The AD1376/AD1377 are high resolution， 16-bit analog-todigital converters with internal reference， clock， and lasertrimmed thin-film applications resistors. The AD1376/AD1377 are excellent for use in high resolution applications requiring moderate speed and high accuracy or stability over commercial temperature ranges （0°C to 70°C）。 They are packaged in compact 32-lead， ceramic seam-sealed （hermetic）， dual in-line packages （DIP）。 Thin-film scaling resistors provide bipolar input ranges of ±2.5 V， ±5 V， and ±10 V and unipolar input ranges of 0 V to +5 V， 0 V to +10 V， and 0 V to +20 V. Digital output data is provided in parallel form with corresponding clock and status outputs. All digital inputs and outputs are TTL-compatible. For the AD1376， the serial output function is no longer available after date code 0111. For the AD1377， the serial output function is no longer available after date code 0210. The option of applying an external clock on the CONVERT START pin to slow down the internally set conversion time is no longer supported for either part.