Datasheet CXA3071N Datasheet (Sony)

– 1 –

CXA3071N

E96146B8Z

Read/Write Amplifier (with Built-in Filters) for FDDs

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

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.

20 pin SSOP (Plastic)

For the availability of this product, please contact the sales office.

– 2 –

CXA3071N

Block Diagram and Pin Configuration

WRITE

DRIVER

COMP

PREAMP

CONTROL

LOGIC

TIME

DOMAIN

FILTER

DIFF + LPF

(BPF)

POWER

MONITOR

ERASE

DRIVER

2

3

4

5

6

7

8

9

10

1

11

12

13

14

15

16

17

18

19

20

HEAD1A

HEAD1B

HEAD0A

HEAD0B

GND

ERA0

ERA1

PONOUT

MONITORA

MONITORB

SETR

V

CC

X360

XHD

OTF

XS1

XEG

WG

RD

XWD

– 3 –

CXA3071N

Pin Description

Pin No.

Symbol

Pin voltage

Equivalent circuit Description

1

2

3

4

HEAD1A

HEAD1B

HEAD0A

HEAD0B

—

Magnetic head inputs/outputs. Connect the recording/playback magnetic head to these pins, and connect the center tap to V

CC. 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

2

3

4

1

5

GND —

GND connection.

6 ERA0

—

7

ERA1

—

8

9

10

PON OUT

—

MONITORA

4.0V during filter output

3.4V during preamplifier output

4.0V during filter output

3.4V during preamplifier output

MONITORB

Erase output for the HEAD0 system.

Erase output for the HEAD1 system.

Reduced voltage detection output. This is an open collector that outputs a low signal when VCC is below the specified value.

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.

VCC

GND

6 7

VCC

GND

8

100k 100k

500µ500µ

9

10

V

CC

GND

– 4 –

CXA3071N

11 XWD —

Write data input. This pin is a Schmitttype input that is triggered when the logical voltage goes from High to Low.

VCC

1k

GND

2.3V

11

140

V

CC

GND

12

GND

0.65 V

CC

0.35 VCC

13

147

VCC

0.5 VCC

VCC

100k

1k

GND

2.1V

14 15 16

17 18

12

13RDWG

—

0.5VCC during read

Read data output. This pin is active when the logical voltage of the write gate signal and the erase gate signal is High.

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.

14

XEG

—

XEG signal input. The erase system becomes active when the logical voltage is Low.

15

XS1

—

16

OTF

—

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.

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

18

19

XHD

X360

VCC

—

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.

Pin No.

Symbol

Pin voltage

Equivalent circuit Description

– 5 –

CXA3071N

3.8V

20 SETR

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.

Pin No.

Symbol

Pin voltage

Equivalent circuit Description

147

VCC

20

1.2V

GND

– 6 –

CXA3071N

Electrical Characteristics

Current Consumption (Ta = 25°C, VCC = 5V)

Current consumption in read mode

Current consumption in write/erase mode

Current consumption in power saving mode

ICCR

ICCWE

ICCPS

WG = "Z"

WG = "H", XEG = "L"

WG = "L"

—

15.0

11.0

—

25.0

17.0

1.2

35.0

23.0

2.0

mA

Power Supply Monitoring System (Ta = 25°C)

Power supply ON/OFF detector threshold voltage

Power ON output saturation voltage

VTH

VSP

VCC = 3.5V I = 1mA

—

3.5—3.9—4.3

0.5VV

Read System (Ta = 25°C, VCC = 5V)

Preamplifier voltage gain 1M/outer track

Preamplifier voltage gain 1M/inner track

Preamplifier voltage gain

1.6M, 2M/ outer track

Preamplifier voltage gain

1.6M, 2M/ inner track

Preamplifier frequency response

Preamplifier input conversion noise voltage

GVLO

GVLI

GVHO

GVHI

BWO

ENO

f = 100kHz, OTF = "H", XHD = "H", X360 = "X"

f = 100kHz, OTF = "L", XHD = "H", X360 = "X"

f = 100kHz, OTF = "H", XHD = "L", X360 = "X"

f = 100kHz, OTF = "L", XHD = "L", X360 = "X"

GV/GV0 = –3dB

BW = 400Hz to 1MHz, VI = 0

1

A, B

43.1

46.1

43.1

46.1

5

—

45.0

48.0

45.0

48.0

—

2.0

46.6

49.6

46.6

49.6

—

2.9

dB

MHz

nV/√Hz

Item Symbol

Conditions

Measurement circuit

Measurement point

Min. Typ. Max. Unit

Item Symbol

Conditions

Measurement circuit

Measurement point

Min. Typ. Max. Unit

Item Symbol

Conditions

Measurement circuit

Measurement point

Min. Typ. Max. Unit

– 7 –

CXA3071N

Read System (Ta = 25°C, VCC = 5V)

Filter output voltage amplitude

Time domain filter monostable multivibrator pulse width

Read data pulse width

Read data output low output voltage

Read data output high output voltage

Read data output

∗1

rise time Read data output

∗1

fall time

Peak shift

∗2

VOF

T1

T2

VOL

VOH

tr

tf

PS

X360 = "X", XHD = "H" (1M mode)

X360 = "X", XHD = "L" (1.6M/2M mode)

IOL = 2mA

IOH = –0.4mA RL = 2kΩ

CL = 20pF RL = 2kΩ

CL = 20pF VI = 0.25mVp-p to

3.5mVp-p X360 = "H", XHD = "L" OTF = "L" f = 125kHz, 2M/inner track mode

1

A, B

C, D

D

1.4

2.25

1.16

300

—

2.8

—

2.50

1.29

400

—

2.75

1.42

500

0.5

—

100

1

Vp-p

µs

ns

V

ns

%

∗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

Item Symbol Conditions

Measurement circuit

Measurement point

Min. Typ. Max. Unit

– 8 –

CXA3071N

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 = ( –1) × 100 [%]

When X360 = "X" and XHD = "L":

ETM1' = ( –1) × 100 [%]

• 2nd monostable multivibrator pulse width = T2

• Peak shift

PS = × 100 [%]

T1

2.5µs

12TA – TB

TA + TB

T1

1.29µs

External Comparator Output

(Measurement point C)

T1 T2

TA TB

1.4V

Read data output

(Measurement point D)

– 9 –

CXA3071N

∗3

Gpn = 20 Log10 (VFilterout/VPreout) VFilterout = Filter differential output voltage (N = 1 to 4).

Read System (Filters) (Ta = 25°C, VCC = 5V)

Peak frequency

Peak voltage gain

∗3

Frequency response (1)

Frequency response (2)

Peak frequency

Peak voltage gain

∗3

Frequency response (1)

Frequency response (2)

Peak frequency

Peak voltage gain

∗3

Frequency response (1)

Frequency response (2)

Peak frequency

Peak voltage gain

∗3

Frequency response (1)

Frequency response (2)

fo1

Gp1

G11

G12

fo2

Gp2

G21

G22

fo3

Gp3

G31

G32

fo4

Gp4

G41

G42

1M outer track

1M inner track

1.6M/ 2M outer track

1.6M/ 2M inner track

WG = "Z", X360 = "X" XHD = "H" OTF = "H"

Refer to Fig. 1

at f01

Refer to Fig. 1

at 1/3f01

Refer to Fig. 1

at 3f01 WG = "Z", X360 = "X"

XHD = "H" OTF = "L"

Refer to Fig. 1

at f02

Refer to Fig. 1

at 1/3f02

Refer to Fig. 1

at 3f02 WG = "Z", X360 = "X"

XHD = "L" OTF = "H"

Refer to Fig. 1

at f03

Refer to Fig. 1

at 1/3f03

Refer to Fig. 1

at 3f03 WG = "Z", X360 = "X"

XHD = "L" OTF = "L"

Refer to Fig. 1

at f04

Refer to Fig. 1

at 1/3f04

Refer to Fig. 1

at 3f04

1

A, B

165.6

4.1

–7.4

–24.9

177.2

4.1

–7.4

–24.9

311.3

4.2

–7.4

–25.3

346.2

5.8

–8.3

–37.8

184.0

6.0

–6.9

–23.0

196.9

6.0

–6.9

–23.0

345.9

6.1

–6.9

–23.4

384.6

7.7

–7.8

–35.9

202.4

7.6

–6.4

–21.4

216.6

7.6

–6.4

–21.4

380.5

7.7

–6.4

–21.8

423.0

9.3

–7.3

–34.3

kHz

dB

kHz

dB

kHz

dB

kHz

dB

Item Symbol Conditions

Measurement circuit

Measurement point

Min. Typ. Max. Unit

– 10 –

CXA3071N

Write/Erase System (Ta = 25°C, VCC = 5V)

Damping resistor precision

1M/outer track write current

1M/inner track write current

1.6M/outer track write current

1.6M/inner track write current

2M/outer track write current

2M/inner track write current

Write current output unbalance

Head I/O pin leak current for writes

Write head pin current at saturation

Erase current Erase current output

pin leak current

RD

IWLO

IWLI

IWMO

IWMI

IWHO

IWHI

DW

ILKW

ISW

IE ILKE

VCC = 0V SW1 = b

WG = "H", OTF = "H" XHD = "H", X360 = "X"

WG = "H", OTF = "L" XHD = "H", X360 = "X"

WG = "H", OTF = "H" XHD = "L", X360 = "L"

WG = "H", OTF = "L" XHD = "L", X360 = "L"

WG = "H", OTF = "H" XHD = "L", X360 = "H"

WG = "H", OTF = "L" XHD = "L", X360 = "H"

WG = "H"

WG = "H" WG = "H", OTF = "H"

XHD = "H", X360 = "X" VSW = 1V, SW2 = b

XEG = "L" XEG = "L"

2

2 2

A', B' C', D'

A, B C, D

E, F E, F

–20

8.83

6.62

7.44

5.95

4.18

2.76

–1

—

8.45

5.40 —

—

9.5

7.12

8.0

6.4

4.5

2.97

—

9.5

6.0 —

+20

10.17

7.62

8.56

6.85

4.82

3.18

+1

10

10.55

6.60 10

%

mA0-p

%

µA

mA0-p

mA

µA

Gn1

Gn2

f [Hz]

3fonfon1/3fon

[dB]

Gpn

(n = 1 to 4)

Fig. 2. Filter frequency response measurement conditions

Item Symbol Conditions

Measurement circuit

Measurement point

Min. Typ. Max. Unit

– 11 –

CXA3071N

Logic Input Block (Ta = 25°C, VCC = 5V)

Item Symbol Conditions

Measurement circuit

Measurement point

Min. Typ. Max. Unit

Digital signal input low input voltage

Digital signal input high input voltage

Schmitt-type digital signal input low input voltage

Schmitt-type digital signal input high input voltage

WG pin digital signal input high input voltage

WG pin digital signal input low input voltage

Digital signal input low input current

Digital signal input high input current

VLD

VHD

VLSD

VHSD

VMHD

VMLD

ILD

IHD

VL = 0V

VH = 5V

2

I, J, K, L, M

G

H

G, H, I, J, K, L, M

—

2.0

—

2.0

0.7VCC

—

–100

—

0.8

—

0.8

—

0.3VCC

—

100

V

µA

– 12 –

CXA3071N

Electrical Characteristics Measurement Circuit 1

C

3300p

12k

B

A

abab

Vi

1 2

– Vi

1 2

SW1

10kΩ

D

ab

SW5

5V

ab

SW4abSW3abSW2

2

3

4

5

6

7

8

9

10

1

11

12

13

14

15

16

17

18

19

20

HEAD1A

HEAD1B

HEAD0A

HEAD0B

GND

ERA0

ERA1

PONOUT

MONITORA

MONITORB

SETR

V

CC

X360

XHD

OTF

XS1

XEG

WG

RD

XWD

External Comparator

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.

– 13 –

CXA3071N

Electrical Characteristics Measurement Circuit 2

FE

a b

SW1

10k

G

5V

H

I

J

K

LM

VSW

a b a b a b

A' B' C' D'

B C D

A

SW2

2

3

4

5

6

7

8

9

10

1

11

12

13

14

15

16

17

18

19

20

HEAD1A

HEAD1B

HEAD0A

HEAD0B

GND

ERA0

ERA1

PONOUT

MONITORA

MONITORB

SETR

V

CC

X360

XHD

OTF

XS1

XEG

WG

RD

XWD

a b

Note) Unless otherwise specified, switches are assumed to be set to "a".

– 14 –

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

BPF

LPF HPF

Preamplifier output

MONITORA

MONITORB

Secondary f

OB = 1.2 × fC

Q = 0.577

Tertiary

fc: variable

Primary

fCH = 5kHz

Gain: 8dB

Amp

9

10

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

LPF characteristics

f0 ratio

H

L

H

L

H

L

H H

L L L L

X X L

L H H

1M/outer track: Butterworth 1M/inner track: Butterworth

1.6M/outer track: Butterworth

1.6M/inner track: Chebyshev 1dB ripple 2M/outer track: Butterworth 2M/inner track: Chebyshev 1dB ripple

1.00

1.07

1.88

2.09

1.88

2.09

– 15 –

CXA3071N

Monitor switching

20

LATCH

FILTER

COMP

TDF

PREAMP

9

10

FILA

MONITORA

PREA

FILB

PREB

MONITORB

SW switching signal

"L" pulse

SETR

REF AMP

refR

V

CC

SW

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)

Z

MONITORA (Pin 9)

FILOUTA

PREOUTA

MONITORB (Pin 10)

FILOUTB

PREOUTB

Monitor mode

Filter output

Preamplifier output

Monitor block configuration

– 16 –

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.

– 17 –

CXA3071N

Application Circuit

HEAD1A

HEAD1B

HEAD0A

HEAD0B

GND

ERA0

ERA1

PONOUT

MONITORA

MONITORB

SETR

V

CC

X360

XHD

OTF

XS1

XEG

WG

RD

XWD

WRITE

DRIVER

PREAMP

CONTROL

LOGIC

TIME

DOMAIN

FILTER

DIFF + LPF

(BPF)

POWER

MONITOR

ERASE

DRIVER

2

3

4

5

6

7

8

9

10

1

11

12

13

14

15

16

17

18

19

20

10kΩ

VCC

COMP

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.

– 18 –

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.

fon

(Differential characteristics)

f

OB

B.P.F Q = 0.577

fcn

(Comprehensive characteristics)

(High-band noise cutoff)

L.P.F

Tertiary Butterworth

L.P.F

Tertiary Chebyshev

1dBRp

(n = 1, 2, 3)

fc4

fo4

1M/outer track, inner track

1.6M, 2M/outer track

1.6M, 2M/inner track

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

– 19 –

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.

1.0

1.07 , 1.14, 1.23, 1.33, 1.45, 1.60, 2.00

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

1.23, 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

Butterworth Butterworth

Chebyshev (1dB ripple)

1M/outer track 1M/inner track

1.6M, 2M/outer track

1.6M, 2M/inner track

Mode LPF type

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.

1.00, 0.92, 0.86, 0.80, 0.75 , 0.71, 0.66, 0.63

1.00, 0.92, 0.86, 0.80 , 0.75, 0.71, 0.66, 0.63

1.00, 0.92, 0.86, 0.80 , 0.75, 0.71, 0.66 , 0.63

1M mode

1.6M mode 2M mode

Track

Write current inner track setting ratio

∗

The boxed ratio indicates the setting for the CXA3071N.

– 20 –

CXA3071N

Normalized preamplifier voltage gain and phase vs. Frequency

f — Frequency [Hz]

100k 10M1M

Normalized preamplifier voltage gain [dB]

0

–16

–12

–8

–4

Phase [deg]

–180

–90

0

90

180

VCC = 5V, Ta = 25°C

Voltage gain

Phase

Frequency [Hz]

1M/outer track

10k 4M1M

Normalized filter voltage gain [dB]

–80

40k 100k 400k

f

01 = 184.0 [kHz]

Phase [deg]

180

90

0

–90

–180

VCC = 5V, Ta = 25°C R = 10kΩ

Voltage gain

Phase

0

–60

–40

–20

20

1M/inner track

10k 4M1M

Normalized filter voltage gain [dB]

0

–80

–60

–40

–20

40k 100k 400k

Phase [deg]

180

90

0

–90

–180

Frequency [Hz]

VCC = 5V, Ta = 25°C R = 10kΩ

Voltage gain

Phase

f02 = 196.9 [kHz]

20

1.6M, 2M/outer track

10k 4M1M

Normalized filter voltage gain [dB]

0

–80

–60

–40

–20

40k 100k 400k

Phase [deg]

180

90

0

–90

–180

Frequency [Hz]

f

03 = 345.9 [kHz]

VCC = 5V, Ta = 25°C R = 10kΩ

Voltage gain

Phase

20

1.6M, 2M/inner track

10k 4M1M

Normalized filter voltage gain [dB]

0

–80

–60

–40

–20

40k 100k 400k

Phase [deg]

180

90

0

–90

–180

Frequency [Hz]

f

04 = 384.6 [kHz]

VCC = 5V, Ta = 25°C R = 10kΩ

Voltage gain

Phase

20

Example of Representative Characteristics

– 21 –

CXA3071N

Normalized preamplifier voltage gain + filter voltage gain NGv vs. Ambient temperature Ta

Ta — Ambient temperature [°C]

0.50

1.00

1.50

NGv — Normalized preamplifier voltage gain + filter voltage gain

VCC = 5V f = 100kHz NGV = GV/GV (Ta = 25°C)

VCC

10kΩ

20

Normalized preamplifier voltage gain + filter voltage gain NGv vs. Supply voltage Vcc

Vcc — Supply voltage [V]

–20 0 20 40 60 80

4.0 5.0 6.0

0.50

1.00

1.50

NGv — Normalized preamplifier voltage gain + filter voltage gain

Ta = 25°C f = 100kHz NGV = GV/GV (VCC = 5V)

VCC

10kΩ

20

–20

Normalized filter peak frequency NfO vs. Ambient temperature Ta

Ta — Ambient temperature [°C]

0 20 40 60 80

0.95

1.00

1.05

Nf

O

— Normalized filter peak frequency

VCC = 5V Nf0 = f0/f0 (Ta = 25°C)

VCC

10kΩ

20

Vcc — Supply voltage [V]

4.0 5.0 6.0

0.95

1.00

1.05

VCC

10kΩ

20

Nf

O

— Normalized filter peak frequency

Ta = 25°C Nf0 = f0/f0 (VCC = 5V)

Ta — Ambient temperature [°C]

0.95

1.00

1.05

NT

1

— Normalized 1st monostable multivibrator pulse width

VCC = 5V NTA = T1/T1 (Ta = 25°C)

10kΩ

20

0 20 40 60 80–20

VCC

Vcc — Supply voltage [V]

4.0 5.0 6.0

0.95

1.00

1.05

NT

1

— Normalized 1st monostable multivibrator pulse width

Ta = 25°C NTA = T1/T1 (VCC = 5V)

10kΩ

20

VCC

Normalized filter peak frequency NfO vs. Supply voltage Vcc

Normalized 1st monostable multivibrator pulse width NT

1 vs. Ambient temperature Ta

Normalized 1st monostable multivibrator pulse width NT1 vs. Supply voltage Vcc

– 22 –

CXA3071N

Normalized read data pulse width NT2 vs. Ambient temperature Ta

Ta — Ambient temperature [°C]

0.95

1.00

1.05

NT

2

— Normalized read data pulse width

VCC = 5V NTB = T2/T2 (Ta = 25°C)

0 20 40 60 80–20

Vcc — Supply voltage [V]

4.0 5.0 6.0

0.95

1.00

1.05

NT

2

— Normalized read data pulse width

Ta = 25°C NTB = T2/T2 (VCC = 5V)

Ta — Ambient temperature [°C]

0.95

1.00

1.05

NIw — Normalized write current

VCC = 5V NIW = IW/IW (Ta = 25°C)

VCC

10kΩ

20

0 20 40 60 80–20

Vcc — Supply voltage [V]

4.0 5.0 6.0

0.95

1.00

1.05

NIw — Normalized write current

Ta = 25°C NIW = IW/IW (VCC = 5V)

VCC

10kΩ

20

Vcc — Supply voltage [V]

4.0 5.0 6.0

0.95

1.00

1.05

NI

E

— Normalized erase current

Ta = 25°C NIE = IE/IE (VCC = 5V)

10kΩ

20

VCC

Ta — Ambient temperature [°C]

0.95

1.00

1.05

VCC = 5V NIE = IE/IE (Ta = 25°C)

NI

E

— Normalized erase current

10kΩ

20

VCC

0 20 40 60 80–20

VCC

10kΩ

20

VCC

10kΩ

20

Normalized read data pulse width NT2 vs. Supply voltage Vcc

Normalized write current NIw vs. Supply voltage Vcc

Normalized write current NIw vs. Ambient temperature Ta

Normalized erase current NI

E vs.

Ambient temperature Ta

Normalized erase current NIE vs. Supply voltage Vcc

– 23 –

CXA3071N

Ta — Ambient temperature [°C]

–20

0 20 40 60 80

3.6

4.1

Power supply ON/OFF detector threshold voltage VTH vs. Ambient temperature Ta

V

TH

— Power supply ON/OFF detector threshold voltage [V]

3.8

4.0

3.7

3.9

– 24 –

CXA3071N

Package Outline Unit: mm

20PIN SSOP (PLASTIC)

SONY CODE EIAJ CODE JEDEC CODE

PACKAGE STRUCTURE

PACKAGE MATERIAL LEAD TREATMENT LEAD MATERIAL PACKAGE WEIGHT

EPOXY RESIN SOLDER / PALLADIUM

COPPER / 42 ALLOY

0.1g

SSOP-20P-L01 SSOP020-P-0044

0.1 ± 0.1

0.5 ± 0.2

0° to 10°

DETAIL A

PLATING

∗6.5 ± 0.1

∗4.4 ± 0.1

0.22 – 0.05

+ 0.1

0.65 ± 0.12

20

11

10

1

A

0.1

+ 0.05

1.25 – 0.1

+ 0.2

0.15 – 0.02

6.4 ± 0.2

NOTE: Dimension “∗” does not include mold protrusion.

NOTE : PALLADIUM PLATING

This product uses S-PdPPF (Sony Spec.-Palladium Pre-Plated Lead Frame).