cxa3071n Sony Electronics, cxa3071n Datasheet
cxa3071n
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cxa3071n Summary of contents
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... Read/Write Amplifier (with Built-in Filters) for FDDs For the availability of this product, please contact the sales office. Description The CXA3071N is a monolithic IC designed for use with three-mode Floppy Disk Drives, and contains a read circuit (with a four-mode filter system), a write circuit, an erase circuit, and a supply voltage detection circuit, all on a single chip ...
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... Block Diagram and Pin Configuration 20 19 WRITE DRIVER TIME CONTROL DOMAIN LOGIC FILTER FILTER DIFF + LPF (BPF) PREAMP ERASE POWER DRIVER MONITOR – 2 – CXA3071N COMP ...
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... MONITOR differential outputs. 9 These pins are set to filter output during 10 normal read mode, but the preamplifier output can be monitored by temporarily setting Pin 20 (SETR) to Low. GND – 3 – CXA3071N Description . When the logical voltage for CC is below the specified value. CC ...
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... High. 2.1V Filter, time domain filter and write current GND 1M/2M mode control. 1.6M/2M mode is selected when the logical voltage is Low. Filter, time domain filter and write current 1.6M/2M mode control. 1.6M mode is selected when the logical voltage is Low. Power supply (5V) connection. – 4 – CXA3071N Description ...
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... SETR Equivalent circuit V CC Filter cutoff frequency, time domain filter 1st monostable multivibrator pulse width, 20 147 read data, write current and erase current setting resistor connection. Connect the setting resistor R between this pin and GND – 5 – CXA3071N Description ...
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... Conditions circuit — — — Measurement Conditions circuit — = 3.5V CC — Measurement Measurement circuit point – 6 – CXA3071N (Ta = 25° 5V) CC Measurement Min. Typ. Max. Unit point — 15.0 25.0 35.0 — 11.0 17.0 23.0 — — 1.2 2.0 (Ta = 25°C) Measurement Min. Typ. Max. Unit point — ...
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... Conditions circuit 2mA –0.4mA = 20pF 20pF L = 0.25mVp 0.25mVp-p to 5mVp-p = 0.25mVp-p to 3.5mVp-p – 7 – CXA3071N (Ta = 25° 5V) CC Measurement Min. Typ. Max. Unit point Vp 1.4 — — µs 2.50 2. 2.25 µ 1.16 1.29 1. 300 400 ...
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... T 1 ETM1 = ( –1) 100 [%] 2.5µs When X360 = "X" and XHD = "L" ETM1 –1) 100 [%] 1.29µs • 2nd monostable multivibrator pulse width = T • Peak shift 1 T – 100 [%] – 8 – CXA3071N 1. ...
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... Refer to Fig Refer to Fig Refer to Fig Refer to Fig Refer to Fig Refer to Fig – 9 – CXA3071N (Ta = 25° 5V) CC Min. Typ. Max. Unit A, B 165.6 184.0 202.4 kHz A, B 4.1 6.0 7 –7.4 –6.9 –6 –24.9 – ...
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... ILKE XEG = "L" pin leak current Gn1 1/3fon fon 3fon Measurement Conditions circuit = – 10 – CXA3071N Gn2 f [Hz] (Ta = 25° 5V) CC Measurement Min. Typ. Max. Unit point A', B' –20 — +20 C 8.83 9.5 10. 6.62 7.12 7 ...
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... Measurement Measurement Conditions circuit point – 11 – CXA3071N (Ta = 25° 5V) CC Min. Typ. Max. Unit — — 0.8 2.0 — — G — — 0.8 G 2.0 — ...
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... Note) Unless otherwise specified, switches are assumed to be set to "a". CR time constant of external comparator input stage is equivalent to the time constant of comparator input stage within the IC SW3 SW2 – 12 – CXA3071N 3300p C 12k External Comparator 3300p ...
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... Electrical Characteristics Measurement Circuit 2 5V 10k SW1 Note) Unless otherwise specified, switches are assumed to be set to "a" SW2 b VSW E F – 13 – CXA3071N ...
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... Chebyshev 1dB ripple H is fixed and used as a reference (1.00), and f 01 BPF LPF HPF Tertiary Primary = 1.2 f fc: variable f = 5kHz C CH Filter block LPF characteristics – 14 – CXA3071N for the other 0 9 MONITORA Amp 10 MONITORB Gain: 8dB of the LPF. The LPF 0 f ratio 0 1.00 1.07 1.88 2.09 1.88 ...
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... SETR (Pin 20) MONITORA (Pin 9) Z PREOUTA "L" pulse SW switching signal TDF COMP FILA PREA FILB PREB Monitor block configuration MONITORB (Pin 10) FILOUTA FILOUTB PREOUTB – 15 – CXA3071N 9 MONITORA 10 MONITORB SW Monitor mode Filter output Preamplifier output ...
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... If the preamplifier output amplitude exceeds 1Vp-p, the filter output waveform becomes distorted. • Observe the following point when mounting this device. • The GND should be as large as possible. • Connect a V decoupling capacitor of about 0.1µF as close to the device as possible. CC can be changed for each mode by switching Pin 16. W – 16 – CXA3071N ...
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... TIME CONTROL DOMAIN LOGIC FILTER FILTER DIFF + LPF (BPF) PREAMP ERASE POWER DRIVER MONITOR – 17 – CXA3071N COMP and set XHD (Pin 17) high or low to ...
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... LPF type: Butterworth characteristics Chebyshev (1dB ripple characteristics) f B.P 0.577 (Differential characteristics 1.6M, 2M/inner track Tertiary Chebyshev fc 4 fo4 fcn = 1.28f 1.09f C4 04 – 18 – CXA3071N L.P.F (High-band noise cutoff) 1dBRp (Comprehensive characteristics) and follows, 0 ...
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... Chebyshev (1dB ripple) The boxed ratio indicates the setting for the CXA3071N. Write Current Setting Method Assuming the outer track as 1.00, the write current ratio is fixed within the IC for each mode. The write current for the outer track is fixed within the IC. ...
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... V CC –180 R = 10k – 10k f = 384.6 [kHz] 04 – 20 – CXA3071N 180 Voltage gain 90 0 Phase –90 –180 10M 1M/inner track Phase Voltage gain = 5V 25°C –180 40k 100k 400k 1M 4M Frequency [Hz] 1.6M, 2M/inner track Voltage ...
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... Ta = 25° 0.95 4 Vcc — Supply voltage [V] Normalized 1st monostable multivibrator pulse width NT vs. Supply voltage Vcc 1 1.05 1. 25°C NTA = T /T 10k 1 0.95 80 4.0 Vcc — Supply voltage [V] – 21 – CXA3071N 20 10k ( 5.0 6 10k V CC 5.0 6 ...
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... Ta = 25° 0.95 80 4.0 Vcc — Supply voltage [V] vs. Normalized erase current NI Supply voltage Vcc 1.05 1. 25° 0.95 80 4.0 Vcc — Supply voltage [V] – 22 – CXA3071N vs 5V 10k V CC 5.0 6 5V) 10k 5.0 6.0 vs 5V) 10k ...
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... Power supply ON/OFF detector threshold voltage V vs. Ambient temperature Ta TH 4.1 4.0 3.9 3.8 3.7 3.6 – — Ambient temperature [°C] – 23 – CXA3071N 80 ...
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... This product uses S-PdPPF (Sony Spec.-Palladium Pre-Plated Lead Frame). 20PIN SSOP (PLASTIC 0.05 0.15 – 0.02 0.65 ± 0.12 0.1 ± 0.1 0° to 10° DETAIL A PACKAGE STRUCTURE PACKAGE MATERIAL EPOXY RESIN SOLDER / PALLADIUM LEAD TREATMENT LEAD MATERIAL COPPER / 42 ALLOY PACKAGE WEIGHT 0.1g – 24 – CXA3071N + 0.2 1.25 – 0.1 0.1 PLATING ...