The LOGDAC® AD7118 is a CMOS multiplying D/A con- verter 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. The device is manufactured using an advanced monolithic silicon gate thin-film on CMOS process and is packaged in a 14-pin dual-in-line package.
The AD7118 is a CMOS multiplying D/A converter designed to attenuate an analog input signal over a range of 0 to –85.5 dB in 1.5 dB steps. The device operates with a six-bit attenuation code applied to digital inputs and functions within an operating frequency range from DC to several hundred kHz.
| Resolution | 1.5 dB |
|---|---|
| Dynamic Range | 85.5 dB |
| Input Resistance (All Grades) | 9 kΩ min |
| Operating Temperature Range (Extended) | -55°C to +125°C |
The nominal resolution is 1.5 dB.
Typical applications include Digitally Controlled AGC Systems, Audio Attenuators, Wide Dynamic Range A/D Converters, Sonar Systems, and Function Generators.