Datasheet AN8725FH Datasheet (Panasonic)

Page 1

ICs for Optical Disk Drive

AN8725FH

Semiconductor laser power control IC

■ Overview

The AN8725FH is a laser driver IC that can set a laser emitting level to a maximum precision in recording and playback of an optical recording equipment such as PD, and can modulate a laser light in tune with the external signal.

■ Features

• Digital setting of playback current, peak current, bias

current and abnormal light emitting level

• Peak current and bias current can be modulated by the

external signal.

• Driving current set-up (digital set-up) For playback: 8-bit + 4-bit (0 mA to 80 mA)

5-bit + 4-bit (0 mA to 150 mA) For peak: 4-bit + 8-bit (0 mA to 150 mA) For bias: 4-bit + 8-bit (0 mA to 150 mA)

• Laser output light monitoring circuit built-in

• Abnormal light emitting detecting function built-in:

Possible to set up excessive and insufficient light emitting levels with 4-bit DAC for playback and recording, respectively.

• Supply voltage abnormality detection:

Voltage down (3.9 V or less), voltage up (6.1 V or more)

14.00±0.20

12.00±0.20

60 41

120

(1.25)

0.50

+0.10

0.18

–0.05

Seating plane

QFP080-P-1212

(1.25)

0.90±0.10

14.00±0.20

12.00±0.20

1.95±0.20

0.50±0.20

0.10±0.10

Unit: mm

(1.00)

–0.05

+0.10

0.15

0° to 10°

■ Applications

• Optical disk drive

Page 2

AN8725FH ICs for Optical Disk Drive

■ Block Diagram

IGND

AGND

PKMD

BIMD

RPHOLD

XWR

XRD

AD0 AD1 AD2 AD3

DT0 DT1 DT2 DT3 DT4 DT5 DT6 DT7

XLDEN

XCLR

XLDERR

XHFON

logic

PKGND

PKV

BIV

Playback

current

DAC9

Playback

current

DAC1

Peak bias

current

DAC4

X1/SX2 changeover AAF off AAF RST CTL SW6

DAC1

DAC9 DAC4

Current source for DAC

PS over

Supply voltage

PS down WPW over

WPW down RPW over RPW down Sleep

monitoring

Insufficient light emission DAC5

Excessive light emission DAC6

LPF off

DAC56SW

BIGND

RGND

Playback

current

DAC7

LPF9

Playback

current

DAC8

LPF1

Peak

current

DAC2

Bias

current

DAC3

Shunt circuit

SW5

Abnormal

light

emitting

detection

SW1

SW2

SW3

I/V

conversion

AAF

Sleep circuit

voltage source

BIDCP

Reference

(1.25 V)

PKDCP

Current

amplification

Current

amplification

Current

amplification

X1, X10

SW6

RDCP2

DAC7DAC8DAC2DAC3

Buffer

RDCP1

44 43

39 38

70 69

75 74

51 50

49 48

47 46

56 36

53 52 34

33 28 19 10

3 2

LPF92 LPF91

LDRP

LPF12 LPF11

XLDPK LDPK

XLDBI LDBI

IPD IVIN IVOUT AAF PWRMONI DETMONI VNR VC CV

CGND

DGND

35 54

4 5 6 8 9

11 12 13 14

Control

15 16 17 18 22 23 24 25

26 27 29 32

PWMSK

ERFIL

ERREF

RREF

202141425960617980

SGND

DACMONI

Page 3

ICs for Optical Disk Drive AN8725FH

■ Pin Descriptions

Note) Description on notations of "Category" in the following list:

IN : Input pin I/O : Input/output pin (pull-down with 100 k Ω) IND : Input pin (pull-down with 100 kΩ) PS : Power supply/GND pin INU : Input pin (pull-up with 100 kΩ) MSC: Parts connecting pin, etc. OUT: Output pin

A: Analog function D: Digital function

Pin No. Symbol Category Description

1 SGND PS D Pin connected to the chip substrate.

Must be used in the same potential as other GND pins.

2 DGND PS D GND pin exclusive for a logic circuit. 3 DGND PS D Must be used in the same potential as other GND pins.

4 PKMD IND D Peak current modulation signal input pin.

In high-level, the current set up with DAC2 is superimposed on LD.

5 BIMD IND D Bias current modulation signal input pin.

In high-level, the current set up with DAC3 is superimposed on LD.

6 RPHOLD IND D Record gate signal input pin.

Inputs a low-level in playback and a high-level in recording. Switches an amp. of light monitoring signal, abnormally emitted light detection level and on/off of HF module.

7 XWR INU D Register writing signal pin.

Selects a register specified by address in a fall edge and writes a bus data on the register of the address specified in the rise edge.

8 XRD INU D Register read-out signal pin.

9DVCCPS D Power supply pin exclusive for a logic circuit.

Must be used in the same potential as other power supply pins.

10 DGND PS D GND pin exclusive for a logic circuit.

Must be used in the same potential as other GND pins.

11 AD0 IND D 4-bit address pin for registers. 12 AD1 IND D Selects the register to be accessed. 13 AD2 IND D 14 AD3 IND D 15 DT0 I/O D Data I/O 8-bit bus pin. 16 DT1 I/O D The bus to set the data to be written on a register and to read out the data 17 DT2 I/O D of a register. 18 DT3 I/O D

19 DGND PS D GND pin exclusive for a logic circuit.

Must be used in the same potential as other GND pins.

Page 4

AN8725FH ICs for Optical Disk Drive

■ Pin Descriptions (continued)

Pin No. Symbol Category Description

20 SGND PS D Pin connected to the chip substrate. 21 SGND PS D Must be used in the same potential as other GND pins. 22 DT 4 I/O D Data I/O 8-bit bus pin. 23 DT 5 I/O D The bus to set the data to be written on a register and to read out the data 24 DT 6 I/O D of a register. 25 DT 7 I/O D

26 XLDEN INU D LD enable input pin.

In a high-level or open mode, LD becomes off and open. This state is suited to check the LD characteristics in keeping a connection to the IC. At the time power off, both ends of LD are short-circuited by the IC for protection. In the low-level, it returns to a normal operation.

27 XCLR IND D Clear signal input pin.

Sets an LDDENB register to "0" in the low-level and presets the status of each DAC and each switch to an initial state as defined separately. But six registers for an abnormal detection are not cleared. In this state, each output of a current amplification 1, 2, 3 are in the off state and a shunt circuit becomes on to continue to protect LD. Setting this pin to the high-level and the LDDENB register to "1", it returns to a normal operation.

28 DGND PS D GND pin exclusive for a logic circuit.

Must be used in the same potential as other GND pins.

29 XLDERR OUT D Laser abnormality detection output pin.

When a supply voltage or a laser light emission exceeds a fixed range, it goes to low-level. A supply voltage abnormality is detected for the voltage drop (3.9 V or less) or voltage rise (6.1 V or more). And an abnormal light emission is detected for an excessive or weaker light emission set up by 4-bit DAC5 and DAC6. This abnormality detection is latched so as to prevent it from being reset until ERRCLR register is set to "1". Further, each DAC output of a playback current, a peak current and a bias current can be set to off, a shunt circuit be set to on and LD between anode and GND be short-circuited by 100 Ω so that LD can be protected. This protection function is latched to keep it from being reset until ERRCLR is set to "1". Selection of either operation or non-operation for this operation can be made by an STPMSK register.

30 PWMSK MSC D The pin to set up the mask time for a transitional response output that

comes out at switching a detection level of excessive or insufficient light emission by RPHOLD. Set a mask time by an external capacitor between PWMSK and DGND and the resistor (10 kΩ) inside the IC. This pin is for a schmitt-trigger input.

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ICs for Optical Disk Drive AN8725FH

■ Pin Descriptions (continued)

Pin No. Symbol Category Description

31 ERFIL MSC D Filter setting pin to avoid a detection error of laser abnormality caused

by noise. Connect an external capacitor between ERFIL and DGND, and set a filter together with a resistor (10 kΩ) inside the IC. This pin is for schmitt-trigger input.

32 XHFON OUT D HF module on/off control signal output pin.

High corresponds to off and low to on.

33 DGND PS D GND pin exclusive to a logic circuit.

Must be used in the same potential as other GND pins.

34 DV

PS D Power supply pin exclusive to a logic circuit.

Must be used in the same potential as other power supply pins.

35 AGND PS A GND pin exclusive to a analog circuit.

Must be used in the same potential as other GND pins.

36 VC MSC A Output pin for reference voltage (1.25 V).

Connects a capacitor C between this pin and AGND for de-coupling.

37 RREF MSC A

Reference resistor connecting pin to determine an output current for each DAC. Connect a resistor of 10 kΩ between RREF and AGND.

38 LPF11 MSC A LPF characteristic setting pin for DAC1 and DAC8. 39 LPF12 MSC A Connect an external resistor between LPF11 and LPF12, and then

capacitor between LPF12 and IGND to set up a cutoff frequency.

40 IGND PS A GND pin for playback power supply setting DAC1, DAC9 and distur-

bance reduction LPF. Must be used in the same potential as other GND pins.

41 SGND PS D Pin connected to the chip substrate. 42 SGND PS D Must be used in the same potential as other GND pins. 43 LPF91 MSC A LPF characteristic setting pin for DAC9 and DAC7. 44 LPF92 MSC A Connect an external resistor between LPF91 and LPF92 and then

capacitor between LPF92 and IGND to set a cutoff frequency.

45 AV

PS A Power supply pin for an analog circuit, a reference supply voltage circuit, etc.

Must be used in the same potential as other power supply pins.

46 DETMONI OUT A Pin to monitor a signal for detecting abnormally emitted light.

In a playback mode, the signal output is five times that in recording (ten times is posisible by a register setting). Has offset to VNR due to being outputted through a buffer of transistors.

47 PWRMONI OUT A Laser emitting light monitor signal.

In a low-level of RPHOLD, the amplifier output has 10 times gain compared with recording, and is equipped with AFF.

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AN8725FH ICs for Optical Disk Drive

■ Pin Descriptions (continued)

Pin No. Symbol Category Description

48 AAF MSC A AAF characteristic setting pin for optical monitor circuit.

Connect an external resistor, capacitor between AAF and IVOUT and set up a cutoff frequency.

49 IVOUT OUT A I to V conversion signal output pin.

Connect an external variable resistor between IVIN and IVOUT.

50 IVIN MSC A I to V conversion resistor connection pin.

Connect an external variable resistor between IVIN and IVOUT.

51 IPD MSC A Pin photo diode (PD) connection pin.

Connect a pin photo diode for detecting a semiconductor laser emitting light. Connect anode to this pin. Applicable to a source-type PD which has a typical value of 40 µA to 160 µA output in object lens output power of 1 mW.

52 CGND PS A GND pin in an optical monitor circuit.

Must be used in the same potential as other GND pins.

53 CV

PS A Power supply pin in an optical monitor circuit.

Must be used in the same potential as other power supply pins.

54 AGND PS A GND pin exclusive to a analog circuit.

Must be used in the same potential as other GND pins.

55 ERREF IN A Abnormally emitting light detecting range setting pin.

Sets a full scale voltage of DAC5 and DAC6. A setting range is VNR or more and input range of an external ADC or less.

56 VNR IN A Reference level input pin for PWRMONI output.

Input a reference voltage of 1.25 V of an external ADC.

57 DACMONI OUT A DAC5, DAC6 monitor pin.

DAC5 voltage is outputted when DAC56 SW register is low, DAC6 voltage is outputted when DAC6 voltage is high.

58 AV

PS A Power supply pin for an analog circuit, a reference supply voltage circuit, etc.

Must be used in the same potential as other power supply pins.

59 SGND PS D Pin connected to the chip substrate. 60 SGND PS D Must be used in the same potential as other GND pins. 61 SGND PS D

62 RGND PS A GND pin for the lead current setting DAC7 and DAC8.

Must be used in the same potential as other GND pins.

63 RDCP1 MSC A Pin to connect a de-coupling capacitor to protect the output current of

DAC7, the read current setting circuit, from disturbance by a switching noise such as peak current. (Connects a capacitor between RDCP1 and RGND.)

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ICs for Optical Disk Drive AN8725FH

■ Pin Descriptions (continued)

Pin No. Symbol Category Description

64 RDCP2 MSC A Pin to connect a de-coupling capacitor to protect the output current of

DAC7, the read current setting circuit, from disturbance by a switching noise such as peak current. (Connects a capacitor between RDCP2 and RGND.)

65 LDRP OUT A Source type read current (DAC1, DAC7, DAC8, DAC9) output pin.

Possible to set up the range of 0 mA to 150 mA in the precision of 8-bit + 4-bit + 5-bit + 4-bit. Output voltage range is 1.0 V to 3.5 V.

66 N.C. N.C. pin. 67 N.C. Open the pin or connect to GND.

68 RV

PS A Power supply pin for read current setting DAC7, DAC8.

Consumes approximately a quarter of the necessary read current. Must be used in the same potential as other power supply pins.

69 LDPK OUT A Source-type peak current (DAC2) output pin.

Possible to set the range of 0 mA to 150 mA in the accuracy of 8-bit. The output voltage range is 1.0 V to 3.2 V.

70 XLDPK IN A Sink-type peak current output pin.

Approximately three fourths of LDRK output current are outputted from this pin.

71 PKGND PS A GND pin of DAC2 in the peak current setting circuit.

Must be used in the same potential as other GND pins.

72 PKV

PS A DAC2 power supply pin in the peak current setting circuit.

Consumes approximately a quarter of the setting current. Must be used in the same potential as other power supply pins.

73 PKDCP MSC A Pin to connect a de-coupling capacitor to avoid the output current disturbance,

which is caused by a switching noise such as peak current, in peak current setting circuit DAC2. (Connects a capacitor between PKDCP and PKGND.)

74 LDBI OUT A Source-type bias current (DAC3) output pin.

Possible to set the range of 0 mA to 150 mA in the accuracy of 8-bit. Output voltage range is 1.0 V to 3.2 V.

75 XLDBI IN A Sink-type peak current output pin.

Approximately three fourths of LDBI output current are outputted from this pin.

76 BIGND PS A GND pin of a bias current setting circuit DAC3.

Must be used in the same potential as other GND pins.

77 BIV

PS A Power supply pin of a bias current setting circuit DAC3.

Consumes approximately one fourth of a setting current. Must be used in the same potential as other power supply pins.

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AN8725FH ICs for Optical Disk Drive

■ Pin Descriptions (continued)

Pin No. Symbol Category Description

78 BIDCP MSC A Pin to connect a de-coupling capacitor to avoid the output current disturbance,

which is caused by a switching noise such as bias current, of a bias current setting circuit DAC3. (Connects a capacitor between BIDCP and BIGND.)

79 SGND PS D Pin connected to the chip substrate. 80 SGND PS D Must be used in the same potential as other GND pins.

■ Absolute Maximum Ratings

Parameter Symbol Rating Unit

Supply voltage V Input voltage V Outoput voltage V Parts connecting pin voltage V Supply current I Pin current I

Power dissipation Operating ambient temperature Storage temperature

Note)*1: Except for the operating ambient temperature and storage temperature, all ratings are for Ta = 25°C.

2: The power dissipation shown is for the IC package in single unit at Ta = 75°C.

Refer to "■ Application Notes, 1. PD  Ta curves of QFP080-P-1212".

T T

OUT

MSC

opr

stg

7.0 V

− 0.4 to VCC +0.4 V

80 mA

−100 to +100 mA

600 mW

−20 to +75 °C

−55 to +150 °C

■ Recommended Operating Range

Parameter Symbol Range Unit

Supply voltage V

■ Electrical Characteristics at VCC = 5.0 V, Ta = 25°C

Parameter Symbol Conditions Min Typ Max Unit

Supply current

Supply current I

Sleep mode supply current I

Reference voltage block

Reference voltage output V Reference voltage variation ∆V

Maximum output current ∆V

XCLR = low, digital I/O pin = open,  20 30 mA

IPD = 0 µA Sleep = 1, IPD = 0 µA  34mA

SLP

REF

REFVCC

OMIREF

= 4.5 V to 5.5 V, I = 4.5 V to 5.5 V ± 20

= −1 mA to + 1 mA

REF

= −1.5 mA, ± 50 mV

difference from I

REF

4.50 to 5.50 V

1.20 1.25 1.30 V

= 0 mA ± 15 mV

REF

= 0 mA

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ICs for Optical Disk Drive AN8725FH

■ Electrical Characteristics at VCC = 5.0 V, Ta = 25°C (continued)

Parameter Symbol Conditions Min Typ Max Unit

Digital block

High-level input voltage V

Low-level input voltage V

High-level input voltage V (Schmitt-trigger input) V

Low-level input voltage V (Schmitt-trigger input) V

High-level output voltage V

Low-level output voltage V

Input pull-up, pull-down R resistance Pull-down: VIH = 5.0 V

Input leak I

Entire optical monitor

Offset voltage at playback V

Offset voltage at recording V

PMOFW

Gain ratio GR G

Maximum output voltage V

Minimum output voltage V

f characteristics at playback f

PMR AAF

f characteristics at recording f

Settling time at playback t

Settling time at recording t

PMSETR

PMSETW

To be applied to a digital input pin 0.8 ×  V

To be applied to a digital input pin 0.2 × V

To be applied to PWMSK, ERFIL pin 0.8 ×  V

IHSHC

To be applied to PWMSK, ERFIL pin 0.2 × V

ILSHC

OHIOH

OL1IOL

OL2IOL

LKH

= −2 mA 0.8 ×  V

= +2 mA 0.2 × V

= +0.5 mA 0.4

Pull-up: VIL = 0 V 75 100 125 kΩ

To be applied to a digital input pin, 80 µA VOH = 5.25 V

To be applied to a digital input pin, 10

LKL

VOL = 0 V

VR1 = 1 kΩ, IPD = 0 mA −15  15 mV

PMOFR

VR1 = 1 kΩ, difference from an ideal −40 0 40 value at IPD = 100 µA to 200 µA

VR1 = 1 kΩ, IPD = 0 mA −15  15 mV VR1 = 1 kΩ, difference from an ideal −20 0 20

value at IPD = 100 µA to 2 000 µA

PMR /GPMW

, 9.0 10.0 11.0 times

output = VNR +0.6 V to 2.0 V

PM max

VCC × VCC × V

0.73 0.78

PM min

VNR− V

AAF-off VR1 = 1 kΩ,46 MHz

−3 dB, IPD = 100 µA to 200 µA

OFF

VR1 = 1 kΩ, 6 7.5  MHz

PMW

−3 dB, IPD = 100 µA to 2 000 µA VR1 = 1 kΩ, error ±0.5%,  200 400 ns

output variation: Range of 0 V to 2 V VR1 = 1 kΩ, error ±0.5%,  200 400 ns

output variation: Range of 0 V to 2 V

0.015

Page 10

AN8725FH ICs for Optical Disk Drive

■ Electrical Characteristics at VCC = 5.0 V, Ta = 25°C (continued)

Parameter Symbol Conditions Min Typ Max Unit

Current amplification changeover

Gain at playback G Gain at recording G Gain ratio GR

I to V conversion block

Offset voltage V

DAC1 block

Resolution RES1  8  bit Integral linearity error EL1 −1.0  10.0 LSB Differential linearity error ED1 −1.0  1.5 LSB Maximum output current I

Offset current I

LPF on/off gain ratio GR

Settling time t

DAC7 block

Resolution RES7  4  bit Integral linearity error EL7 −1.0  1.0 LSB Differential linearity error ED7 − 0.5  0.5 LSB Maximum output current I

Minimum output current I

Settling time t

DAC8 block

Resolution RES8  4  bit Integral linearity error EL8 −1.0  1.0 LSB Differential linearity error ED8 − 0.5  0.5 LSB

Reg7 = "80h", IPD = 40 µA to 240 µA 9.0 10.0 11.0 times

IPDR

Reg7 = "C0h", IPD = 200 µA to 3 200 µA

IPDW

IPDGIPDR /GIPDW

VR1 = 0 Ω, IPD = 0 mA −15  15 mV

IVOF

DAC1 = "FFh", DAC8 [Fh], 70 80 90 mA

1max

0.9 1.0 1 . 1 times

9.0 10.0 11.0 times

DAC7 [0h], DAC9 [00h] "00h" LPF-on, DAC8 [Fh], −1  1mA

1OF1

DAC7 [0h], DAC9 [00h], DAC7, DAC8 characteristics included

"00h" LPF-off, DAC8 [Fh], −250  250 µA

1OF2

DAC7 [0h], DAC9 [00h]

DALGLPFON

, 0.95 1 1.05 times

LPFOFF

input amplitude 0 V to 2 V XWR ↑ to DAC1 [10h to 8Fh],  400 800 ns

SDA1

±2 LSB range, DAC7 [0h], DAC8 [Fh], DAC9 [00h] LPF-off, LPF11 pin open,

RDCP2 pin open

Set to DAC7 = "Fh", 133 150 170 mA

7max

DAC9 [1Fh], DAC1 [00h], DAC8 [0h] Set to DAC7 = "0h", − 0.1 0 0.1 mA

7min

DAC9 [1Fh], DAC1 [00h], DAC8 [0h] XWR ↑ to DAC7 [0h to Fh],  50 500 ns

SDA7

DAC9 [1Fh], ±0.5 LSB, DAC1 [00h], DAC8 [0h]

Page 11

ICs for Optical Disk Drive AN8725FH

■ Electrical Characteristics at VCC = 5.0 V, Ta = 25°C (continued)

Parameter Symbol Conditions Min Typ Max Unit

DAC8 block (continued)

Maximum output current I

Minimum output current I

Settling time t

DAC2 block

Resolution RES2  8  bit Integral linearity error EL2 −1.0  5.0 LSB Differential linearity error ED2 −1.0  1.0 LSB Maximum output current I Offset current I Settling time t

DAC3 block

Resolution RES3  8  bit Integral linearity error EL3 −1.0  5.0 LSB Differential linearity error ED3 −1.0  1.0 LSB Maximum output current I Offset current I Settling time t

DAC4 block

Resolution RES4  4  bit Integral linearity error EL4 −1.0  1.0 LSB Differential linearity error ED4 −1.0  1.0 LSB Maximum output current I Offset current I Settling time t

DAC9 block

Resolution RES9  5  bit Integral linearity error EL9 −1.0  1.0 LSB Differential linearity error ED9 −1.0  1.0 LSB Maximum output current I

Set to DAC8 = "Fh", 70 80 90 mA

8max

DAC1 [FFh], DAC9 [1Fh], DAC7 [0h] Set to DAC8 = "0h", 4 5 6 mA

8min

DAC1 [FFh], DAC9 [1Fh], DAC7 [0h] XWR ↑ to DAC8 [0h to Fh],  50 250 ns

SDA8

DAC1 [80h], ±0.5 LSB, DAC9 [00h], DAC7 [0h]

DAC2 = "FFh", DAC4 [Fh] 133 150 170 mA

2max

DAC2 = "00h", DAC4 [Fh] − 0.1  0.1 mA

2OF

XWR ↑ to DAC2 [10h to FFh],  100 250 ns

SDA2

±2.0 LSB, DAC4 [Fh]

DAC3 = "FFh", DAC4 [Fh] 133 150 170 mA

3max

DAC3 = "00h", DAC4 [Fh] − 0.1  0.1 mA

3OF

XWR ↑ to DAC3 [10h to FFh],  200 450 ns

SDA3

±2.0 LSB, DAC4 [Fh]

DAC2 = "FFh", DAC4 [Fh] 133 150 170 mA

4max

DAC2 = "00h", DAC4 [Fh] − 0.1  0.1 mA

4OF

XWR ↑ to DAC4 [0h to Fh],  300 600 ns

SDA4

±0.5 LSB, DAC2 [FFh]

DAC9 = "1Fh", DAC7 [Fh], 133 150 170 mA

9max

DAC1 [00h], DAC8 [0h]

Page 12

AN8725FH ICs for Optical Disk Drive

■ Electrical Characteristics at VCC = 5.0 V, Ta = 25°C (continued)

Parameter Symbol Conditions Min Typ Max Unit

DAC9 block (continued)

Offset current I

LPF on/off gain ratio GR

Settling time t

Supply voltage monitoring block

Abnormality release supply V voltage V Abnormality supply voltage V

Abnormally emitted light detection DAC5

Resolution RES5  4  bit Integral linearity error EL5 − 0.5  0.5 LSB Differential linearity error ED5 − 0.5  0.5 LSB Offset voltage V

Settling time t

Abnormally emitted light detection DAC6

Resolution RES6  4  bit Integral linearity error EL6 − 0.5  0.5 LSB Differential linearity error ED6 − 0.5  0.5 LSB Offset voltage V

Settling time t

"00h" LPF-on, DAC7 [Fh], −2.0  2.0 mA

9OF1

DAC8 [0h], DAC1 [00h], DAC7, DAC8 characteristics included

"00h" LPF-off, DAC7 [Fh], − 0.85  0.85

9OF2

DAC8 [0h], DAC9 [00h], DAC7, DAC8 characteristics included

DA9GLPFON

, 0.95 1 1.05 times

LPFOFF

input amplitude 0 V to 2 V XWR ↑ to DAC9 [00h to 1Fh]400 800 ns

SDA9

±2 LSB range, DAC7[Fh], DAC8 [0h], LPF9-off, LPF91 pin open, RDCP1 pin open

Sweep VCC from low to high 3.9 4.2 4.5 V

PSDL

Sweep VCC from high to low 5.5 5.8 6.1

PSOL

Sweep VCC from high to low 3.6 3.9 4.2 V

PSDH

Sweep VCC from low to high 5.8 6.1 6.4

PSOH

DAC5 = set to "Fh" and difference to −20  20 mV

5OF1

ERREF pin DAC5 = set to "0h" and difference to 105 125 145

5OF2

VNR pin, at ERREF − VNR = 2.0 V XWR ↑ to DAC5 [0h to Fh],  0.5 1.5 µs

SDA5

±0.5 LSB

DAC6 = set to "Fh" and difference to −20  20 mV

6OF1

ERREF pin DAC6 = set to "0h" and difference to 105 125 145

6OF2

VNR pin, at ERREF − VNR = 2.0 V XWR ↑ to DAC6 [0h to Fh]0.5 1.5 µs

SDA6

±0.5 LSB

Page 13

ICs for Optical Disk Drive AN8725FH

■ Electrical Characteristics at VCC = 5.0 V, Ta = 25°C (continued)

Parameter Symbol Conditions Min Typ Max Unit

Abnormally emitted light detection optical monitor block

Offset voltage V

Gain G

Gain ratio

f characteristics at playback f

f characteristics at recording f

Control operation response

Data write to XLDERR ↓ t Data write to XLDERR ↑ t Data write to sleep mode t Data write to normal mode t RPHOLD ↑ to DAC5 R → Wt

RPHOLD ↓ to DAC5 W → Rt

RPHOLD ↑ to DAC6 R → Wt

RPHOLD ↓ to DAC6 W → Rt

RPHOLD ↑ to RPHOLD ↓ to

HF module signal HF module signal

In playback, DETMONI pin, −40  60 mV

EROFR

IPD = 0 µA In recording, DETMONI pin, −50  50

EROFW

IPD = 0 µA In playback, addr. "9": D4 = "0", 9.0 10.0 11.0 times

ERR1

IPD = 100 µA to 200 µA In playback, addr. "9": D4 = "1", 4.5 5.0 5.5

ERR2

IPD = 100 µA to 200 µA In recording, DETMONI pin, 0.9 1.0 1.1

ERW

IPD = 100 µA to 2 000 µA

ERR1

ERW

ERR2

ERW

VR1 = 1 kΩ, −3 dB, 2.5 MHz

ERR

9.0 10.0 11.0 times

4.5 5.0 5.5

IPD = 100 µA to 200 µA VR1 = 1 kΩ, −3 dB, 5.0 MHz

ERW

IPD = 100 µA to 2 000 µA

XWR ↑ to XLDERR ↓20 60 ns

203

XWR ↑ to XLDERR ↑25 60 ns

204

XWR ↑ to sleep mode  49µs

205

XWR ↑ to normal mode  38µs

206

RPHOLD ↑ to DAC5 W,  0.40 2.5 µs

at having reached ±0.5 LSB RPHOLD ↓ to DAC5 R,  0.40 2.5 µs

at having reached ±0.5 LSB RPHOLD ↑ to DAC6 W,  0.40 2.5 µs

at having reached ±0.5 LSB RPHOLD ↓ to DAC6 R,  0.40 2.5 µs

at having reached ±0.5 LSB

RPHOLD ↑ to XHFON ↑18 30 ns

RPHOLD ↓ to XHFON ↓17 30 ns

Page 14

AN8725FH ICs for Optical Disk Drive

■ Electrical Characteristics at VCC = 5.0 V, Ta = 25°C (continued)

Parameter Symbol Conditions Min Typ Max Unit

Recording Modulation

113

123

to t

117

127

PKMD ↑ to LDPK ↑ 50% delay  18 30 ns

113

PKMD ↓ to LDPK ↓ 50% delay  17 30

114

LDPK ↑ 50% to LDPK ↓ 50% t

115

LDPK ↑ 10% to LDPK ↑ 90%  69

116

LDPK ↓ 90% to LDPK ↓ 10%  46

117

BIMD ↑ to LDBI ↑ 50% delay  18 30 ns

123

BIMD ↓ to LDBI ↓ 50% delay  17 30

124

LDBI ↑ 50% to LDBI ↓ 50% t

125

LDBI ↑ 10% to LDBI ↑ 90%  69

126

LDBI ↓ 90% to LDBI ↓ 10%  58

127

112

122

−3t

112

122

−1t

112

122

Peak modulation signal response

Bias modulation signal response

Note)*1: Resistive load (at 15 Ω)

Conditions of t

Measure at approximately 1.75 V of LDPK pin voltage.

DAC1 [FFh], DAC8 [7h] DAC9 [1Fh], DAC7 [7h], DAC4 [Fh] DAC2 [00h to 80f]

Conditions of t

Measure at approximately 1.75 V of LDPK pin voltage.

DAC1 [FFh], DAC8 [7h] DAC9 [1Fh], DAC7 [7h], DAC4 [Fh] DAC3 [00h to 80f]

• Design reference data

Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.

Parameter Symbol Conditions Min Typ Max Unit

Reference voltage block

Reference voltage temperature ∆V

characteristics

TEMVREF

= 0 V, Ta = −20°C to +75°C ±30 mV

Digital block

Low → high input hysteresis V

To be applied to PWMSK, ERFIL pin  1.0  V

LHHYS

(Schmidt trigger input) High → low input hysteresis V

To be applied to PWMSK, ERFIL pin  1.0  V

HLHYS

(Schmidt trigger input)

Entire optical monitor

Offset voltage temperature variation ∆TI

∆V

In playback, VR1 = 1 kΩ55 200 µV

PMOFR

= 10 µA to 200 µA °C

Ta = −20°C to +75°C

∆V

In recording, VR1 = 1 kΩ30 150

PMOFW

∆TI

= 100 µA to 2 000 µA

Ta = −20°C to +75°C

Note)*2: Difference between V

min. and V

REF

max. within the range of Ta = −20°C to +75°C.

REF

Page 15

ICs for Optical Disk Drive AN8725FH

■ Electrical Characteristics at VCC = 5.0 V, Ta = 25°C (continued)

• Design reference data (continued)

Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.

Parameter Symbol Conditions Min Typ Max Unit

Entire optical monitor (continued)

Gain ratio variation to temperature G

Slew rate S1

Signal changeover response t

f characteristics f

Current amplification block

Gain variation to temperature dG

Gain ratio variation to temperature G

Signal changeover response t

I to V conversion

Offset voltage variation to temperature dT Ta = −20°C to +75°C °C

Slew rate Sl Open loop gain G Zero-cross frequency f Settling time t

AAF analog SW On resistance at playback R On resistance at recording R

DAC1

f characteristics f

PMSW1

PMSW2

PMROF

IPDSW1

IPDSW2

IVSET

DAC1

PMRTa PMW

PMR

PMW

= −20°C to +75°C −3  3%

In playback, AAF-off rise 13 18  V/µs In recording, rise 35 45 

× 10 → × 1, at having reached ±0.5%  100 300 ns × 1 → × 10, at having reached ±0.5%  200 500

In playback, −3 dB, VR1 = 1 kΩ,  40.8  kHz AAF filter on, IPD 100 µA to 200 µA

In playback, IPD = 60 µA to 240 µA, −3  3%

IPDR

Ta = −20°C to +75°C In recording, IPD = 0.2 mA to 3.2 mA, −3  3

IPDW

Ta = −20°C to +75°C

In playback, IPD = 60 µA to 240 µA, −3  3%

IPDR

In recording, IPD = 0.2 mA to 3.2 mA,

PMW

Ta = −20°C to +75°C × 10 → × 1,  100 300 ns

at having reached ±0.5% × 1 → × 10,  200 500

at having reached ±0.5%

VR1 = 0 Ω, IPD = 0 µA,  10 50 µV

IVOF

Output amplitude at 1 V[p-p]  8  MHz

0IV

20 34  V/µs  50  dB

Error ±0.5%, output variation: within  100 200 ns the range of 0 V to 2 V

0 Ω between I

AFR

AFW

Sine wave signal equivalent to 40 mA[p-p]

VOUT

and I

VIN

 175 250 Ω  200 300 Ω

 1  MHz

of current amplitude at LPF12 pin, DAC7 [0h], DAC8 [Fh], DAC9 [00h], RDCP2 pin = 1 000 pF

Page 16

AN8725FH ICs for Optical Disk Drive

■ Electrical Characteristics at VCC = 5.0 V, Ta = 25°C (continued)

• Design reference data (continued)

Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.

Parameter Symbol Conditions Min Typ Max Unit

DAC1 (continued)

Driving current temperature Err characteristics DAC7 [0h], DAC8 [Fh],

Offset current variation to

temperature dT DAC7 [0h], DAC8 [Fh], °C

DAC9

f characteristics f

Driving current temperature Err characteristics DAC7 [Fh], DAC8 [0h],

Offset current variation to

temperature dT DAC7 [Fh], DAC8 [0h], °C

DAC7

Driving current temperature Err characteristics DAC9 [1Fh], DAC1 [00h],

Offset current temperature

characteristics dT DAC9 [1Fh], DAC1 [00h], °C

DAC8

Driving current temperature Err characteristics DAC1 [FFh], DAC9 [00h],

Offset current temperature

characteristics dT DAC1 [FFh], DAC9 [00h], °C

Including DAC8 when setting at "FFh",  710 %

DA1

Ta = 0°C to +75°C "00h", LPF-on, including DAC7, DAC8,

1ON

 210µA

Ta = −25°C to +75°C "00h", LPF-off, including DAC7, DAC8,

1OF

 0.5 10

dT DAC7 [0h], DAC8 [Fh],

Ta = −25°C to +75°C

Sine wave signal equivalent to 40 mA[p-p]

DAC9

 1  MHz

of current amplitude at LPF22 pin, DAC7 [Fh], DAC8 [0h], DAC1 [00h], RDCP1 pin = 1 000 pF

Including DAC8 at setting at "1Fh",  710%

DA9

Ta = 0°C ∼ +75°C "00h", LPF-on, including DAC7, DAC8,

9ON

 210µA

Ta = −25°C ∼ +75°C "00h", LPF-off, including DAC7, DAC8,

9OF

 0.5 10

dT DAC7 [Fh], DAC8 [0h],

Ta = −25°C to +75°C

DAC7 [Fh], DAC8 [0h], 0815%

DA7

Ta = −20°C to +75°C DAC7 [0h], DAC8 [0h],  0.2 10 µA

DA7OF

Ta = −20°C to +75°C

DAC8 [Fh], DAC7 [0h], 0815%

DA8

Ta = −20°C to +75°C DAC8 [0h], DAC7 [0h],  0.2 10 µA

DA8OF

Ta = −20°C to +75°C

Page 17

ICs for Optical Disk Drive AN8725FH

■ Electrical Characteristics at VCC = 5.0 V, Ta = 25°C (continued)

• Design reference data (continued)

Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.

Parameter Symbol Conditions Min Typ Max Unit

DAC2

Offset current temperature characteristics dT °C

Driving current temperature Err characteristics Ta = −20°C to +75°C

Settling time t

DAC3

Offset current temperature characteristics dT °C

Driving current temperature Err characteristics Ta = −20°C to +75°C

Settling time t

DAC4

Offset current temperature characteristics dT °C

Driving current temperature Err characteristics Ta = −20°C to +75°C

Supply voltage monitoring block

Abnormal supply voltage V detection hysteresis detection and release of supply voltage

Comparator in abnormally emitted light detection block

Input offset voltage V

DA2OF

SDA2A

SDA2B

DA3OF

SDA3A

SDA3B

DA4OF

PSDHYS

PSOHYS

PDCOF

POCOF

10 µA

DAC3 = "FFh", set to DAC4 = "Fh",  610%

DA2

XWR ↑ to  40 100 ns DAC2 [∆4: 10 h to 14h], ±0.5 LSB DAC4 [Fh]

XWR ↑ to  80 200 DAC2 [∆7F: 10 h to 8 Fh],

±1.0 LSB DAC4 [Fh]

10 µA

DAC3 = "FFh", set to DAC4 = "Fh",  610%

DA3

XWR ↑ to  40 100 ns DAC3 [∆4: 10 h to 14h], ±0.5 LSB DAC4 [Fh]

XWR ↑ to  80 200 DAC3 [∆7F: 10 h to 8Fh],

±1.0 LSB DAC4 [Fh]

10 µA

DAC4 = "Fh", set to DAC2 = "FFh",  610%

DA4

Voltage difference between abnormality  300  mV

drop, V

PSD1

−V

PSDH

Voltage difference between abnormality  300  detection and release of supply voltage drop, V

PSOH

−V

PSOL

Insufficiently emitted light detection −5  5mV Excessively emitted light detection −5  5

Page 18

AN8725FH ICs for Optical Disk Drive

■ Electrical Characteristics at VCC = 5.0 V, Ta = 25°C (continued)

• Design reference data (continued)

Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.

Parameter Symbol Conditions Min Typ Max Unit

Comparator in abnormally emitted light detection block (continued)

Input offset voltage variation to temperature dT °C

Abnormally emitted light t detection response t Abnormally emitted light t release response t

DAC5 block

Offset voltage variation to temperature dT °C

DAC6 block

Offset voltage variation to temperature dT °C

Optical monitor for abnormally emitted light detection

Offset voltage variation to temperature dT IPD = 0 µA °C

Gain variation to temperature dG

Gain ratio variation to temperature G

Settling time t

Signal changeover response t (× 10 mode) addr "9": D4 = "0" × 10

Insufficiently emitted light detection 20 µV

PDCOF

Excessively emitted light detection 20

POCOF

PWDNF

PWOVF

Insufficiently emitted light detection  150 300 ns Excessively emitted light detection  150 300 Insufficiently emitted light detection  150 300 ns

PWDR

Excessively emitted light detection  150 300

Set to "Fh" −10 80 µV

DA5OF

Set to "Fh" −10 80 µV

DA5OF

In playback, −20 210 µV

EROFR

In recording, −20 200

EROFW

dT IPD = 0 µA

In playback, IPD = 100 µA to 200 µA, −3 0.5 3 %

ERR1

Ta = −20°C to +75°C

In playback, IPD = 100 µA to 200 µA, −3 0.5 3

ERR2

Ta = −20°C to +75°C

In recording, IPD = 100 µA to 2 000 µA, −3 0.5 3

ERW

Ta = −20°C to +75°C

ERW

ERR

= −20°C to +75°C −3 0.5 3 %

ERRTa

In playback, error: ±0.5%,  250 400 ns current variation 100 µA to 200 µA

In playback, error: ±0.5%,  100 200

ERW

current variation 100 µA to 2 000 µA

ERSW1A

ERSW2A

Playback → recording ±0.5%  170 400 ns

Recording → playback ±0.5%  550 1 000 addr "9": D4 = "0" × 10

Page 19

ICs for Optical Disk Drive AN8725FH

■ Electrical Characteristics at VCC = 5.0 V, Ta = 25°C (continued)

• Design reference data (continued)

Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.

Parameter Symbol Conditions Min Typ Max Unit

Optical monitor for abnormally emitted light detection (continued)

Signal changeover response t

ERSW1B

× 5 mode addr "9": D4 = "1" × 5

ERSW2B

Control operation response Register setting → output

Data writing to LPF-off t Data writing to LPF-on t Data writing to AAF-off t Data writing to AAF-on t Data writing to t

DAC6 changeover

Data writing to t

DAC5 changeover Data writing to shunt on

Data writing to shunt off

Control operation response Input → output

RPHOLD ↑ to t PWRMONI changeover at having reached ±0.5%

RPHOLD ↓ to t PWRMONI changeover at having reached ±0.5%

RPHOLD ↑ to mask signal

Mask signal width at t

RPHOLD ↑ RPHOLD ↓ to mask signal

Mask signal width at t

RPHOLD ↑

RPHOLD ↓ to t

AAFRST signal ↑ AAFRST signal width Shunt circuit "on" Shunt circuit "off"

Note)*3: Measure at DACMONI pin.

4: Measuring is impossible outside the IC.

5: Measuring is impossible outside the IC.

The values of t46, t48 and t

6: Measuring is impossible outside the IC. The built-in resistor Rin2 (10 kΩ, allowance: 10%) and the external C2.

are determined by the built-in resistor Rin1 (10 kΩ, allowance: 10%) and the external C1.

212

Playback → recording ±0.5%,  200 400 ns

Recording → playback ±0.5%,  250 500 addr "9": D4 = "1" × 5

XWR ↑ to LPF "off"  0.8 2.0 µs

XWR ↑ to LPF "on"  250 600 ns

XWR ↑ to AAF "off"  60 200 ns

XWR ↑ to AAF "on"  20 200 ns

XWR ↑ to DAC6 ±0.5%  0.9 2.5 µs

207

XWR ↑ to DAC5 ±0.5%  0.9 2.5 µs

208

XWR ↑ to shunt circuit "on", 430 ns

LDERR register "1"

XWR ↑ to shunt circuit "off", 230 ns

LDERR register "0"

RPHOLD ↑ to × 1,  0.4 0.9 µs

RPHOLD ↓ to × 10, AAF,  0.4 0.9 µs

RPHOLD ↑ to mask signal ↓15 30 ns

Mask signal ↓ to mask signal ↑1 1.1 µs

at RPHOLD high

RPHOLD ↓ to mask signal ↓15 30 ns

Mask signal ↓ to mask signal ↑1 1.1 µs

at RPHOLD low RPHOLD ↓ to AAFRST ↑15 30 ns

211

AAFRST ↑ to AAFRST ↓2 2.2 µs

212

XCLR ↓ to shunt circuit "on" 430 ns

XCLR ↑ to shunt circuit "off" 230 ns

Page 20

AN8725FH ICs for Optical Disk Drive

■ Electrical Characteristics at VCC = 5.0 V, Ta = 25°C (continued)

• Design reference data (continued)

Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.

Parameter Symbol Conditions Min Typ Max Unit

Control operation response Input → output (continued)

AAF reset "reset" AAF reset "normal" Mask signal (wrt. ERFIL)

Mode changeover t AAFRST t Mode changeover t SW6 t Mode changeover t XFHON t Mode changeover t SW2 t Mode changeover t SW3 t Mode changeover t SW1 t Mode changeover t LEVSW t Test mode operation t AAF filter Test mode operation t Current amplification changeover t

Test mode operation t XHFON t Test mode operation t

SW2

Note)*6: Measuring is impossible outside the IC. The built-in resistor Rin2 (10 kΩ, allowance: 10%) and the external C2.

7: Measuring is impossible outside the IC.

8: No external fitting until on/off of switch.

9: Set the data to "7Fh".

AAFRST ↑ to AAF "reset" 200 ns

213

AAFRST ↓ to AAF "normal" 200 ns

214

ERFIL ↑ to XLDERR1 ↓1.2 2.0 µs

215

ERFIL ↓ to XLDERR1 ↑15  ns

216

XWR ↑ to AAFRST test mode  25 60 ns

XWR ↑ to AAFRST normal mode  200 400

XWR ↑ to SW6 test mode  90 200 ns

XWR ↑ to SW6 normal mode  60 150

XWR ↑ to XHFON test mode  20 60 ns

XWR ↑ to XHFON normal mode  25 70

XWR ↑ to SW2 test mode  30 80 ns

XWR ↑ to SW2 normal mode  20 50

XWR ↑ to SW3 test mode  30 70 ns

XWR ↑ to SW3 normal mode  20 50

XWR ↑ to SW1 test mode  20 50 ns

XWR ↑ to SW1 normal mode  35 100

XWR ↑ to LEVSW test mode  0.55 2.0 µs

XWR ↑ to LEVSW normal mode  0.35 1.0

XWR ↑ to AAF filter reset  25 100 ns

XWR ↑ to AAF filter normal  200 400

XWR ↑ to × 1, when reaching ±0.5%  0.4 0.9 µs

XWR ↑ to × 10,  0.4 0.9

when reaching AAF ±0.5% XWR ↑ to XHFON ↑20 60 ns

XWR ↑ to XHFON ↓25 70

XWR ↑ to SW2 "on" DAC2 ±2.0 LSB  90 200 ns

XWR ↑ to SW2 "on" DAC2 × 50%  30 80

81A

XWR ↑ to SW2 "off" 0 mA ±2.0 LSB  50 150

XWR ↑ to SW2 "on" DAC2 × 50%  20 60

82A

Page 21

ICs for Optical Disk Drive AN8725FH

■ Electrical Characteristics at VCC = 5.0 V, Ta = 25°C (continued)

• Design reference data (continued)

Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.

Parameter Symbol Conditions Min Typ Max Unit

Test mode operation SW3

Test mode operation SW1

Test mode operation DAC5 t

Test mode operation DAC6 t

Note)*9 : Data sets up "7Fh".

*10:DAC1 = 7 Fh, DAC9 = 00 h, DAC7 = 0h, DAC8 = Fh

XWR ↑ to SW3 "on" DAC3 ±2.0 LSB  330 600 ns

XWR ↑ to SW3 "on" DAC3 × 50%  30 80

83A

XWR ↑ to SW3 "off" 0 mA ±2.0 LSB  50 150

XWR ↑ to SW3 "on" DAC3 × 50%  20 60

84A

XWR ↑ to SW1 "off"  20 100 ns

XWR ↑ to SW1 "on"  35 150

XWR ↑ to DAC5 W,  1.0 2.5 µs

at having reached ±0.5 LSB XWR ↑ to DAC5 R,  0.7 2.5

at having reached ±0.5 LSB XWR ↑ to DAC6 W,  1.0 2.5 µs

at having reached ±0.5 LSB

XWR ↑ to DAC6 R,  0.7 2.5

at having reached ±0.5 LSB

■ Terminal Equivalent Circuits

Pin No. Symbol Equivalent circuit

1 Pin 1: SGND  2 Pin 2: DGND 3 Pin 3: DGND

4 Pin 4: PKMD 5 Pin 5: BIMD 6 Pin 6: RPHOLD

7 Pin 7: XWR 8 Pin 8: XRD

Pin 4, 5, 6, 11,

12, 13, 14, 27

Pin 7, 8, 26

100 kΩ

5 kΩ

DGND

Page 22

AN8725FH ICs for Optical Disk Drive

■ Terminal Equivalent Circuits (continued)

Pin No. Symbol Equivalent circuit

9DV

10 DGND  11 Pin 11: AD0 Refer to pin 4

12 Pin 12: AD1 13 Pin 13: AD2

14 Pin 14: AD3

Pin 9, 34

DGND

15 Pin 15: DT0 16 Pin 16: DT1 17 Pin 17: DT2 18 Pin 18: DT3

Pin 15, 16, 17,

18, 22, 23,

24, 25

19 Pin 19: DGND  20 Pin 20: SGND

21 Pin 21: SGND 22 Pin 22: DT4 Refer to pin 15

23 Pin 23: DT5 24 Pin 24: DT6

25 Pin 25: DT7 26 XLDEN Refer to pin 7 27 XCLR Refer to pin 4 28 DGND 

DGND DV

DGND

29 XLDERR

Pin 29, 32

DGND

Page 23

ICs for Optical Disk Drive AN8725FH

■ Terminal Equivalent Circuits (continued)

Pin No. Symbol Equivalent circuit

30 Pin 30: PWMSK 31 Pin 31: ERFIL

Schmitt-trigger

Pin 30, 31

10 kΩ

32 XHFON Refer to pin 29 33 DGND  34 DV

Refer to pin 9

35 AGND  36 VC

50 Ω

37 RREF

DGND

AGND

38 LPF11

AGND

Pin 38, 43

IGND

Page 24

AN8725FH ICs for Optical Disk Drive

■ Terminal Equivalent Circuits (continued)

Pin No. Symbol Equivalent circuit

39 LPF12

Pin 39, 44

40 Pim 40: IGND  41 Pim 41: SGND

42 Pim 42: SGND 43 LPF91 Refer to pin 38 44 LPF92 Refer to pin 39

IGND

45 AV

46 DETMONI

47 PWRMONI

Pin 45, 58

50 49 48

AGND

CV AV

CGND

Page 25

ICs for Optical Disk Drive AN8725FH

■ Terminal Equivalent Circuits (continued)

Pin No. Symbol Equivalent circuit

48 AAF

50 49

CGND

49 IVOUT

50 IVIN

51 IPD

CV AV

CGND

52 CGND 

CGND

Page 26

AN8725FH ICs for Optical Disk Drive

■ Terminal Equivalent Circuits (continued)

Pin No. Symbol Equivalent circuit

53 CV

54 AGND 

CGND

55 Pim 55: ERREF 56 Pim 56: VNR

Pin55, 56

57 DACMONI

58 AV

Refer to pin 45

59 Pim 59: SGND  60 Pim 60: SGND 61 Pim 61: SGND

62 Pim 62: RGND

AGND

63 Pim 63: RDCP1 64 Pim 64: RDCP2

Pin63, 64

RGND

Page 27

ICs for Optical Disk Drive AN8725FH

■ Terminal Equivalent Circuits (continued)

Pin No. Symbol Equivalent circuit

65 LDRP

66 N.C.  67 N.C. 

SGND

68 RV

69 LDPK

70 XLDPK

Pin 70, 75

RGND

Pin 69, 74

SGND PBGND

69 74

SGND

Page 28

AN8725FH ICs for Optical Disk Drive

■ Terminal Equivalent Circuits (continued)

Pin No. Symbol Equivalent circuit

71 PKGND  72 PKV

Pin 72

PKV BIV

73 PKDCP

74 LDBI Refer to pin 69 75 XLDBI Refer to pin 70 76 BIGND  77 BIV

Refer to pin 72

78 BIDCP Refer to pin 73 79 SGND  80 SGND 

SGND

Pin 73, 78

SGND PBGND

■ Application Notes

1. PD  Ta curves of QFP080-P-1212

2.000

1.920

1.800

1.600

1.400

(W)

1.200

1.000

0.800

0.600

Power dissipation P

0.400

0.200

0.000 0

Mounted on standard board (glass epoxy: 75 mm × 75 mm × t0.8 mm)

= 65.1°C/W

th(j-a)

Independent IC without a heat shink

= 125.0°C/W

th(j-a)

25 50

Ambient temperature Ta (°C)

75 100 125 150

Page 29

ICs for Optical Disk Drive AN8725FH

■ Application Notes (continued)

2. Timing chart

1) Definition of rising and falling

2) Interface

90% 90%

10% 10%

In write

In read

AD0

Write address

to AD3

DT0 to DT7

XWR

XRD

Parameter Symbol Conditions Min Typ Max Unit

Switching characteristics t

Pulse width t

Setup time t

Hold time t

Read address

Write data

Read data

10% to 90% 10 ns 90% to 10% 10 XWR ↓ to XWR ↑ 50  ns XRD ↓ to XRD ↑ 70  AD defined to XWR ↓ 10  ns DT defined to XWR ↑ 35  AD defined to XRD ↓ 10  XRD ↓ to DT defined 50 XWR ↑ to AD released 0  ns XWR ↑ to DT released 0  XRD ↑ to AD released 0  XRD ↑ to DT released 0  30

Page 30

AN8725FH ICs for Optical Disk Drive

■ Application Notes (continued)

3. I/O specifications

• Parallel interface

1) I/O level is CMOS.

2) Transfers a digital signal to DAC and each mode setting register with 4 addresses, 8 data and 2 control signals. Address signal AD0 to AD3 Data signal DT0 to DT7 Control signal XWR, XRD

3) Write can be done at the rise of XWR.

However, selection of a write register can be done at the fall of XWR. DAC and register data are stored at D-FF.

4) Read appears on DT0 to DT7 at XRD = low.

5) Refer to "■ Application Notes, 2. Timing chart" for the timing chart.

6) Each signal line is pulled up and down as below: Pull-down to GND with 100 kΩ AD0 to AD3

DT0 to DT7

Pull-up to VCC with 100 kΩ XWR

WRD

Page 31

ICs for Optical Disk Drive AN8725FH

■ Application Notes (continued)

4. Signal flow

AD0 to AD3

XWR

XRD

DT0 to DT7

WR0

RD0

WR1

RD1

WR2

RD2

WR3

RD3

WR4

RD4

WR5

RD5

WR6

RD6

WR7

RD7

WR8

RD8

WR9

RD9

WRA

RDA

WRB

RDB

WRC

RDC

WRE

RDE

WRF

RDF

DAC78

"0" register

DAC1

"1" register

DAC2

"2" register

DAC3

"3" register

DAC4

"4" register

DAC56R

"5" register

DAC56W

"6" register

CNTL1

"7" register

CNTL2

"8" register

CNTL3

"9" register

ERRMSK

"A" register

4 4

DAC7 DAC8

DAC1

DAC2

DAC3

DAC4

DAC5

DAC6

ERRFAC

"B" register

DAC9

"C" register

DUMY

"E" register

LDDENB

"F" register

DAC9

Page 32

AN8725FH ICs for Optical Disk Drive

■ Application Notes (continued)

5. Register circuit configuration

1) DAC1, DAC2, DAC3, DAC4, DAC9

D-FF

DT0 to DT 7

WR*

RD*

2) DAC7, DAC8

8-bit

White DAC* (0 to 7)

8-bit

Read DAC* (0 to 7)

3-state

driver

D-FF

8-bit

DAC* (0 to 7)

8-bit

DAC* (0 to 7)

DAC*

Analog output

DT0 to DT 7

WR0

RD0

8-bit

White DAC78 (0 to 7)

8-bit

Read DAC78 (0 to 7)

3-state

driver

DAC78 (0 to 7)

8-bit

4-bit

DAC78 (4 to 7)

4-bit

DAC78 (0 to 3)

DAC7

4-bit

DAC8

4-bit

Page 33

ICs for Optical Disk Drive AN8725FH

■ Application Notes (continued)

5. Register circuit configuration (continued)

3) DAC56R, DAC56W

DT0 to DT7

WR5

RD5

8-bit

White data (0 to 7)

8-bit

Read data (0 to 7)

8-bit

White data (0 to 7)

D-FF

Data (0 to 7)

3-state

driver

D-FF

8-bit

Selector

RPHOLD = low

output A

RPHOLD = high

output B

Data (0 to 3)

Data (4 to 7)

Insufficiently

emitted light

DAC5

4-bit

Excessively

emitted light

DAC6

4-bit

WR6

RD6

RPHOLD

8-bit

Read data (0 to 7)

3-state

driver

8-bit

Data (0 to 7)

Page 34

AN8725FH ICs for Optical Disk Drive

■ Application Notes (continued)

5. Register circuit configuration (continued)

4) CNTL1, CNTL2, CNTL3, ERRMSK, ERRFAC, DUMY, LDDENB

D-FF

DT0 to DT7

WR*

RD*

8-bit

White data (0 to 7)

8-bit

Read data (0 to 7)

3-state

driver

Data (0 to 7)

8-bit

Each control

circuit

8-bit

Page 35

ICs for Optical Disk Drive AN8725FH

■ Application Circuit Example

PWRMONI

DETMONI

DT0

AD3

DT1

LPF92

DT2

LPF91

DT3

SGND

DGND

SGND

40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21

IGND LPF12

RREF VC AGND DV

DGND XHFON

DGND XCLR XLDEN DT7 DT6 DT5 DT4 SGND

LPF11

C2 C1

R1 C4

ERFIL (Rin2) PWMSK (Rin1)

XLDERR

CGND

IPD

IVIN

IVOUT

AAF

1011121314151617181920

AD1

AD0

C19

DGND

AD2

VNR

ERREF

AGND

C10

C11

SGND

DACMONI

60595857565554535251504948474645444342

SGND

RGND

R7 R9

C14

C15

C16 tantalum

C17

C18 tantalum

RDCP1 RDCP2

LDRP

LDPK XLDPK PKGND

PKV

PKDCP

XLDBI BIGND

BIV

BIDCP SGND SGND

N.C. N.C.

LDBI

64 65 66 67 68

69 70 71 72

73 74 75 76 77

78 79 80

C12

C13

R10

R11

123456789

XRD

XWR

DGND

PKMD

BIMD

RPHOLD

SGND

Page 36

AN8725FH ICs for Optical Disk Drive

■ Application Circuit Example (continued)

• Resistance and capacitance Symbol Resistor value Unit

R1 10 kΩ R2  R3  R4  R5 1 kΩ R6 10 kΩ R7 82 Ω R8 10 kΩ

R9 82 Ω R10 3 Ω R11 3 Ω

(Rin1) 10 kΩ (Rin2) 10 kΩ

Symbol Resistor value Unit

C1 220 pF C2 100 pF C3 0.1 µF C4 0.01 µF C5  C6  C7 0.1 µF C8  C9 18 pF

C10 0.1 µF C11 0.1 µF C12 5 600 pF C13 5 600 pF C14 0.1 µF C15 0.1 µF C16 1 µF C17 0.1 µF C18 1 µF C19 0.1 µF