mc145076 Freescale Semiconductor, Inc, mc145076 Datasheet

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mc145076

Manufacturer Part Number
mc145076
Description
Mc145076 Stereo Audio Smoothing Filter
Manufacturer
Freescale Semiconductor, Inc
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
mc145076D
Manufacturer:
MOTOROLA/摩托罗拉
Quantity:
20 000
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Product Preview
MC145076 Stereo Audio FIR
Smoothing Filter
CMOS
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.
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.
This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice.
REV 1
9/96
MOTOROLA
V DDD
V DDA
TEST
The MC145076 is a combination re–clocking and smoothing filter designed
The MC145076 is intended to be one half of a two–chip solution for serial bit
Motorola, Inc. 1996
BIAS
DIV2
GND
GND
X out
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
DIR
DIL
X in
2
5
6
4
7
1
8
10
15
3
16
CONTROL
TIMING
LOGIC
AND
RIGHT CHOP
LEFT CHOP
RIGHT 144 SERIAL SHIFT REG.
LEFT 144 SERIAL SHIFT REG.
C (1)
C (1)
16
ORDERING INFORMATION
MC145076D
MC145076
V DDA
V DDD
144 TAP HAMMING
TEST
144 TAP HAMMING
BIAS
DIV2
1
COEFFICIENTS
DIR
COEFFICIENTS
DIL
X in
PIN ASSIGNMENT
WINDOW
WINDOW
1
2
3
4
5
6
7
8
CASE 751B–05
16–PIN SOG
SOG Package
Order this document
D SUFFIX
C (144)
C (144)
16
15
14
13
12
10
11
9
by MC145076/D
X out
GND
IOL
GND
GND
IOR
GND
CLKOUT
MC145076
14
13
9
11
12
IOL
GND
CLKOUT
GND
IOR
1

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mc145076 Summary of contents

Page 1

... 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 ...

Page 2

... MHz, DIV2 = 990.527 Hz, 20 Bit 2nd Order Modulator Input Data) Parameter Dynamic Range S/(N+D) Flat A–weighted Idle Channel Noise 60 Hz Power Supply Rejection * Noise performance limited by second order digital modulator. MC145076 2 Value Unit 6.0 V GND – 0 0.5 GND – 0 ...

Page 3

... CLKOUT 10 90% DIR OR DIL 10% MOTOROLA (Full Temperature and Voltage Ranges per Operation Ranges Table) Parameter TIMING WAVEFORMS 50% 50% t PLH 90% 50% 10% t TLH 90% 50% t TLH t THL Figure 1. Guaranteed Limit Unit 37 MHz PHL 10% MC145076 3 ...

Page 4

... PIN DESCRIPTIONS out Oscillator Inverter Input and Output (Pins 2, 16 external clock is used to drive the MC145076, the clock should be connected pin. For maximum perfor- mance however recommended that these pins be used in conjunction as a crystal oscillator. BIAS Bias Adjust (Pin 3) For normal device operation, this pin should be connected to ground through a 4 ...

Page 5

... MOTOROLA MC145076 5 ...

Page 6

... MC145076 6 MC145076 MC145074 MC145076 MOTOROLA ...

Page 7

... MOTOROLA MC145076 MC145074 MC145076 MC145076 7 ...

Page 8

... IN EXCESS OF THE D DIMENSION AT MAXIMUM MATERIAL CONDITION. MILLIMETERS INCHES DIM MIN MAX MIN MAX A 9.80 10.00 0.386 0.393 B 3.80 4.00 0.150 0.157 C 1.35 1.75 0.054 0.068 D 0.35 0.49 0.014 0.019 F 0.40 1.25 0.016 0.049 1.27 BSC 0.050 BSC G J 0.19 0.25 0.008 0.009 K 0.004 0.009 0.10 0. 5.80 6.20 0.229 0.244 R 0.25 0.50 0.010 0.019 *MC145076/D* MC145076/D MOTOROLA ...

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