TC7126 TelCom, TC7126 Datasheet
TC7126
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TC7126 Summary of contents
Page 1
... The TC7126A features a precision, low-drift internal voltage reference and is functionally identical to the TC7126. A low-drift external reference is not normally required with the TC7126A. ORDERING INFORMATION ...
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... Ext Ref Temp Coeff = 0 ppm 250 k Between Common and +70 C ("C" Devices): A TC7126 TC7126A – +85 C ("I" Device): A TC7126A + 250 k Between Common and V + – – – 0V ...
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... C 3 100's 100 (BACKPLANE) (BACKPLANE INTERNAL CONNECTION TC7126 TC7126A TC7126CKW TC7126ACKW 27 (FLAT PACKAGE REVERSE PIN CONFIGURATION ...
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... TC7126 TC7126A PIN DESCRIPTION 40-Pin PDIP Pin Number Normal (Reverse) Name 1 (40) 2 (39) 3 (38) 4 (37) 5 (36) 6 (35) 7 (34) 8 (33) 9 (32) 10 (31) 11 (30) 12 (29) 13 (28) 14 (27) 15 (26) 16 (25) 17 (24) 18 (23) 19 (22) 20 (21) POL 21 (20) 22 (19) 23 (18) 24 (17) 25 (16) 26 (15) 27 (14) 28 (13 ...
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... Pin Designations Refer to the 40-Pin DIP) Dual-Slope Conversion Principles The TC7126A is a dual-slope, integrating analog-to- digital converter. An understanding of the dual-slope con- version technique will aid in following detailed TC7126A operational theory. The conventional dual-slope converter measurement cycle has two distinct phases: ...
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... The auto-zero loop is entered and the internal differen- + tial inputs connect signal is integrated for a fixed time period. The TC7126A signal integration period is 1000 clock periods, or counts. The externally-set clock frequency is 4 before clocking the 10/t internal counters. The integration time period is: ...
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... DIGIT ANALOG-TO-DIGITAL CONVERTERS TELCOM SEMICONDUCTOR, INC. Figure 3. TC7126A Block Diagram 1 TC7126 TC7126A 3-223 ...
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... LCD segment, ensuring long LCD life. The polarity segment driver is ON for negative analog inputs reversed, this indicator would reverse. On the TC7126A, when the TEST pin is pulled to V segments are turned ON. The display reads –1888. During this mode, LCD segments have a constant DC voltage impressed. DO NOT LEAVE THE DISPLAY IN THIS MODE FOR MORE THAN SEVERAL MINUTES ...
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... V very stable voltage, suitable for use as a voltage reference. REF The temperature coefficient of analog common is typically 100 mV 35 ppm/ C for the TC7126A and 80 ppm/ C for the TC7126. 1V ANALOG COMMON (Pin 32) The analog common pin is set at a voltage potential approximately 3V below V be between 2.7V and 3.35V below V ...
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... IN IN temperature stability (typically 35 ppm/ c). This potential is connected to analog can be used to generate the TC7126A's reference voltage. An external voltage reference will be unnecessary in most cases because of the 35 ppm/ C temperature coefficient. See "TC7126A Internal Voltage Reference" discussion. are usually connected, ...
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... MAXIMUM 26 SPECIFIED V – TYPICAL ICL7136 Figure 8. TC7126A Internal Voltage Reference Connection Flat Package The TC7126A is available in an epoxy 64-pin formed- lead flat package. A test socket for the TC7126ACBQ device is available: Part No. Manufacturer: Yamaichi Representative Distribution: * Part Numbers C5335, H5535, T5135, SX440 ...
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... AD636 5 6.8 µ 10% Figure 11. 3-1/2 Digit True RMS AC DMM 3-1/2 DIGIT REF – V REF + V IN TC7126A – ANALOG COMMON 9V 26 – 240 k 12 TC7126A REF 35 V – REF 10 32 ANALOG ...
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... Figure 14. Integrated Circuit Temperature Sensor TC7126 TC7126A + 9V 5.6 k 160 – 1N4148 TC7126A + REF 20 k – V REF COMMON Temperature Sensor + REF 50 k – V REF + V IN TC7126A V IN – COMMON V – – 3-229 ...