GENERAL DESCRIPTION
●The AD7741/AD7742 are a new generation of synchronous voltage-to-frequency converters (VFCs). The AD7741 is a single-channel version in an 8-lead package (SOIC/DIP) and the AD7742 is a multichannel version in a 16-lead package (SOIC/DIP). No user trimming is required to achieve the specified performance.
●The AD7741 has a single buffered input whereas the AD7742 has four buffered inputs that may be configured as two fully differential inputs or three pseudo-differential inputs. Both parts include an on-chip +2.5 V bandgap reference that provides the user with the option of using this internal reference or an external reference.
●FEATURES
● AD7741: One Single-Ended Input Channel
● AD7742: Two Differential or Three Pseudo-Differential Input Channels
● Integral Nonlinearity of 0.012% at fOUT(Max) = 2.75 MHz (AD7742) and at fOUT(Max) = 1.35 MHz (AD7741)
● Single +5 V Supply Operation
● Buffered Inputs
● Programmable Gain Analog Front-End
● On-Chip +2.5 V Reference
● Internal/External Reference Option
● Power Down to 35 mA Max
● Minimal External Components Required
● 8-Lead and 16-Lead DIP and SOIC Packages
●APPLICATIONS
● Low Cost Analog-to-Digital Conversion
● Signal Isolation
