MC34250FTA [MOTOROLA]
HARD DISK DRIVE READ CHANNEL; 硬盘驱动器读取信道型号: | MC34250FTA |
厂家: | MOTOROLA |
描述: | HARD DISK DRIVE READ CHANNEL |
文件: | 总4页 (文件大小:145K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
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The Motorola MC34250 is a fully integrated partial response maximum
likelihood disk drive read/write channel for use in zoned recording
applications. This device integrates the AGC, active filter, 7 tap equalizer,
Viterbi detector, frequency synthesizer, servo demodulator, 8/9 rate (0,4/4)
Encoder/Decoder with write precompensation and power management in a
single 64 pin 10 mm x 10 mm TQFP package.
HARD DISK DRIVE
READ CHANNEL
SEMICONDUCTOR
TECHNICAL DATA
FEATURES:
• 50 to 200 MBPS Programmable Data Rate
• 800 mW at 200 MBPS and 5.0 V
• Channel Monitor Output
• Programmable AGC Charge Pump Currents with Different Values for
Data and Servo Envelope Modes and Gain Gradient Mode
• Programmable AGC Peak Detector Droop Currents with Different
Values for Data and Servo Envelope Modes
• Separate AGC Charge Pump Outputs for Data and Servo Modes
• Programmable Dual Threshold Qualifier or Hysteresis Comparator Type
Pulse Detector for Servo Data Detection.
64
1
• ERD and Polarity Outputs for Servo Timing and Raw Encoded Data
• Integrated 7 pole 0.05° Equiripple Linear Phase Filter with
Programmable Bandwidth from 5.0 MHz to 80 MHz and Different Values
for Both Data and Servo Modes
FTA SUFFIX
PLASTIC PACKAGE
CASE 840F
• Programmable Symmetrical Boost from 0 to 10 dB and Different Values
(Thin QFP)
for Data and Servo Modes
• Programmable Asymmetrical Boost of Up to ±40% of Nominal Filter
Group Delay in Both Data and Servo Modes
• 7 Tap Continuous Time Transversal Equalizer with 8 Bit Programmable
Tap Weights and Integrated Decision Directed Sign–Sign Least Mean
Squared Adaptation
ORDERING INFORMATION
Operating
Temperature Range
Device
Package
• Internal Offset Cancellation Loops
• Fast Acquisition Data Phase Locked Loop with Zero Phase Restart
• Programmable Data Phase Locked Loop Charge Pump Current
MC34250FTA
T
A
= 0° to +70°C
TQFP–64
• Integrated Soft Decision Viterbi Detectors with Programmable Merge
References
• Integrated 8/9 Rate (0,4/4) Encoder and Decoder with Code Scrambler
and Descrambler
• Programmable 2/4/8 Bit NRZ Data Interface
• Programmable Write Precompensation Delays Locked to the Frequency
Synthesizer
• Differential PECL Write Data Outputs
• External Write Data Path for DC Erase or Other Non–Encoded Data
• Integrated Write Current DAC
• Programmable Power Management
• Bi–Directional Serial Microprocessor Interface
• Various Test Modes Controlled Via the Serial Microprocessor Interface
This document contains information on a product under development. Motorola reserves the
right to change or discontinue this product without notice.
Motorola, Inc. 1996
Issue 0
MC34250
Simplified Block Diagram
DPLLFP
DPLLFM
IWRITE
BRSTA/DTP1
WCSENSE
WCINHB
BRSTB/DTP2
BRSTC/DTP3
BRSTD/DTP4
SRVOUT
SRVREF
SRVRSTB
SRVSMPLB
SPOL
SERD
SYNTHFM
SYNTHFP
(7)
(6)
GND
V
CC
This device contains 80,000 active transistors.
2
MOTOROLA ANALOG IC DEVICE DATA
MC34250
OUTLINE DIMENSIONS
FTA SUFFIX
PLASTIC PACKAGE
CASE 840F–01
(Thin QFP)
ISSUE O
L
-Z-
64
49
1
48
-T-, -U-, -Z-
P
L
B
V
AE
AE
-T-
-U-
DETAIL AA
G
DETAIL AA
33
16
32
17
A
BASE
METAL
M
N
S
S
S
S
0.20 (0.008)
AB T–U
Z
Z
0.050 (0.002) T–U
S
M
0.20 (0.008)
AC T–U
F
D
M
C
E
J
-AB-
SECTION AE-AE
0.10
(0.004)
DETAIL AD
Y
H
-AC-
MILLIMETERS
MIN MAX
9.950 10.050
9.950 10.050
INCHES
NOTES:
DIM
A
B
C
D
E
MIN
MAX
0.396
0.396
0.063
0.011
0.057
0.009
1
DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
0.392
0.392
0.055
0.007
0.053
0.007
2
3
CONTROLLING DIMENSION: MILLIMETER.
Q
1.400
0.170
1.350
0.170
1.600
0.270
1.450
0.230
DATUM PLANE -AB- IS LOCATED AT BOTTOM OF
LEAD AND IS COINCIDENT WITH THE LEAD
WHERE THE LEAD EXITS THE PLASTIC BODY AT
THE BOTTOM OF THE PARTING LINE.
DATUMS -T-, -U- AND -Z- TO BE DETERMINED AT
DATUM PLANE -AC-.
F
R
G
H
J
K
L
M
N
P
Q
R
S
0.500 BSC
0.020 BSC
4
5
6
0.050
0.090
0.450
0.150
0.200
0.550
0.002
0.004
0.018
0.006
0.008
0.022
K
DIMENSIONS S AND V TO BE DETERMINED AT
SEATING PLANE -AC-.
W
7.500 BSC
0.295 BSC
DIMENSIONS A AND B DO NOT INCLUDE MOLD
PROTRUSION. ALLOWABLE PROTRUSION IS
0.25 (0.010 ) PER SIDE. DIMENSIONS A AND B DO
INCLUDE MOLD MISMATCH AND ARE
DETERMINED AT DATUM PLANE -AB-.
DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. DAMBAR PROTRUSION SHALL
NOT CAUSE THE D DIMENSION TO EXCEED
0.350 (0.014).
°
°
12 REF
0.090 0.160
0.250 BSC
12 REF
0.004 0.006
0.010 BSC
X
DETAIL AD
°
°
5
1°
5
1
°
0.100
0.200
0.004
0.469
0.469
0.008
0.476
0.476
11.900 12.100
11.900 12.100
0.200 REF
7
V
W
X
0.008 REF
0.039 REF
°
12 REF
1.000 REF
°
12 REF
Y
3
MOTOROLA ANALOG IC DEVICE DATA
MC34250
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding
the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and
specificallydisclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters which may be provided in Motorola
datasheetsand/orspecificationscananddovaryindifferentapplicationsandactualperformancemayvaryovertime. Alloperatingparameters,including“Typicals”
must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of
others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other
applicationsintended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury
ordeathmayoccur. ShouldBuyerpurchaseoruseMotorolaproductsforanysuchunintendedorunauthorizedapplication,BuyershallindemnifyandholdMotorola
and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees
arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that
Motorola was negligent regarding the design or manufacture of the part. Motorola and
Opportunity/Affirmative Action Employer.
are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal
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3–14–2 Tatsumi Koto–Ku, Tokyo 135, Japan. 03–81–3521–8315
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51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298
MC34250/D
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