cxa1829n Sony Electronics, cxa1829n Datasheet
cxa1829n
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cxa1829n Summary of contents
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... Read/Write Amplifier for Thin Film Heads of Hard Disk Drive For the availability of this product, please contact the sales office. Description The CXA1829N is a Read/Write amplifier for hard disk drive thin-film heads and is designed to handle up to 8-channel heads. Features • Operates on a single 5V power supply. ...
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... H5Y 14 H6X AMP 15 H6Y DRIVER CONTROL CURRENT DRIVER SOURCE AMP DRIVER DRIVER SELECT DETECTOR DRIVER DETECTOR DRIVER WRITE IC SERVO PROTECTOR DRIVER DRIVER AMP —2— CXA1829N 30 GND 29 PS MODE 28 R/W WRITE RDY 25 RDX 24 HS0 HEAD 23 HS1 22 HS2 POWER 21 ON/OFF ...
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... GND V CC 100k 2.1V GND V CC 2.1V GND —3— CXA1829N Description GND connection. Head input channels provided. Write-unsafe detection output. Open collector output. When it is high in Write mode, an error is detected. Write data input. When high changes to low, input is triggered power supply. ...
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... GND V CC GND V CC 1.25V GND —4— CXA1829N Description Simultaneous Write signal input. Set to low for simultaneous Write mode. Read amplifier output. Becomes a high impedance at Write. A setting resistor for the Write current value is connected between this pin and GND. ...
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... I = (Rw Refer to Fig. 12 (Characteristics) for K. Input voltage SG1:1mVp-p,300kHz Load resistance (RDX, RDY): 1k Frequency at which Av drops by 3dB Head impedance: 0 In-phase input voltage SG2:100mVp-p, 10 MHz —5— CXA1829N = 15 mA) W Refer to Measurement Circuit 1. Measure- ment Min. Typ. Max. Unit point ...
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... MHz Channel separation CS When Read amplifier output is Vcs (mVp-p), then log (100/Vcs log Av Non-selected head voltage V HUS Measure- Measurement conditions ment point K K Non selected head —6— CXA1829N Refer to Measurement Circuit 1. Min. Typ. Max. Unit 0.2 V ...
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... MHz Refer to Measurement Circuit 2 and Timing Chart. Measurement conditions = the time required for Write R F —7— CXA1829N = 15 mA, L (head W H Min. Typ. Max. Unit 4.4 5.2 Vp-p 280 1000 kHz 0.6 0.6 0.6 µ ...
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... A A SG2 SG1 1µ 1µ 10k 1µH 1µH 1µH 1µH —8— CXA1829N 3.9k 1µ 1µH 1µH ...
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... Timing Chart 1 WDI R/W 50% (WSER 90 RDX RDY Timing Chart 2 50% WDI TPD 90% IWX IWY 10% WUS T SA2 50% 90% 10% T 90% Fig. 3 50% 90% 90% 10 50% Fig. 4 —9— CXA1829N 50 10 90% T SA1 50% ...
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... WSER HSO H X Write H X Read X X Power save 6-head simultaneous Write 7-head simultaneous Write Table 2. Head selection HS1 HS2 Head —10— CXA1829N Mode ...
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... CC falls below the threshold voltage (V CC +5V PULSE DETECTOR 10k Fig. 5 —11— CXA1829N ) of the power supply ON/OFF TH 1µ 3. ...
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... Please apply to the reference mentioned on this back cover since the operation range of the write- unsafe detection circuit is greatly affected by the head inductance, head DC resistance and Write current. • Use the IC with Ta at 30°C or less in Simultaneous Write mode. 1.5V T1 Fig less than 2V, the write-unsafe detection maximum FB —12— CXA1829N V = GND ...
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... Symbol Measurement conditions C 0 Between head input pins Between head input pins RDX or RDY RD LH=1µH, RH= =15mA W LH=0µH, RH =15mA W —13— CXA1829N V =5V, Ta=25°C CC Min. Typ. Max. Unit 15 pF 235 315 395 0.7 1 0.2 mAp ...
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... Fig. 12 Write current setting constant K V =5V CC 150 148 146 V OFF TH 144 142 140 50 75 —14— CXA1829N Fig. 8 Normalized Write current vs. Ambient temperature V = =10k Ta-Ambient temperature (°C) vs. Ambient temperature V =5V CC Vin=1mVp-p f=300kHz Ta-Ambient temperature (° ...
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... NOTE: “ ” Dimension do not include mold protrusion. SONY CODE EIAJ CODE JEDEC CODE 30PIN SSOP (PLASTIC 0.05 0.65 ± 0.12 0.15 – 0.02 0° to 10° DETAIL A PACKAGE STRUCTURE PACKAGE MATERIAL LEAD TREATMENT SSOP-30P-L01 LEAD MATERIAL SSOP030-P-0056 PACKAGE WEIGHT —15— CXA1829N + 0.2 1.25 – 0.1 0.10 0.1 ± 0.1 EPOXY RESIN SOLDER/PALLADIUM PLATING COPPER/42 ALLOY 0.1g ...