ISD ISD1520
Single-Message Voice Record/Playback Device
Single-Chip, Single-Message Voice Record/Playback Device 16- to 32-Second Durations ! 1 $ ! / #G ?'@ / # ! &H * # ! & * # ! & $ ## ! * - . # % # &# & - # 1 ; 3' # # / # & # )% 6 +* $ $ 1 * $ ! * & # ! 1 * $ / # ! & * #$ ! 1 * # . $ 1 $ & $ $ - . # -# # $ - 1 ! % $ * # . * # / ## / $ #* % # &- #* % # !# # & * / * $ $& #* / ! I & % $ ## ! # ! # H * # ! & # # $ ## - ! G# $ / # ! ! ( # ! # # $ $ 1 $* / ! ! &H * # &# / Figure i: ISD1520 Block Diagram ISD—APRIL 1998 i # & & # # ! & * # ! &$ ## ! / - . # = ! &H * / ( - - . - 6 # # # % # # # $ < 8=I # $ E ; # # ; 9 8=I # $ E '@ # # ? 3 8=I # $ E '9 # # 9 @ 8=I # $ E 3' # # # &- 1 5 - . - ! & / & / & < Ω # . / $ % & % $ 5 # # - $ $$ 1 & % ! - . 5 @ ? J # - ) + K & % $ ## ! # ! 5 $ # - - . # @@& $ ## ! ) + @*@@@ # ) + & # ! $ / $ H ! 4? / % # @F ?@F / - % 1 1 $* 1 $* '<& ;@@ $ )1 # $ ! + Part Number Table i: ISD1520 Summary Minimum Duration1 (Seconds) Maximum Input Sample Rate (KHz)1 Typical Filter Upper Pass Band (KHz)1 Ω ii Voice Solutions in...