TC7136ACLW713 Microchip Technology, TC7136ACLW713 Datasheet
TC7136ACLW713
Specifications of TC7136ACLW713
Available stocks
Related parts for TC7136ACLW713
TC7136ACLW713 Summary of contents
Page 1
... 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" ...
Page 2
... REF REF REF REF ANALOG ANALOG 32 COMMON COMMON BUFF BUFF INT INT 100's 100 (Backplane) (Backplane Internal Connection 44-Pin PQFP TC7136CKW TC7136ACKW 28 BP POL 40-Pin PDIP Reverse Pin Configuration 1 TC7136RCPL TC7136ARCPL 10 100 1000 POL (Minus Sign) © 2005 Microchip Technology Inc. ...
Page 3
... 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 ...
Page 4
... TC7136/TC7136A Functional Block Diagram DS21461C-page 4 © 2005 Microchip Technology Inc. ...
Page 5
... 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 ...
Page 6
... 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. ...
Page 7
... 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. ...
Page 8
... 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. ...
Page 9
... 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 ...
Page 10
... 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 ...
Page 11
... 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. ...
Page 12
... 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. ...
Page 13
... 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) ...
Page 14
... 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. ...
Page 15
... 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 ...
Page 16
... 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. ...
Page 17
... 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 ...
Page 18
... 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. ...
Page 19
... 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. ...
Page 20
... 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. ...
Page 21
... 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. ...
Page 22
... 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 ...