CXA3071N 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. Features • Single 5V power supply • All filter, write current and other characteristics can be set with a single external resistor. • Filter system can be switched among four modes: 1M, 1.6M/2M, which are each inner track/outer track. • Filter characteristics can be set to Chebyshev (1dB ripple) for 1.6M, 2M/inner track only, and to Butterworth for the other modes and a custom selection can be made between Chebyshev (1dB ripple) and Butterworth for 1.6M, 2M/inner track only. • 1M/outer track f0 and the fc ratio for each mode can be customized. • Preamplifier voltage gain can be set to 45dB or 48dB by switching the filter mode and inner/outer track. • Preamplifier and filter output are monitored with the same pins. These pins are normally set to filter output, but the preamplifier output can be monitored by temporarily setting the SETR pin (Pin 20) to Low. • Time domain filter can be switched between two modes: 1M, 1.6M/2M. In addition, the pulse width can be customized. • Write current can be switched among six modes according to the mode and inner/outer track setting. The current value can be customized for each mode. • Erase current remains constant, and the current value can be customized. • Damping resistor can be built in. Resistor can be customized between 2kΩ and 15kΩ in 1kΩ steps. • Supply voltage detection circuit 20 pin SSOP (Plastic) Applications Three-mode FDDs Structure Bipolar silicon monolithic IC Absolute Maximum Ratings (Ta = 25°C) • Supply voltage VCC 7.0 V • Digital signal input pin voltage –0.5 to VCC + 0.3 V • Power ON output applied voltage VCC + 0.3 V • Erase output applied voltage VCC + 0.3 V • Write head applied voltage 15 V • Power ON output current 7 mA • Operating temperature Topr –20 to +75 °C • Storage temperature Tstg –65 to +150 °C • Allowable power dissipation PD 375 mW Operating Conditions Supply voltage 4.4 to 6.0 V Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits. –1– E96146B8Z CXA3071N SETR VCC X360 XHD OTF XS1 XEG WG RD XWD Block Diagram and Pin Configuration 20 19 18 17 16 15 14 13 12 11 WRITE DRIVER TIME DOMAIN FILTER CONTROL LOGIC COMP FILTER DIFF + LPF (BPF) PREAMP –2– HEAD1B HEAD0A HEAD0B GND 6 7 8 9 10 MONITORB 5 MONITORA 4 PONOUT 3 ERA1 2 POWER MONITOR ERA0 1 HEAD1A ERASE DRIVER CXA3071N Pin Description Pin No. Symbol Pin voltage 1 HEAD1A — Equivalent circuit 1 2 HEAD1B — 3 HEAD0A — 4 HEAD0B — 2 3 Description 4 Magnetic head inputs/outputs. Connect the recording/playback magnetic head to these pins, and connect the center tap to VCC. When the logical voltage for Pin 15 (XS1) is Low, the HEAD1 system is active; when the logical voltage is High, the HEAD0 system is active. GND 5 GND GND connection. — VCC 6 ERA0 — 6 Erase output for the HEAD0 system. 7 7 ERA1 — Erase output for the HEAD1 system. GND VCC 100k 100k 8 8 PON OUT — Reduced voltage detection output. This is an open collector that outputs a low signal when VCC is below the specified value. GND 9 MONITORA 4.0V during filter output 3.4V during preamplifier output VCC 500µ 500µ 9 10 4.0V during filter output 10 MONITORB GND 3.4V during preamplifier output –3– MONITOR differential outputs. These pins are set to filter output during normal read mode, but the preamplifier output can be monitored by temporarily setting Pin 20 (SETR) to Low. CXA3071N Pin No. Symbol Pin voltage Equivalent circuit Description VCC 11 XWD — Write data input. This pin is a Schmitttype input that is triggered when the logical voltage goes from High to Low. 1k 11 2.3V GND VCC 140 12 RD — Read data output. This pin is active when the logical voltage of the write gate signal and the erase gate signal is High. 12 GND VCC 13 WG 0.5VCC during read 0.5 VCC 13 0.35 VCC 147 0.65 VCC WG signal input. The write system becomes active when the logical voltage is High. The IC is in power saving mode when the logical voltage is Low. The read system becomes active when the logical voltage is Z. GND 14 15 XEG XS1 — XEG signal input. The erase system becomes active when the logical voltage is Low. — Head side switching signal input. The HEAD1 system is active when the logical voltage is Low, and the HEAD0 system is active when the logical voltage is High, but only when the logical voltage for the WG signal is Z and of the XEG signal is High. VCC 100k 14 15 1k 16 16 OTF — 17 2.1V 18 GND Filter inner track/outer track mode control. Outer track mode is selected when the logical voltage is High. Filter, time domain filter and write current 1M/2M mode control. 1.6M/2M mode is selected when the logical voltage is Low. 17 XHD — 18 X360 — Filter, time domain filter and write current 1.6M/2M mode control. 1.6M mode is selected when the logical voltage is Low. 19 VCC — Power supply (5V) connection. –4– CXA3071N Pin No. Symbol Pin voltage Equivalent circuit Description VCC 1.2V 20 147 20 SETR 3.8V GND –5– Filter cutoff frequency, time domain filter 1st monostable multivibrator pulse width, read data, write current and erase current setting resistor connection. Connect the setting resistor R between this pin and VCC. CXA3071N Electrical Characteristics Current Consumption Item (Ta = 25°C, VCC = 5V) Current consumption ICCR in read mode Measurement Measurement Min. Typ. Max. Unit circuit point Conditions Symbol WG = "Z" — — 15.0 25.0 35.0 mA Current consumption ICCWE WG = "H", XEG = "L" in write/erase mode — — 11.0 17.0 23.0 mA Current consumption in power saving ICCPS mode — — WG = "L" — 1.2 Power Supply Monitoring System Item Symbol Power supply ON/OFF detector threshold voltage VTH Power ON output saturation voltage VSP 2.0 mA (Ta = 25°C) Measurement Measurement Min. Typ. Max. Unit circuit point Conditions VCC = 3.5V I = 1mA — — 3.5 3.9 4.3 V — — — — 0.5 V Read System (Ta = 25°C, VCC = 5V) Measurement Measurement circuit point Item Symbol Conditions Preamplifier voltage gain 1M/outer track GVLO f = 100kHz, OTF = "H", XHD = "H", X360 = "X" 1 A, B 43.1 45.0 46.6 dB Preamplifier voltage gain 1M/inner track GVLI f = 100kHz, OTF = "L", XHD = "H", X360 = "X" 1 A, B 46.1 48.0 49.6 dB Preamplifier voltage gain 1.6M, 2M/ outer track GVHO f = 100kHz, OTF = "H", XHD = "L", X360 = "X" 1 A, B 43.1 45.0 46.6 dB Preamplifier voltage gain 1.6M, 2M/ inner track GVHI f = 100kHz, OTF = "L", XHD = "L", X360 = "X" 1 A, B 46.1 48.0 49.6 dB Preamplifier frequency response BWO GV/GV0 = –3dB 1 A, B 5 — — MHz Preamplifier input conversion noise voltage ENO BW = 400Hz to 1MHz, VI = 0 1 A, B — 2.0 2.9 nV/√ Hz –6– Min. Typ. Max. Unit CXA3071N Read System Item Filter output voltage amplitude (Ta = 25°C, VCC = 5V) Symbol — Vp-p A, B 1.4 X360 = "X", XHD = "H" (1M mode) 1 C, D 2.25 2.50 2.75 µs X360 = "X", XHD = "L" (1.6M/2M mode) 1 C, D 1.16 1.29 1.42 µs 1 D IOL = 2mA 1 D VOH IOH = –0.4mA 1 tr RL = 2kΩ CL = 20pF tf PS T1 Read data pulse width T2 Read data output low VOL output voltage Peak shift∗2 — 1 VOF Time domain filter monostable multivibrator pulse width Read data output high output voltage Read data output∗1 rise time Read data output∗1 fall time Measurement Measurement Min. Typ. Max. Unit circuit point Conditions 300 400 500 ns — — 0.5 V D 2.8 — — V 1 D — — 100 ns RL = 2kΩ CL = 20pF 1 D — — 100 ns VI = 0.25mVp-p to 3.5mVp-p X360 = "H", XHD = "L" OTF = "L" f = 125kHz, 2M/inner track mode 1 D — — 1 % ∗1 Read data output: 0.5V to 2.4V ∗2 Signal input level 1M, 1.6M, 2M/outer track: VI = 0.25mVp-p to 5mVp-p 1M, 1.6M, 2M/inner track: VI = 0.25mVp-p to 3.5mVp-p –7– CXA3071N External Comparator Output (Measurement point C) Read data output (Measurement point D) 1.4V T1 T2 TA TB Fig. 1. 1st and 2nd monostable multivibrator pulse width precision and peak shift measurement conditions • 1st monostable multivibrator pulse width precision When X360 = "X" and XHD = "H": ETM1 = ( T1 –1) × 100 [%] 2.5µs When X360 = "X" and XHD = "L": ETM1' = ( T1 –1) × 100 [%] 1.29µs • 2nd monostable multivibrator pulse width = T2 • Peak shift PS = 1 2 TA – TB TA + TB × 100 [%] –8– CXA3071N Read System (Filters) Item 1M outer track 1M inner track 1.6M/ 2M outer track 1.6M/ 2M inner track (Ta = 25°C, VCC = 5V) Symbol Peak frequency fo1 Peak voltage gain∗3 Gp1 Frequency response (1) G11 Frequency response (2) Measurement Measurement circuit point Conditions WG = "Z", X360 = "X" XHD = "H" OTF = "H" Min. Typ. Max. Unit 1 A, B 1 A, B 4.1 6.0 7.6 dB Refer to Fig. 1 at 1/3f01 1 A, B –7.4 –6.9 –6.4 dB G12 Refer to Fig. 1 at 3f01 1 A, B –24.9 –23.0 –21.4 dB Peak frequency fo2 WG = "Z", X360 = "X" XHD = "H" OTF = "L" 1 A, B 177.2 196.9 216.6 kHz Peak voltage gain∗3 Gp2 1 A, B 4.1 6.0 7.6 dB Frequency response (1) G21 Refer to Fig. 1 at 1/3f02 1 A, B –7.4 –6.9 –6.4 dB Frequency response (2) G22 Refer to Fig. 1 at 3f02 1 A, B –24.9 –23.0 –21.4 dB Peak frequency fo3 WG = "Z", X360 = "X" XHD = "L" OTF = "H" 1 A, B 311.3 345.9 380.5 kHz Peak voltage gain∗3 Gp3 1 A, B 4.2 6.1 7.7 dB Frequency response (1) G31 Refer to Fig. 1 at 1/3f03 1 A, B –7.4 –6.9 –6.4 dB Frequency response (2) G32 Refer to Fig. 1 at 3f03 1 A, B –25.3 –23.4 –21.8 dB Peak frequency fo4 WG = "Z", X360 = "X" XHD = "L" OTF = "L" 1 A, B 346.2 384.6 423.0 kHz Peak voltage gain∗3 Gp4 1 A, B 5.8 7.7 9.3 dB Frequency response (1) G41 Refer to Fig. 1 at 1/3f04 1 A, B –8.3 –7.8 –7.3 dB Frequency response (2) G42 Refer to Fig. 1 at 3f04 1 A, B –37.8 –35.9 –34.3 dB Refer to Fig. 1 at f01 Refer to Fig. 1 at f02 Refer to Fig. 1 at f03 Refer to Fig. 1 at f04 ∗3 Gpn = 20 Log10 (VFilterout/VPreout) VFilterout = Filter differential output voltage (N = 1 to 4). –9– 165.6 184.0 202.4 kHz CXA3071N [dB] Gpn Gn1 Gn2 1/3fon fon 3fon f [Hz] (n = 1 to 4) Fig. 2. Filter frequency response measurement conditions Write/Erase System Item (Ta = 25°C, VCC = 5V) Symbol Measurement Measurement Min. Typ. Max. circuit point Conditions 2 A', B' C', D' –20 1M/outer track write WG = "H", OTF = "H" IWLO current XHD = "H", X360 = "X" 2 A, B C, D 8.83 9.5 10.17 mA0-p 1M/inner track write IWLI current WG = "H", OTF = "L" XHD = "H", X360 = "X" 2 A, B C, D 6.62 7.12 7.62 mA0-p 1.6M/outer track write current IWMO WG = "H", OTF = "H" XHD = "L", X360 = "L" 2 A, B C, D 7.44 8.0 8.56 mA0-p 1.6M/inner track write current IWMI WG = "H", OTF = "L" XHD = "L", X360 = "L" 2 A, B C, D 5.95 6.4 6.85 mA0-p 2M/outer track write WG = "H", OTF = "H" IWHO current XHD = "L", X360 = "H" 2 A, B C, D 4.18 4.5 4.82 mA0-p 2M/inner track write IWHI current WG = "H", OTF = "L" XHD = "L", X360 = "H" 2 A, B C, D 2.76 2.97 3.18 mA0-p Write current output DW unbalance WG = "H" 2 A, B C, D –1 — +1 % Head I/O pin leak current for writes WG = "H" 2 A, B C, D — — 10 µA Write head pin ISW current at saturation WG = "H", OTF = "H" XHD = "H", X360 = "X" VSW = 1V, SW2 = b 2 A, B C, D 8.45 9.5 10.55 mA0-p Erase current XEG = "L" 2 E, F 5.40 6.0 6.60 XEG = "L" 2 E, F Damping resistor precision RD ILKW IE Erase current output ILKE pin leak current VCC = 0V SW1 = b Unit – 10 – — — — +20 10 % mA µA CXA3071N Logic Input Block Item (Ta = 25°C, VCC = 5V) Symbol Conditions Measurement Measurement circuit point Min. Typ. Max. Unit Digital signal input low input voltage VLD 2 I, J, K, L, M — — 0.8 V Digital signal input high input voltage VHD 2 I, J, K, L, M 2.0 — — V Schmitt-type digital signal input low input VLSD voltage 2 G — — 0.8 V Schmitt-type digital signal input high input voltage VHSD 2 G 2.0 — — V WG pin digital signal input high input voltage VMHD 2 H 0.7VCC — — V WG pin digital signal input low input voltage VMLD 2 H — — 0.3VCC V Digital signal input low input current ILD VL = 0V 2 G, H, I, J, K, L, M –100 — — µA Digital signal input high input current IHD VH = 5V 2 G, H, I, J, K, L, M — — 100 µA – 11 – CXA3071N Electrical Characteristics Measurement Circuit 1 D 5V b 10kΩ 19 SW1 a b ab SW5 SW4 SW3 18 17 SW2 OTF XS1 XEG WG RD GND ERA0 ERA1 PONOUT MONITORA MONITORB 1 2 3 4 5 6 7 8 9 10 b a 1 Vi 2 b XWD XHD HEAD0B 11 X360 12 HEAD0A 13 VCC 14 HEAD1B 15 SETR 16 a HEAD1A 20 a b 3300p a 12k – 1 Vi 2 C 3300p External Comparator A B 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. – 12 – CXA3071N Electrical Characteristics Measurement Circuit 2 M L K J I H 18 17 16 15 14 13 G 5V SW1 a XHD OTF XS1 XEG HEAD0B GND ERA0 ERA1 PONOUT MONITORA MONITORB 3 4 5 6 7 8 9 10 b a b a B' B b a C' C b D' D SW2 a b VSW E F Note) Unless otherwise specified, switches are assumed to be set to "a". – 13 – XWD X360 HEAD0A 2 RD VCC HEAD1B 11 1 A' A 12 SETR 19 HEAD1A 20 WG 10k CXA3071N Description of Operation (1) Read system Preamplifier The preamplifier amplifies input signals. The voltage gain can be switched depending on the settings of Pins 16, 17 and 18. Filter The filter differentiates the signals amplified by the preamplifier. The high-band noise components are attenuated by the low-pass filter. The filters can be switched among four modes, depending on the settings of Pins 16, 17 and 18. In 1M/outer track mode, the peak frequency f01 is fixed and used as a reference (1.00), and f0 for the other three modes is switched by the internal settings of the IC. Active filter block Preamplifier output BPF LPF Secondary fOB = 1.2 × fC Q = 0.577 Tertiary fc: variable Primary fCH = 5kHz 9 MONITORA 10 MONITORB Amp HPF Gain: 8dB Filter block The center frequency f0B of the BPF is fixed to 1.2 times the cutoff frequency f0 of the LPF. The LPF characteristics are set to Chebyshev (1dB ripple) for 1.6M, 2M/inner track mode only, and the Butterworth for all other modes. Pin16 OTF Pin17 XHD Pin18 X360 H H X 1M/outer track: Butterworth 1.00 L H X 1M/inner track: Butterworth 1.07 H L L 1.6M/outer track: Butterworth 1.88 L L L 1.6M/inner track: Chebyshev 1dB ripple 2.09 H L H 2M/outer track: Butterworth 1.88 L L H 2M/inner track: Chebyshev 1dB ripple 2.09 LPF characteristics – 14 – f0 ratio CXA3071N Monitor switching VCC refR 20 SETR "L" pulse REF AMP SW switching signal LATCH TDF FILTER PREAMP COMP FILA 9 PREA MONITORA FILB 10 PREB SW MONITORB Monitor block configuration The monitor pins are used for both the preamplifier output and filter output. These pins are set to filter output during normal read mode, but the preamplifier output can be monitored by temporarily setting the SETR pin (Pin 20) to Low. The monitored contents are returned from the preamplifier output to the filter output by switching to write mode (WG = Z → High). Note that the specifications for inputting a low signal to the SETR pin are the same as for the TTL input pin, but an open collector output (or open drain output) should be used while inputting the signal. SETR (Pin 20) MONITORA (Pin 9) MONITORB (Pin 10) Monitor mode Z FILOUTA FILOUTB Filter output PREOUTA PREOUTB Preamplifier output – 15 – CXA3071N Comparator The comparator detects the crosspoint of the filter differential output. Time domain filter The time domain filter converts the comparator output to read data. This filter is equipped with two monostable multivibrators. 1st monostable multivibrator eliminates unnecessary pulses, and 2nd monostable multivibrator determines the pulse width of the read data. Note that the 1st monostable multivibrator pulse width T1 is fixed internally. T1 can be switched as follows by the settings of Pins 17 and 18: When XHD = "H" and X360 = "X": T1 (1M) = 2500 [ns] When XHD = "L" and X360 = "L" or XHD = "L" and X360 = "H": T1(1.6M/2M) = 1290 [ns] The pulse width for 2nd monostable multivibrator is fixed at 400 [ns]. (2) Write system Write data input through Pin 11 is frequency-divided by the T flip-flop and generates the recording current for the head. The recording current can be switched by the settings of Pins 17 and 18. Note that the write current IW is fixed internally for each mode. Furthermore, the inner/outer track write current IW can be changed for each mode by switching Pin 16. However, the current ratio between the inner and outer tracks is fixed. (3) Erase current The erase current IE is fixed internally. Pins 6 and 7 are constant current outputs. (4) Power ON/OFF detection system The power ON/OFF detection system detects a reduced voltage in the supply voltage. When VCC is below the specified value, the write system and erase system cease operation, disabling the write and erase functions. Notes on Operation • Select the voltage gain so that the preamplifier output amplitude is 1Vp-p or less. 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 VCC decoupling capacitor of about 0.1µF as close to the device as possible. – 16 – CXA3071N Application Circuit 17 WRITE DRIVER 16 XWD WG RD 12 11 9 10 COMP 7 8 MONITORB 6 MONITORA POWER MONITOR ERA0 GND 5 4 HEAD0B HEAD0A HEAD1B HEAD1A 3 13 FILTER DIFF + LPF (BPF) ERASE DRIVER 2 14 TIME DOMAIN FILTER CONTROL LOGIC PREAMP 1 XEG XS1 15 PONOUT 18 OTF XHD X360 19 ERA1 20 VCC SETR 10kΩ VCC Note) When using two modes (1M and 2M), connect X360 (Pin 18) to VCC and set XHD (Pin 17) high or low to switch modes. Application circuits shown are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same. – 17 – CXA3071N Filter Frequency Response The LPF characteristics are set to Chebyshev (1dB ripple) for 1.6M, 2M/inner track mode only, and to Butterworth for other modes. The 1.6M and 2M characteristics and fc ratio are identical. B.P.F Q = 0.577 (Differential characteristics) fOB 1M/outer track, inner track 1.6M, 2M/outer track 1.6M, 2M/inner track L.P.F L.P.F Tertiary Butterworth Tertiary Chebyshev 1dBRp fcn (High-band noise cutoff) fc4 (n = 1, 2, 3) (Comprehensive characteristics) fo4 fon The BPF center frequency f0B is fixed at 1.2 times the LPF cutoff frequency. f0B = 1.2fc In the comprehensive characteristics, the relationship between the peak frequencies f0 and fc is as follows, depending on the differences of the LPF type: Butterworth characteristics fcn = 1.28f0n (n = 1, 2, 3) Chebyshev (1dB ripple characteristics) fC4 = 1.09f04 – 18 – CXA3071N Custom Selection of Filters The LPF cutoff frequency fc in 1M/outer track mode can be customized. In addition, assuming the LPF cutoff frequency value as 1.00, the fc ratio can be selected for the other three modes. In addition, the LPF characteristics are set to Chebyshev (1dB ripple) for 1.6M, 2M/inner track mode only, and to Butterworth for the other modes. However, a custom selection can be made between Chebyshev (1dB ripple) and Butterworth for 1.6M, 2M/inner track mode only. (However, the 1.6M and 2M characteristics and fc ratio are identical.) Note that the BPF center frequency f0B is fixed at 1.2 times fc. Mode LPF type 1M/outer track Butterworth 1.0 1M/inner track Butterworth 1.07 , 1.14, 1.23, 1.33, 1.45, 1.60, 2.00 1.6M, 2M/outer track Butterworth 1.23, 1.33, 1.39, 1.45, 1.52, 1.60, 1.68, 1.78, 1.88 , 2.00, 2.13, 2.29, 2.46, 2.67 1.6M, 2M/inner track Butterworth Chebyshev (1dB ripple) 1.23, 1.33, 1.39, 1.45, 1.52, 1.60, 1.68, 1.78 , 1.88, 2.00, 2.13, 2.29, 2.46, 2.67 fc ratio when fC1 is assumed as 1 ∗ 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. The setting is for the outer track current when OTF is High, and for the inner track current when OTF is Low. Track Write current inner track setting ratio 1M mode 1.00, 0.92, 0.86, 0.80, 0.75 , 0.71, 0.66, 0.63 1.6M mode 1.00, 0.92, 0.86, 0.80 , 0.75, 0.71, 0.66, 0.63 2M mode 1.00, 0.92, 0.86, 0.80 , 0.75, 0.71, 0.66 , 0.63 ∗ The boxed ratio indicates the setting for the CXA3071N. – 19 – CXA3071N Example of Representative Characteristics 180 Voltage gain 0 90 Phase [deg] Normalized preamplifier voltage gain [dB] Normalized preamplifier voltage gain and phase vs. Frequency –4 0 Phase –8 –90 –12 VCC = 5V, Ta = 25°C –180 –16 100k 1M 10M f — Frequency [Hz] 1M/outer track 1M/inner track 20 20 Phase 180 Voltage gain 90 –20 0 –40 –90 –60 VCC = 5V, Ta = 25°C R = 10kΩ 40k 100k Voltage gain –20 0 –40 –90 –60 VCC = 5V, Ta = 25°C R = 10kΩ –180 1M 400k –80 10k 4M f01 = 184.0 [kHz] Frequency [Hz] 40k 100k –180 400k 1M 4M f02 = 196.9 [kHz] Frequency [Hz] 1.6M, 2M/inner track 1.6M, 2M/outer track 20 90 20 Phase 180 Voltage gain 90 –20 0 –40 –90 –60 VCC = 5V, Ta = 25°C R = 10kΩ –80 10k 40k 100k Normalized filter voltage gain [dB] 0 Phase [deg] Normalized filter voltage gain [dB] 180 0 Voltage gain –20 0 –40 –90 –60 VCC = 5V, Ta = 25°C R = 10kΩ –180 400k 1M 90 Phase –80 10k 4M 40k 100k –180 400k f04 = 384.6 [kHz] Frequency [Hz] f03 = 345.9 [kHz] Frequency [Hz] – 20 – 1M 4M Phase [deg] –80 10k 0 Phase [deg] 0 Normalized filter voltage gain [dB] 180 Phase [deg] Normalized filter voltage gain [dB] Phase Normalized preamplifier voltage gain + filter voltage gain NGv vs. Ambient temperature Ta 1.50 1.00 20 VCC = 5V f = 100kHz NGV = GV/GV (Ta = 25°C) 10kΩ VCC 0.50 –20 0 20 40 60 Ta — Ambient temperature [°C] 80 NGv — Normalized preamplifier voltage gain + filter voltage gain NGv — Normalized preamplifier voltage gain + filter voltage gain CXA3071N Normalized preamplifier voltage gain + filter voltage gain NGv vs. Supply voltage Vcc 1.50 1.00 20 Ta = 25°C f = 100kHz NGV = GV/GV (VCC = 5V) VCC 0.50 4.0 6.0 Normalized filter peak frequency NfO vs. Supply voltage Vcc 1.05 NfO — Normalized filter peak frequency 1.05 NfO — Normalized filter peak frequency 5.0 Vcc — Supply voltage [V] Normalized filter peak frequency NfO vs. Ambient temperature Ta 1.00 20 VCC = 5V Nf0 = f0/f0 (Ta = 25°C) 0.95 –20 10kΩ 20 20 Ta = 25°C Nf0 = f0/f0 (VCC = 5V) 0.95 40 60 4.0 80 1.00 20 10kΩ VCC 0 20 40 60 Ta — Ambient temperature [°C] 80 NT1 — Normalized 1st monostable multivibrator pulse width 1.05 0.95 –20 5.0 6.0 Vcc — Supply voltage [V] Normalized 1st monostable multivibrator pulse width NT1 vs. Ambient temperature Ta VCC = 5V NTA = T1/T1 (Ta = 25°C) 10kΩ VCC VCC 0 1.00 Ta — Ambient temperature [°C] NT1 — Normalized 1st monostable multivibrator pulse width 10kΩ – 21 – Normalized 1st monostable multivibrator pulse width NT1 vs. Supply voltage Vcc 1.05 1.00 20 Ta = 25°C NTA = T1/T1 (VCC = 5V) 10kΩ VCC 0.95 4.0 5.0 Vcc — Supply voltage [V] 6.0 CXA3071N Normalized read data pulse width NT2 vs. Ambient temperature Ta Normalized read data pulse width NT2 vs. Supply voltage Vcc 1.05 NT2 — Normalized read data pulse width NT2 — Normalized read data pulse width 1.05 1.00 20 VCC = 5V NTB = T2/T2 (Ta = 25°C) 0.95 –20 10kΩ VCC 0 20 40 60 20 Ta = 25°C NTB = T2/T2 (VCC = 5V) VCC 80 4.0 5.0 Vcc — Supply voltage [V] Normalized write current NIw vs. Ambient temperature Ta Normalized write current NIw vs. Supply voltage Vcc NIw — Normalized write current 1.05 20 VCC = 5V NIW = IW/IW (Ta = 25°C) 10kΩ 1.00 20 Ta = 25°C NIW = IW/IW (VCC = 5V) 0.95 0 20 40 60 Ta — Ambient temperature [°C] 80 4.0 5.0 6.0 Vcc — Supply voltage [V] Normalized erase current NIE vs. Ambient temperature Ta Normalized erase current NIE vs. Supply voltage Vcc 1.05 1.05 NIE — Normalized erase current NIE — Normalized erase current 10kΩ VCC VCC 1.00 20 VCC = 5V NIE = IE/IE (Ta = 25°C) 10kΩ 1.00 20 Ta = 25°C NIE = IE/IE (VCC = 5V) 10kΩ VCC VCC 0.95 –20 6.0 Ta — Ambient temperature [°C] 1.00 0.95 –20 10kΩ 0.95 1.05 NIw — Normalized write current 1.00 0.95 0 20 40 60 80 4.0 Ta — Ambient temperature [°C] 5.0 Vcc — Supply voltage [V] – 22 – 6.0 VTH — Power supply ON/OFF detector threshold voltage [V] CXA3071N Power supply ON/OFF detector threshold voltage VTH vs. Ambient temperature Ta 4.1 4.0 3.9 3.8 3.7 3.6 –20 0 20 40 60 Ta — Ambient temperature [°C] – 23 – 80 CXA3071N Package Outline Unit: mm 20PIN SSOP (PLASTIC) + 0.2 1.25 – 0.1 ∗6.5 ± 0.1 0.1 20 11 1 6.4 ± 0.2 ∗4.4 ± 0.1 A 10 + 0.1 0.22 – 0.05 + 0.05 0.15 – 0.02 0.65 ± 0.12 0.5 ± 0.2 0.1 ± 0.1 0° to 10° DETAIL A NOTE: Dimension “∗” does not include mold protrusion. PACKAGE STRUCTURE PACKAGE MATERIAL EPOXY RESIN SONY CODE SSOP-20P-L01 LEAD TREATMENT SOLDER / PALLADIUM PLATING EIAJ CODE SSOP020-P-0044 LEAD MATERIAL COPPER / 42 ALLOY PACKAGE WEIGHT 0.1g JEDEC CODE NOTE : PALLADIUM PLATING This product uses S-PdPPF (Sony Spec.-Palladium Pre-Plated Lead Frame). – 24 –