tc7107a Microchip Technology Inc., tc7107a Datasheet

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... Microchip Technology Inc. TC7106/A/TC7107/A General Description: The TC7106A and TC7107A 3-1/2 digit direct display drive Analog-to-Digital Converters allow existing 7106/ 7107 based systems to be upgraded. Each device has a precision reference with a 20ppm/°C max tempera- ture coefficient. This represents times improve- ment over similar 3-1/2 digit converters ...

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... 1000 POL (Minus Sign) 44-Pin PQFP TC7106ACKW BP/GND 28 TC7107ACKW 27 POL © 2006 Microchip Technology Inc. ...

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... Typical Application 1MΩ + Analog 0.01μF Input – 47kΩ 0.22μF © 2006 Microchip Technology Inc. TC7106/A/TC7107/A 0.1μF LCD Display (TC7106/A) or Common Node w/ LED REF REF 31 Segment Drive POL IN Minus Sign 21 BP ANALOG 32 1 COMMON ...

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... PQFP ...........................................1.00W Operating Temperature Range: C (Commercial) Devices .............. 0°C to +70°C I (Industrial) Devices ................-25°C to +85°C Storage Temperature Range ..............-65°C to +150°C TC7107A Supply Voltage (V+) ...............................................+6V Supply Voltage (V-)..................................................-9V Analog Input Voltage (either Input) (Note 1) ... Reference Input Voltage (either Input) ............ Clock Input ..................................................GND to V+ ≤ ...

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... Backplane Drive Voltage TC7107A ONLY Segment Sinking Current (Except Pin 19) TC7107A ONLY Segment Sinking Current (Pin 19) Note 1: Input voltages may exceed the supply voltages, provided the input current is limited to ±100μA. 2: Dissipation rating assumes device is mounted with all leads soldered to printed circuit board. ...

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... Activates the E section of the hundreds display. Activates both halves of the 1 in the thousands display. Activates the negative polarity display. LCD Backplane drive output (TC7106A). Digital Ground (TC7107A). Activates the G section of the hundreds display. Activates the A section of the hundreds display. Activates the C section of the hundreds display. ...

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... OSC2 40 (1) OSC1 © 2006 Microchip Technology Inc. TC7106/A/TC7107/A Description The analog input required to generate a full scale output (1999 counts). Place 100mV between Pins 35 and 36 for 199.9mV full scale. Place 1V between Pins 35 and 36 for 2V full scale. See paragraph on Reference Voltage. ...

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... DETAILED DESCRIPTION (All Pin designations refer to 40-Pin PDIP.) 3.1 Dual Slope Conversion Principles The TC7106A and TC7107A are dual slope, integrating Analog-to-Digital Converters. An understanding of the dual slope conversion technique will aid in following the detailed operation theory. The conventional dual slope converter measurement cycle has two distinct phases: • ...

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... connected across the previously charged IN © 2006 Microchip Technology Inc. TC7106/A/TC7107/A reference capacitor. Circuitry within the chip ensures that the capacitor will be connected with the correct polarity to cause the integrator output to return to zero. ...

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... TC7106/A/TC7107/A FIGURE 5-2: TC7106A Block Diagram DS21455C-page 10 © 2006 Microchip Technology Inc. ...

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... DIGITAL SECTION (TC7107A) Figure 6-2 shows a TC7107A block diagram designed to drive common anode LEDs identical to the TC7106A, except that the regulated supply and backplane drive have been eliminated and the segment drive is typically 8mA. The 1000’s output (Pin 19) sinks current from two LED segments, and has a 16mA drive capability ...

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... TC7106/A/TC7107/A FIGURE 6-2: TC7107A Block Diagram DS21455C-page 12 © 2006 Microchip Technology Inc. ...

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... INT rollover error. A polypropylene recommended. © 2006 Microchip Technology Inc. TC7106/A/TC7107/A 7.4 Integrating Resistor (R The input buffer amplifier and integrator are designed with class A output stages. The output stage idling ) current is 100μA. The integrator and buffer can supply AZ 20μ ...

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... In applications where an externally generated reference voltage is desired, refer to Figure 7-1. DS21455C-page Rather V + REF V - REF TC7106A TC7107A is not equal The trans- IN (a) + and analog IN FIGURE 7- 6.8V 6.8kΩ Zener TC7106A 20kΩ TC7107A REF 1. REF Ref Common (b) External Reference © 2006 Microchip Technology Inc. ...

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... The typical range – 1 1V. Common mode voltages are removed from the system when the TC7106A/ TC7107A operates from a battery or floating power source (isolated from measured system) and V connected to analog common (V ) (see Figure 8-2). COM In systems where Common mode voltages exist, the 86dB Common mode rejection ratio minimizes error ...

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... OSC3 OSC2 Analog REF REF V+ V- Common + 9V do not need to be changed. Figure 8-4 shows analog common supplying the necessary voltage reference for the TC7106A/TC7107A. 200 180 No Maximum Specified 160 140 120 100 Maximum 80 Limit Voltage 60 Typical 7106A 0 FIGURE 8-3: ...

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... Figure 9 curve tracer display showing the rela- tionship between output current and output voltage for a typical TC7107CPL. Since a typical LED has 1.8 volts across it at 7mA, and its common anode is connected 1N914 to +5V, the TC7107A output is at 3.2V (point μF – Figure 9-3). Maximum power dissipation is 8.1mA x 3 ...

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... TP3 1kΩ 0.47 μF 100 0.22 0.01 μ μF TP5 TP2 0.1 Display 100 μF 47 kΩ TP1 kΩ TC7107A 1 10 Display 5.1Ω 1/4W 1N4001 FIGURE 9-4: Diode or Resistor Limits Package Power Dissipation DS21455C-page 18 150Ω © 2006 Microchip Technology Inc. ...

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... Contact LCD manufacturer for full product listing and specifications. 10.2 Light Emitting Diode Display Sources Several LED manufacturers supply seven segment digits with and without decimal point annunciators for the TC7107A. Manufacturer Address/Phone Hewlett-Packard 640 Page Mill Rd. Components Palo Alto, CA 94304 AND 720 Palomar Ave ...

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... REF Common FIGURE 10-4: Positive Temperature Coefficient Resistor Temperature Sensor DS21455C-page 20 To Pin 1 TC7106A 9V V- FIGURE 10-5: Reference: 200mV Full Scale, 3 Readings-Per- Second (RPS Pin 1 TC7107A + FIGURE 10-6: 200mV Full Scale, 3RPS Single Ended Inputs Set V = 100mV REF 40 100kΩ ...

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... Recommended Component Values for 2.00V Full Scale © 2006 Microchip Technology Inc. TC7106/A/TC7107/A To PIn Logic TC7107A Note: An external reference must be used in this application. FIGURE 10-9: Single +5V Supply = 1V 24kΩ ...

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... OUT 1.86V @ 25°C 50kΩ 1. TC7106A REF REF 32 Analog Common 0.01 μ SEG DRIVE LCD Display REF TC7106A V - REF V = 2.00V Common V- 26 © 2006 Microchip Technology Inc. ...

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... Component Taping Orientation for 44-Pin PQFP Devices Carrier Tape, Number of Components Per Reel and Reel Size Package 44-Pin PQFP Note: Drawing does not represent total number of pins. © 2006 Microchip Technology Inc. TC7106/A/TC7107/A User Direction of Feed P Standard Reel Component Orientation ...

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... Pin 1 .540 (13.72) .510 (12.95) .030 (0.76) Min. .060 (1.52) .020 (0.51) .015 (0.38) .008 (0.20) .150 (3.81) Min. .020 (0.51) .016 (0.41) .610 (15.49) .590 (14.99) 3° Min. .700 (17.78) .610 (15.50) Dimensions: inches (mm) .620 (15.75) .590 (15.00) 3° Min. .700 (17.78) .620 (15.75) Dimensions: inches (mm) © 2006 Microchip Technology Inc. ...

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... PLCC 32 mm Note: Drawing does not represent total number of pins. 44-Pin 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) © 2006 Microchip Technology Inc. TC7106/A/TC7107 Pitch (P) Part Per Full Reel 24 mm 500 7° Max. .009 (0.23) .005 (0.13) .398 (10.10) ...

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... TC7106/A/TC7107/A NOTES: DS21455C-page 26 © 2006 Microchip Technology Inc. ...

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... To register, access the Microchip web site at www.microchip.com, click on Customer Change Notification and follow the registration instructions. © 2006 Microchip Technology Inc. TC7106/A/TC7107/A CUSTOMER SUPPORT Users of Microchip products can receive assistance through several channels: • ...

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... What deletions from the document could be made without affecting the overall usefulness there any incorrect or misleading information (what and where)? 7. How would you improve this document? DS21455C-page 28 Total Pages Sent ________ FAX: (______) _________ - _________ N Literature Number: DS21455C © 2006 Microchip Technology Inc. ...

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... To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office PART CODE 6 = LCD } 7 = LED A or blank* R (reversed pins) or blank (CPL pkg only) * "A" parts have an improved reference TC Package Code (see below): © 2006 Microchip Technology Inc. TC7106/A/TC7107A TC711X X X XXX . DS21455C-page 29 ...

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... TC7106/A/TC7107A NOTES: DS21455C-page 30 © 2006 Microchip Technology Inc. ...

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... Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights. © 2006 Microchip Technology Inc. Trademarks The Microchip name and logo, the Microchip logo, Accuron, dsPIC, K ...

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... 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 © 2006 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 ...