AD640 (continued from page 1) ABSOLUTE MAXIMUM RATINGS* Supply Voltage . 6. The low input offset voltage of 50 µV (200 µV max) ensures ±7.5 V Input Voltage (Pin 1 or Pin 20 to COM) . –3 V to +300 mV good accuracy for low level dc inputs. Attenuator Input Voltage (Pin 5 to Pin 3/4) . ± 4 V 7. Thermal recovery “tails,” which can obscure the response Storage Temperature Range D, E . –65°C to +150°C when a small signal immediately follows a high level input, Storage Temperature Range N, P . –65°C to +125°C have been minimized by special attention to design details. Ambient Temperature Range, Rated Performance 8. The noise spectral density of 2 nV/√Hz results in a noise floor of Industrial, AD640B . –40°C to +85°C ~23 µV rms (–80 dBm) at a bandwidth of 100 MHz. The dy- Military, AD640T . –55°C to +125°C namic range using cascaded AD640s can be extended to 95 dB Commercial, AD640J . 0°C to +70°C by the inclusion of a simple filter between the two devices. Lead Temperature Range (Soldering 60 sec) . +300°C *Stresses above those listed under Absolute Maximum Ratings may cause perma- nent damage to the device. This is a stress rating only; functional operation of the CHIP DIMENSIONS AND device at these or any other conditions above those indicated in the operational BONDING DIAGRAM section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Dimensions shown in inches and (mm). ESD CAUTIONCONNECTION DIAGRAMS20-Lead Ceramic SBDIP (D) Packag 20-Lead PLCC (P) Packagee20-Terminal Ceramic LCC (E) Package20-Lead Plastic DIP (N) PackageSIG –IN120 SIG +INATN COMATN LOSIG –INSIG +INATN OUTATN COMATN LOSIG –INSIG +INATN OUTATN LO 219 ATN OUT323 2 1 20 19120 19ATN COM 318 CKT COMATN COM 418CKT COMPIN 1ATN COM 418 CKT COMATN COM 417 RG1IDENTIFIERATN IN 517RG1ATN IN 517 RG1ATN IN 516AD640RG0AD640AD640BL1 616RG0BL1 616 RG0TOP VIEWTOP VIEWBL1 615TOP VIEWRG2(Not to Scale)–V715–V7(Not to Scale)15 RG2S(Not to Scale)RG2S–V714SLOG OUTITC 814 LOG OUTITC 814LOG OUTITC 813 LOG COM9 10 11 12 1391011 1213SBL2 912 +VSSBL2+VSIG –OUT 1011 SIG +OUTBL2+VSIG –OUTSIG +OUTLOG COMSIG –OUTSIG +OUTLOG COM –4– REV. D Document Outline AD640-SPECIFICATIONS DC Specifications AC Specifications Thermal Characteristics ABSOLUTE MAXIMUM RATINGS TYPICAL DC PERFORMANCE CHARACTERISTICS TYPICAL AC PERFORMANCE CHARACTERISTICS OUTLINE DIMENSIONS ORDERING GUIDE