DATASHEET ICL7136 FN3086 Rev 6.00 31/2 Digit LCD, Low Power Display, A/D Converter with Overrange Recovery July 21, 2005 1 The Intersil ICL7136 is a high performance, low power 3 / 2 Features digit, A/D converter. Included are seven segment decoders, First Reading Overrange Recovery in One Conversion display drivers, a reference, and a clock. The ICL7136 is Period designed to interface with a liquid crystal display (LCD) and Guaranteed Zero Reading for 0V Input on All Scales includes a multiplexed backplane drive. True Polarity at Zero for Precise Null Detection The ICL7136 brings together a combination of high 1pA Typical Input Current accuracy, versatility, and true economy. It features auto-zero o to less than 10 V, zero drift of less than 1 V/ C, input bias True Differential Input and Reference, Direct Display Drive current of 10pA (Max), and rollover error of less than one - LCD ICL7136 count. True differential inputs and reference are useful in all Low Noise - Less Than 15V P-P systems, but give the designer an uncommon advantage On Chip Clock and Reference when measuring load cells, strain gauges and other bridge No Additional Active Circuits Required type transducers. Finally, the true economy of single power supply operation, enables a high performance panel meter Low Power - Less Than 1mW to be built with the addition of only 10 passive components Surface Mount Package Available and a display. Drop-In Replacement for ICL7126, No Changes Needed The ICL7136 is an improved version of the ICL7126, Pb-Free Plus Anneal Available (RoHS Compliant) eliminating the overrange hangover and hysteresis effects, Ordering Information 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 TEMP. PKG. variety of applications, changing only the passive PART NUMBER RANGE (C) PACKAGE DWG. components. ICL7136CPL 0 to 70 40 Ld PDIP E40.6 ICL7136CPLZ 0 to 70 40 Ld PDIP E40.6 (Note 1) (Pb-free) (Note 2) ICL7136CM44 0 to 70 44 Ld MQFP Q44.10x10 ICL7136CM44Z 0 to 70 44 Ld MQFP Q44.10x10 (Note 1) (Pb-free) ICL7136CM44ZT 44 Ld MQFP Tape and Reel Q44.10x10 (Note 1) (Pb-free) NOTES: 1. Intersil Pb-free plus anneal products employ special Pb-free material sets molding compounds/die attach materials and 100% matte tin plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 2. Pb-free PDIPs can be used for through hole wave solder processing only. They are not intended for use in Reflow solder processing applications. FN3086 Rev 6.00 Page 1 of 15 July 21, 2005ICL7136 Pinouts (PDIP) (MQFP) TOP VIEW TOP VIEW V+ 1 40 OSC 1 D1 2 39 OSC 2 3 38 OSC 3 C1 B1 4 37 TEST (1s) A1 5 36 REF HI 6 35 REF LO 44 43 42 41 40 39 38 37 36 35 34 F1 1 NC NC 33 7 34 C + G1 REF 2 G2 NC 32 E1 8 33 C - REF 3 C3 TEST 31 9 32 COMMON D2 4 A3 30 OSC 3 10 31 IN HI C2 G3 5 29 NC B2 11 30 IN LO (10s) 6 OSC 2 28 BP/GND 12 29 A-Z A2 OSC 1 7 27 POL 13 28 BUFF F2 V+ 8 26 AB4 E2 14 27 INT D1 9 25 E3 D3 15 26 V- C1 10 24 F3 16 25 G2 (10s) B3 (100s) 11 23 B1 B3 F3 17 24 C3 12 13 14 15 16 17 18 19 20 21 22 (100s) E3 18 23 A3 19 22 G3 (1000) AB4 (MINUS) POL 20 21 BP/GND A1 F1 G1 E1 D2 C2 B2 A2 F2 E2 D3 FN3086 Rev 6.00 Page 2 of 15 July 21, 2005 REF HI REF LO C + REF C - REF COMMON IN HI IN LO A-Z BUFF INT V-