REFERENCE CONNECTION 240kΩ TC7136 TC7136A 10kΩ REF V REF REF 32 ANALOG COMMON = 1/2 V REF REF © 2005 Microchip Technology Inc. ...

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... In ratio- metric operation, an unknown resistance is measured with respect to a known standard resistance. No accurately defined reference voltage is needed. © 2005 Microchip Technology Inc. TC7136/TC7136A The unknown resistance is put in series with a known standard and a current passed through the pair. The ...

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... V REF 50kΩ V REF COMMON DS21461C-page 16 FIGURE 8-4: 5.6kΩ 1N4148 LCD 0.7%/°C R PTC + 9V V- TC7136 TC7136A + - POSITIVE TEMPERATURE COEFFICIENT RESISTOR TEMPERATURE SENSOR + 9V 160kΩ 20kΩ TC7136 TC7136A REF 20kΩ REF COMMON © 2005 Microchip Technology Inc. ...

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... Component Taping Orientation for 44-Pin PLCC Devices PIN 1 Carrier Tape, Number of Components Per Reel and Reel Size Package 44-Pin PLCC Note: Drawing does not represent total number of pins. © 2005 Microchip Technology Inc. TC7136/TC7136A User Direction of Feed PIN 1 P Standard Reel Component Orientation ...

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... User Direction of Feed P Standard Reel Component Orientation for TR Suffix Device Pitch (P) Part Per Full Reel 24 mm .610 (15.49) .590 (14.99) 3° MIN. .700 (17.78) .610 (15.50) Dimensions: inches (mm) W Reel Size 500 13 in Dimensions: inches (mm) © 2005 Microchip Technology Inc. ...

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... PQFP PIN 1 .018 (0.45) .012 (0.30) .031 (0.80) TYP. .398 (10.10) .390 (9.90) .557 (14.15) .537 (13.65) © 2005 Microchip Technology Inc. TC7136/TC7136A 7° MAX. .009 (0.23) .005 (0.13) .398 (10.10) .390 (9.90) .557 (14.15) .537 (13.65) .096 (2.45) MAX. ...

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... The Microchip Worldwide Site (www.microchip.com) Please specify which device, revision of silicon and Data Sheet (include Literature #) you are using. New Customer Notification System Register on our web site (www.microchip.com/cn) to receive the most current information on our products. DS21461C-page 20 © 2005 Microchip Technology Inc. ...

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... PowerMate, PowerTool, rfLAB, rfPICDEM, Select Mode, Smart Serial, SmartTel, Total Endurance and WiperLock are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. ...

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... Fax: 886-3-572-6459 Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 © 2005 Microchip Technology Inc. EUROPE Austria - Wels Tel: 43-7242-2244-399 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 France - Paris Tel: 33-1-69-53-63-20 ...