GENERAL DESCRIPTION
The LOGDAC® AD7118 is a CMOS multiplying D/A converter which attenuates an analog input signal over the range 0 to –85.5 dB in 1.5 dB steps. The analog output is determined by a six-bit attenuation code applied to the digital inputs. Operating frequency range of the device is from dc to several hundred kHz.

FEATURES
    Dynamic Range 85.5 dB
    Resolution 1.5 dB
    Full ±25 V Input Range Multiplying DAC
    Full Military Temperature Range –558°C to +1258°C
    Low Distortion
    Low Power Consumption
    Latch Proof Operation (Schottky Diodes Not Required)
    Single 5 V to 15 V Supply

APPLICATIONS
    Digitally Controlled AGC Systems
    Audio Attenuators
    Wide Dynamic Range A/D Converters
    Sonar Systems
    Function Generators