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MC145076 bảng dữ liệu(PDF) 1 Page - Motorola, Inc |
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MC145076 bảng dữ liệu(HTML) 1 Page - Motorola, Inc |
1 / 8 page MC145076 MOTOROLA 1 Product Preview MC145076 Stereo Audio FIR Smoothing Filter CMOS The MC145076 is a combination re–clocking and smoothing filter designed especially for the MC145074 Stereo Audio DAC. Its versatility however, allows it to be used with any single bit–stream data converter to provide output reconstruction filtering, and to improve performance by restoring pulse shape integrity. The MC145076 provides a well controlled, filtered output that can be used directly, or with a current summing operational amplifier. The MC145076 is intended to be one half of a two–chip solution for serial bit steam DACs. The analog filtering function of the MC145076 eases the digital filtering requirements at the input to the digital noise shaping modulator, and eliminates the need for precision analog output filtering capacitors, resulting in lower overall system cost. The MC145076 pulse shape restoration frees the designer from analog pitfalls that can impact performance, thereby lowering the risk of new product development with a sigma–delta DAC. • Single–Ended Stereo Outputs Require no Additional Smoothing Filters • 86 dB S/D, 96 dB S/N with MC145074 @ 192 x OSR Single Ended • > 100 dB S/(N+D) @ 256 OSR, Differential Mode • 18.5 MHz Maximum Serial Data Input Rate • – 80 dB Cross Channel Interference • 72–Tap FIR with > 40 dB Alias Filtering • Operating Temperature Range: – 40 to + 85_C • Buffered Data Clock Output for Ease of Data Generation • 16–Pin Narrow Body SOIC Package • Single Supply Operation: + 5 V TIMING AND CONTROL LOGIC DIL 5 DIR 6 DIV2 4 TEST 7 Xout Xin 16 2 VDDA 1 VDDD 8 GND 10 GND 15 LEFT 144 SERIAL SHIFT REG. LEFT CHOP C (1) 14 IOL GND 144 TAP HAMMING WINDOW COEFFICIENTS 13 9 CLKOUT RIGHT 144 SERIAL SHIFT REG. RIGHT CHOP C (1) 11 IOR GND 144 TAP HAMMING WINDOW COEFFICIENTS 12 C (144) C (144) BIAS 3 This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice. Order this document by MC145076/D MOTOROLA SEMICONDUCTOR TECHNICAL DATA PIN ASSIGNMENT MC145076 D SUFFIX 16–PIN SOG CASE 751B–05 ORDERING INFORMATION MC145076D SOG Package 13 14 15 16 9 10 11 12 5 4 3 2 1 8 7 6 GND GND IOL GND Xout CLKOUT GND IOR DIV2 BIAS Xin VDDA VDDD TEST DIR DIL 16 1 © Motorola, Inc. 1996 REV 1 9/96 |
Số phần tương tự - MC145076 |
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Mô tả tương tự - MC145076 |
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