HT7126A Datasheet | HTCSEMI

features auto-zero to less than 10V, zero drift of less than 1V/o C, input bias current of 10p A (Max), and rollover error of less than one count. True differential inputs and reference are useful in all systems, but give the designer an unmon advantage when measuring load cells, strain gauges and other bridge type transducers. Finally, the true economy of single power supply operation, enables a high performance panel meter to be built with the addition of only 10 passive ponents and a display. The HT7126A is an improved version of the ICL7126, eliminating the overrange hangover and hysteresis effects, and should be used in its place in all applications. It can also be used as a plug-in replacement for the ICL7106 in a wide variety of applications, changing only the passive ponents. Features - First Reading Overrange Recovery in One Conversion Period - Guaranteed Zero Reading for 0V Input on All Scales - True Polarity at Zero for Precise Null Detection - 1p A Typical Input Current - True Differential Input and Reference, Direct Display Drive - LCD HT7126A - Low Noise - Less Than 15VP-P - On Chip Clock and Reference - No Additional Active Circuits Required - Low Power - Less Than 1m W - Surface Mount Package Available - Drop-In Replacement for ICL7126, No Changes Needed - Pb-Free Plus Anneal Available (Ro HS pliant) Ordering Information HT7126ANZ HT7126ARQZ HT7126ARSZ DIP40 LQFP44(10- 10) SSOP48 TA = -45to 85C for all packages Rev. 00 Pinouts (DIP40) TOP VIEW V+ 1 D1 2 C1 3 B1 4 (1’s) A1 5 F1 6 G1 7 E1 8 D2 9 C2 10 B2 11 (10’s) A2 12 F2 13 E2 14 D3 15 B3 16 (100’s) F3 17 E3 18 (1000) AB4 19 (MINUS) POL 20 40 OSC 1 39 OSC 2 38 OSC 3 37 TEST 36 REF HI 35 REF LO 34 CREF+ 33 CREF32 MON 31 IN HI 30 IN LO 29 A-Z 28 BUFF 27 INT 26 V25 G2 (10’s) 24 C3 23 A3 (100’s) 22 G3 21 BP/GND (QFP44) TOP VIEW REF HI REF LO CREF + CREF MON IN HI IN LO A- Z BUFF IN T V- NC NC TEST OSC 3 NC OSC 2 OSC 1 V+ D1 C1 B1 44 43 42 41 40 39 38 37 36 35...