A major advantage the delta-sigma converter offers over conventional type converters is an on-chip digital filter (commonly implemented as a Sinc or Comb filter). For high resolution, low frequency applications, this filter is typically designed to reject line frequencies of 50Hz and 60Hz plus their harmonics. The filter rejection perfor- mance is directly related to the accuracy of the converter system clock. The LTC2436-1 incorporates a highly accu- rate on-chip oscillator. This eliminates the need for exter- nal frequency setting components such as crystals or oscillators. Clocked by the on-chip oscillator, the LTC2436-1 achieves a minimum of 87dB rejection over the range 49Hz t0 61.2Hz.
SK6794 Price| Parameter | Symbol | Range | Unit | Conditions |
| Power supply voltage | VDD | 2.75.5 | V | |
| Input voltage | V in | <0 | dBV | |
| Clock frequency | fCLK | 1 | MHz | Duty s096 |
| Output load resistance | RL | 10 | kQ | Complete analog signal output terminal |
| | | | |
SK6794 on stock| | | 22C10-20 | 22C10-30 | | |
| Symbol | Parameter | Min | Max | Min | Max | Unit | Conditions |
| twc | Write Cycle Time | 200 | | 300 | | ns | |
| tcw | CS Write Pulse Width | 1 50 | | 1 50 | | ns |
| tAS | Address Setup Time | 50 | | 50 | | ns | CL = 100pF |
| tWP | Write Pulse Width | 1 50 | | 1 50 | | ns | +1TTL gate |
| tWR | Write Recovery Time | 25 | | 25 | | ns | VOH = 2.2V |
| tDW | Data Valid Time | 1 00 | | 1 00 | | ns | VOL = 0.65V |
| tDH | Data Hold Time | 0 | | 0 | | ns | VIH = 2.2V |
| tWZ(1) | Output Disable Time | | 1 00 | | 1 00 | ns | VIL = 0.65V |
| tOW | Output Enable Time | 0 | | 0 | | ns |
| | | | | | | |
| 'vS = ov IUIHL : : : Av=1 i i i | | | |
| VIN= | 2vPpA 1- | I ''''r i i i "Js = +1.5V \/IN = +1V k..ii | | | |
| | VS VIN | ~I-U- 3V, OV : O.5V T0 2.: | | | |
| | l ll | | | |
| | vS = ov, uv V m = 0.2V TN =.U.ZV IU 2.2V | | | |
| | _ | .III I I I I III | | | |
| | | | | |
