DC1858A

DC1858A demonstration circuit is a low noise, low distortion sine wave generator designed to be used in conjunction with Linear Technology 16bit and 18bit ADC demo boards. Functionally, this board uses a Wien bridge oscillator that has been level shifted to match the input range of 0V to 5V 16bit and 18bit Linear Technology ADC demo boards. The default oscillator output level is 0.5V to 4.5V. The output level and frequency can be adjusted by changing a few resistors and capacitors. The DC1858A has 5V and ±12V outputs that can be used to provide power for the ADC demo board under test and the DC1216A low jitter clock source if required. The DC1858A combined with the DC1216A, an ADC demo board and a high speed USB controller (DC718 or DC890) form a complete ADC evaluation system when used with LTC’s PScope™ software.

• 2KHz output frequency