Texas Instruments Lm331N/nopb
IC, VOLT/FREQ CONV, 10KHZ, 0.01%, PDIP-8; Frequency:100kHz; Full Scale Range:1Hz to 100kHz; Linearity %:0.01%; Supply Voltage Range:4V to 40V; Digital IC Case:DIP; No. of Pins:8Pins; Product Range:LMx31x; MSL:MSL 1 - Unlimited; SVHC:No SVHC (15-Jan-2019)