DATA SHEET Part No. AN41908A Package Code No. ∗QFN044-P-0606D Publication date: February 2010 SDB00179AEB 1 AN41908A Contents Overview …………………………………………………………………………………………………………… 3 Features …………………………………………………………………………………………………………… 3 Applications ………………………………………………….…………………………………………………….. 3 Package …………………………………………………………………………………………………………… 3 Type ……………………………………………………….…………………………………………………………. 3 Application Circuit Example ……………………………………………………………………………………… 4 Block Diagram ……………………………………………….……………………………………………………. 5 Pin Descriptions ………………………………………….………………………………………………………… 6 Absolute Maximum Ratings ……………………………….……………………………………………………… 8 Operating Supply Voltage Range …………………….…………………………………………………………… 8 Allowable Current and Voltage Range ………………………………………………………………………….. 9 Electrical Characteristics …………….…………………………………………………………………………… 10 Electrical Characteristics (Reference values for design) ……………………………………………………… 12 Technical Data ………………………………………….…………………………………………………………… 14 y I/O block circuit diagrams and pin function descriptions y PD ⎯ Ta diagram …………………………………………………….. 14 ………………………………………………………………………………………………… 25 Usage Notes ………………………………………….……………………………………………………………. 26 y Special attention and precaution in using ………………………………………………………………………. 26 y Notes of Power LSI ………………………………………………………………………………………………. 27 SDB00179AEB 2 AN41908A AN41908A Lens Driver IC for camcorder and security-camera incorporating Iris control Overview AN41908A is a lens motor driver IC for camcorder and security-camera featuring the functions of Iris control. Voltage drive system and several torque ripple correction techniques enable super- low noise microstep drive. Features y Voltage drive system 256-step microstep drivers (2 systems) y Built-in Iris controller y Motor control by 4-line serial data communication y 2 systems of open-drain for driving LED Applications y Camcorder, Security-camera Package y 44 pin Plastic Quad Flat Non-leaded Package (QFN Type) Type y Bi-COMS IC SDB00179AEB 3 AN41908A Application Circuit Example V+ H+ AVDD3 (3.1 V) M 34 SIN 35 VD_IS 36 VD_FZ 37 PLS1 38 PLS2 39 RSTB 0.1 μF 40 GNDA 44 OP4OUT 0.01 μF 41 CREFIN V– 42 VREF 100 pF Hall Sensor 0.1 μF H– 43 OP4INN 8.2 kΩ OP3INP 1 33 SCK SENS 2 32 CS OP3OUT 3 31 SOUT REF 4 30 DVDD AVDD3 5 29 OSCIN ADTESTIN 6 28 GNDD TEST 7 27 LED2 OUTE2 8 26 LED1 VDD5 9 25 OUTA1 10 kΩ VDD5 (4.8 V) 24 MGNDA GND5 10 23 N.C. OUTA2 22 OUTB1 21 MVCCA 20 OUTB2 19 OUTC1 18 MGNDB 17 OUTC2 16 OUTD1 15 MVCCB 14 OUTD2 13 N.C. 12 OUTE1 11 MVCCB (4.8 V) DVDD (3.1 V) MVCCA (4.8 V) Note) This application circuit is shown as an example but does not guarantee the design for mass production set. SDB00179AEB 4 AN41908A 34 SIN 35 VD_IS 36 VD_FZ 37 PLS1 38 PLS2 39 RSTB 40 GNDA 41 CREFIN 42 VREF 43 OP4INN 44 OP4OUT Block Diagram Pulse generator OP3INP 1 SENS 2 OP3OUT 33 SCK 32 CS AVDD3 (3.1 V) 3 SIF 31 SOUT control logic UVLO REF 4 AVDD3 5 ADTESTIN 6 TEST 7 8 bit DAC 8-bit Current Adj 10 bit ADC 29 OSCIN 28 GNDD 27 LED2 LED Dr. TSD OUTE2 8 VDD5 9 GND5 10 30 DVDD Driver A to D PWM Duty Control IRIS Driver 26 LED1 25 OUTA1 24 MGNDA OUTE1 11 23 N.C. Driver A OUTA2 22 OUTB1 21 MVCCA 20 Driver B OUTB2 19 OUTC1 18 MGNDB 17 OUTC2 16 Driver C OUTD1 15 MVCCB 14 OUTD2 13 N.C. 12 Driver D Note) This block diagram is for explaining functions. The part of the block diagram may be omitted, or it may be simplified. SDB00179AEB 5 AN41908A Pin Descriptions Pin No. Pin name Type Input Description 1 OP3INP 2 SENS Output Hall current bias output 3 OP3OUT Output Hall signal amplifier output 4 REF 5 AVDD3 6 ADTESTIN Input ADC test input 7 TEST Input Test mode input 8 OUTE2 Output Motor output E2 9 VDD5 Power supply 10 GND5 Ground GND for Iris 11 OUTE1 Output Motor output E1 12 N.C. 13 OUTD2 Output 14 MVCCB Power supply 15 OUTD1 Output Motor output D1 16 OUTC2 Output Motor output C2 17 MGNDB Ground GND for motor B 18 OUTC1 Output Motor output C1 19 OUTB2 Output Motor output B2 20 MVCCA Power supply 21 OUTB1 Output Motor output B1 22 OUTA2 Output Motor output A2 23 N.C. 24 MGNDA Ground GND for motor A 25 OUTA1 Output Motor output A1 26 LED1 Input Open-drain 1 for driving LED 27 LED2 Input Open-drain 2 for driving LED 28 GNDD Ground Digital GND 29 OSCIN Input OSCIN input 30 DVDD Power supply 31 SOUT Output 32 CS Input Chip select signal input 33 SCK Input Serial clock input 34 SIN Input Serial data input 35 VD_IS Input Iris video sync. signal input — Power supply — — Hall signal amplifier non-inverting input Resistor connection for Hall current bias setting 3 V analog power supply Power supply for Iris N.C. Motor output D2 Power supply for motor B Power supply for motor A N.C. 3 V digital power supply Serial data output SDB00179AEB 6 AN41908A Pin Descriptions (continued) Pin No. Pin name Type Input Description 36 VD_FZ 37 PLS1 Output Pulse 1 output 38 PLS2 Output Pulse 2 output 39 RSTB Input Reset signal input 40 GNDA Ground 3 V analog GND 41 CREFIN 42 VREF 43 OP4INN Input 44 OP4OUT Output — Output Focus zoom sync. signal input (AVDD3)/2 capacitor connection pin Reference voltage for Hall sensor Midpoint bias amplifier inverting input Midpoint bias amplifier output SDB00179AEB 7 AN41908A Absolute Maximum Ratings Note) Absolute maximum ratings are limit values which do not result in damages to this IC, and IC operation is not guaranteed at these limit values. A No. 1 Parameter Symbol Rating AVDD3 – 0.3 to + 4.0 DVDD – 0.3 to + 4.0 Controller supply voltage Unit Notes V *1 2 Supply voltage for motor controller 1 MVCCx – 0.3 to + 6.0 V *1 3 Supply voltage for motor controller 2 VDD5 – 0.3 to + 6.0 V *1 4 Power dissipation PD 141.4 mW *2 5 Operating ambient temperature Topr –20 to + 85 °C *3 6 Storage temperature Tstg –55 to + 125 °C *3 7 Motor driver 1 (focus, zoom) H bridge drive current IM1(CD) ±0.25 A/ch — 8 Motor driver 2 (iris) H bridge drive current IM2(CD) ±0.15 A/ch — 9 Instantaneous H bridge drive current IM(pulse) ±0.4 A/ch — 10 Digital input voltage Vin – 0.3 to (DVDD + 0.3) V *4 Notes) *1 : The values under the condition not exceeding the above absolute maximum ratings and the power dissipation. *2 : The power dissipation shown is the value at Ta = 85°C for the independent (unmounted) IC package without a heat sink. When using this IC, refer to the • PD-Ta diagram in the Technical Data and design the heat radiation with sufficient margin so that the allowable value might not be exceeded based on the conditions of power supply voltage, load, and ambient temperature. *3 : Except for the power dissipation, operating ambient temperature, and storage temperature, all ratings are for Ta = 25°C. *4 : (DVDD + 0.3 ) V must not be exceeded 4.0 V. Operating Supply Voltage Range Range Parameter Symbol Min Typ Max AVDD3 2.7 3.1 3.6 DVDD 2.7 3.1 3.6 MVCCx 3.0 4.8 5.5 VDD5 3.0 4.8 5.5 Supply voltage range Unit Notes V *1 Note) *1 : The values under the condition not exceeding the above absolute maximum ratings and the power dissipation. SDB00179AEB 8 AN41908A Allowable Current and Voltage Range Notes) y Allowable current and voltage ranges are limit ranges which do not result in damages to this IC, and IC operation is not guaranteed within these limit ranges. y Voltage values, unless otherwise specified, are with respect to GND. GND is voltage for GNDA, GNDD, GND5, MGNDA, and MGNDB. GND = GNDA = GNDD = GND5 = MGNDA = MGNDB y VCC3V is voltage for AVDD3 and DVDD. AVDD3 = DVDD y Do not apply external currents or voltages to any pin not specifically mentioned. y For the circuit currents, "+" denotes current flowing into the IC, and "–" denotes current flowing out of the IC. Pin No. Pin name Rating Unit Notes Pin No. Pin name Rating Unit Notes 1 OP3INP − 0.3 to (AVDD3 + 0.3) V *1 8 OUTE2 ±0.15 A — 6 ADTESTIN − 0.3 to (AVDD3 + 0.3) V *1 11 OUTE1 ±0.15 A — 7 TEST − 0.3 to (DVDD + 0.3) V *1 13 OUTD2 ±0.25 A — 29 OSCIN − 0.3 to (DVDD + 0.3) V *1 15 OUTD1 ±0.25 A — 32 CS − 0.3 to (DVDD + 0.3) V *1 16 OUTC2 ±0.25 A — 33 SCK − 0.3 to (DVDD + 0.3) V *1 18 OUTC1 ±0.25 A — 34 SIN − 0.3 to (DVDD + 0.3) V *1 19 OUTB2 ±0.25 A — 35 VD_IS − 0.3 to (DVDD + 0.3) V *1 21 OUTB1 ±0.25 A — 36 VD_FZ − 0.3 to (DVDD + 0.3) V *1 22 OUTA2 ±0.25 A — 39 RSTB − 0.3 to (DVDD + 0.3) V *1 25 OUTA1 ±0.25 A — 43 OP4INN − 0.3 to (AVDD3 + 0.3) V *1 26 LED1 30 mA — 27 LED2 30 mA — Note) *1 : (AVDD3 + 0.3) V must not be exceeded 4.0 V, and (DVDD + 0.3) V must not be exceeded 4.0 V. SDB00179AEB 9 AN41908A Electrical Characteristics at VDD5 = MVCCx = 4.8 V, DVDD = AVDD3 = 3.1 V Note) Ta = 25°C±2°C unless otherwise specified. Limits B No. Parameter Symbol Unit Notes 3.0 μA — Conditions Typ Max — 0 Min Current circuit, Common circuit IOmdisable No load, no 27 MHz input P1 MVCC supply current on Reset P2 MVCC supply current on Enable Imenable Output open — 0.5 1.5 mA — P3 3 V supply current on Reset Icc3reset No 27 MHz input — 0 10.0 μA — P4 3 V supply current on Enable Icc3enable Output open — 7.0 20.0 mA — P5 VDD5 supply current on Reset Icc5reset — 0 3.0 μA — P6 VDD5 supply current on Enable Icc5enable Output open — 0.3 1.0 mA — P7 Supply current on Standby RSTB = High, output open, Iccstandby 27 MHz input, Total current — 5.0 10.0 mA — P8 Supply current when FZ is Enable and Iris is in power save mode — 6.0 12.0 mA — No 27 MHz input Iccps RSTB = High, output open, 27 MHz input, FZ = Enable, Total current Digital input / output D1 High-level input Vin(H) RSTB 0.54 × DVDD — DVDD + 0.3 V — D2 Low-level input Vin(L) RSTB – 0.3 — 0.2 × DVDD V — D3 SOUT High-level output DVDD – 0.5 — — V — D4 SOUT Low-level output — — 0.5 V — — 0.9 × DVDD — — V — — — — 0.1 × DVDD V — Vout(H) : SDATA Vout(L) : [SOUT] 1 mA Source [SOUT] 1 mA Sink SDATA D5 D6 D7 PLS1 to 2 High-level output Vout(H) : PLS1 to 2 Low-level output Vout(L) : Input pull-down resistance Rpullret RSTB 50 100 200 kΩ — IM = 100 mA — — 2.5 Ω — — — 0.8 μA — — — 5 Ω — — — 0.8 μA — — — 8 Ω — — — 0.8 μA — MUX MUX Motor driver 1 (focus, zoom) H1 H bridge ON resistance RonFZ H2 H bridge leak current IleakFZ — Motor driver 2 (iris) H3 H bridge ON resistance RonIR H4 H bridge leak current IleakIR IM = 50 mA — LED driver L1 Output ON resistance RonLED L2 Output leak current IleakLED I = 20 mA, 5 V cell — SDB00179AEB 10 AN41908A Electrical Characteristics (continued) at VDD5 = MVCCx = 4.8 V, DVDD = AVDD3 = 3.1 V Note) Ta = 25°C±2°C unless otherwise specified. Limits B No. Parameter Symbol Conditions Min Typ Unit Notes V — Max OPAMP3 (HALL Sensor Amp. for output amplifier) O1 Input voltage range VIN — O2 Input offset voltage VOF — O3 Output voltage (Low) VOL O4 Output voltage (High) O5 Gain ½ AVDD3 ½ AVDD3 ½ AVDD3 – 0.5 + 0.5 –15 — 15 mV — ILOAD = –100 μA — 0.1 0.2 V — VOH ILOAD = 100 μA AVDD3 – 0.2 AVDD3 – 0.1 — V — VOG Gain setting value : 0h 19.7 21.9 24.1 V/V — OPAMP4 (HALL Sensor Amp. for eliminating common-mode voltage) O6 Input voltage range VIN — ½ AVDD3 – 0.1 — ½ AVDD3 + 0.1 V — O7 Input offset voltage VOF — –10 — 10 mV — O8 Output voltage (Low) VOL ILOAD = –10 μA — 0.1 0.2 V — O9 Output voltage (High) VOH ILOAD = 3 mA AVDD3 – 0.5 AVDD3 – 0.2 — V — V — Reference voltage output block O10 Output voltage 1 VREF O11 Output voltage 2 VREFL ILOAD = 0 A, CVREF = 100 pF ½ AVDD3 ½ AVDD3 ½ AVDD3 – 0.1 + 0.1 ILOAD = ±100 μA, CVREF = 100 pF VREF – 0.1 VREF VREF + 0.1 V — IBL REF = 10 kΩ, SENS = 0.7 V Setting value : 00 h — 0 0.1 mA — O13 Output current accuracy 1 IB40H REF = 10 kΩ, SENS = 0.7 V Setting value : 40 h 0.9 1.02 1.14 mA — O14 Output current accuracy 2 IBBFH REF = 10 kΩ, SENS = 0.7 V Setting value : BE h 2.66 3.02 3.38 mA — Hall bias controller (SENS pin output) O12 Min. output current SDB00179AEB 11 AN41908A Electrical Characteristics (Reference values for design) at VDD5 = MVCCx = 4.8 V, DVDD = AVDD3 = 3.1 V Notes) Ta = 25°C±2°C unless otherwise specified. The characteristics listed below are reference values derived from the design of the IC and are not guaranteed by inspection. If a problem does occur related to these characteristics, we will respond in good faith to user concerns. Reference values B No. Parameter Symbol Conditions Min Typ Max Unit Notes Serial port input S1 Serial clock Sclock — 1 — 5 MHz — S2 SCK low time T1 — 100 — — ns — S3 SCK high time T2 — 100 — — ns — S4 CS setup time T3 — 60 — — ns — S5 CS hold time T4 — 60 — — ns — S6 CS disable high time T5 — 100 — — ns — S7 SIN setup time T6 — 50 — — ns — S8 SIN hold time T7 — 50 — — ns — S9 SOUT delay time T8 — — — 60 ns — S10 SOUT hold time T9 — 60 — — ns — S11 SOUT Enable-Hi-Z time T10 — — — 60 ns — S12 SOUT Hi-Z-Enable time T11 — — — 60 ns — S13 SOUT C load TSC — — — 40 pF — Digital input / output D8 High-level input threshold voltage Vin(H) SCK, SIN, CS, OSCIN, VD_IS, VD_FZ, TEST — 1.36 — V — D9 Low-level input threshold voltage Vin(L) SCK, SIN, CS, OSCIN, VD_IS, VD_FZ, TEST — 1.02 — V — D10 RSTB signal pulse width Trst — 100 — — μs — D11 Input hysteresis width Vhysin SCK, SIN, CS, OSCIN, VD_IS, VD_FZ, TEST — 0.34 — V — D12 Video sync. signal width VDW — 80 — — μs — D13 CS signal wait time 1 T(VD-CS) — 400 — — ns — D14 CS signal wait time 2 T(CS-DT1) — 5 — — μs — SDB00179AEB 12 AN41908A Electrical Characteristics (Reference values for design) (continued) at VDD5 = MVCCx = 4.8 V, DVDD = AVDD3 = 3.1 V Notes) Ta = 25°C±2°C unless otherwise specified. The characteristics listed below are reference values derived from the design of the IC and are not guaranteed by inspection. If a problem does occur related to these characteristics, we will respond in good faith to user concerns. Reference values B No. Parameter Symbol Conditions Min Typ Max Unit Notes Pulse generator PL1 Pulse start resolution for pulse 1 PL1wait OSCIN = 27 MHz — 20.1 — μs — PL2 Pulse resolution for pulse 1 PL1width OSCIN = 27 MHz — 1.2 — μs — PL3 Pulse start resolution for pulse 2 PL2wait OSCIN = 27 MHz — 20.1 — μs — IRISSample OSCIN = 27 MHz — 500 — kHz — Iris control IR1 AD sampling frequency Thermal shutdown T1 Thermal shutdown operation temperature Ttsd — — 150 — °C — T2 Thermal shutdown hysteresis width ΔTtsd — — 40 — °C — Supply voltage monitor circuit R1 3.3 V Reset operation Vrston — — 2.27 — V — R2 3.3 V Reset hysteresis width Vrsthys — — 0.2 — V — R3 MVCCx Reset operation VrstFZon — — 2.2 — V — R4 MVCCx Reset hysteresis width VrstFZhys — — 0.2 — V — R5 VDD5 Reset operation VrstISon — — 2.2 — V — R6 VDD5 Reset hysteresis width VrstIShys — — 0.2 — V — DA1 Adjustment range (High) DAOTHof — — AVDD3 — V — DA2 Adjustment range (Low) DAOTLof — — 0 — V — AD1 Input Range (High) Vin(H) — — — AVDD3 – 0.2 V — AD2 Input Range (Low) Vin(L) — 0.2 — — V — DNL10A — — 1.0 — LSB — INL10A — — 2.0 — LSB — 8 bit DAC for Hall Offset adjustment 10 bit ADC AD3 DNLE (Differential linearity error) AD4 INLE (Integral linearity error) SDB00179AEB 13 AN41908A Technical Data y I/O block circuit diagrams and pin function descriptions Note) The characteristics listed below are reference values derived from the design of the IC and are not guaranteed. Pin No. Waveform and voltage Internal circuit Impedance Description — OP3INP Hall signal amplifier non-inverting input pin — SENS Hall current bias output pin — OP3OUT Hall amp. output pin — REF Resistor pin for Hall bias AVDD3 1 — 1 GNDA AVDD3 2 2 ― GNDA GNDA 1k AVDD3 AVDD3 3 Hall signal amplifier output 125 3 100k GNDA GNDA GNDA AVDD3 AVDD3 4 — 50 4 GNDA SDB00179AEB 14 AN41908A Technical Data (continued) y I/O block circuit diagrams and pin function descriptions (continued) Note) The characteristics listed below are reference values derived from the design of the IC and are not guaranteed. Pin No. Waveform and voltage Internal circuit Impedance Description 5 5 AVDD3 — AVDD3 3 V analog power supply pin — ADTESTIN ADC test input pin GNDA AVDD3 6 — 6 GNDA DVDD DVDD 7 10 kΩ TEST Test mode input pin TEST 10k 7 GNDD to DVDD Logic signal input GNDD GNDD GNDD 9 8 11 ― 8 — OUTE2 Iris output pin 0 10 SDB00179AEB 15 AN41908A Technical Data (continued) y I/O block circuit diagrams and pin function descriptions (continued) Note) The characteristics listed below are reference values derived from the design of the IC and are not guaranteed. Pin No. Waveform and voltage Internal circuit Impedance Description 9 9 VDD5 — VDD5 5 V power supply pin — GND5 5V GND pin — OUTE1 Iris output pin 1 — N.C. GND5 10 10 GND5 9 11 11 ― 8 10 12 ― ― SDB00179AEB 16 AN41908A Technical Data (continued) y I/O block circuit diagrams and pin function descriptions (continued) Note) The characteristics listed below are reference values derived from the design of the IC and are not guaranteed. Pin No. Waveform and voltage Internal circuit Impedance Description 14 13 13 ― 15 — OUTD2 Motor output pin D2 — MVCCB Power supply pin for motor B 17 14 MVCCB — 14 15 ― 13 15 — OUTD1 Motor output pin D1 16 18 — OUTC2 Motor output pin C2 17 14 16 ― 17 SDB00179AEB 17 AN41908A Technical Data (continued) y I/O block circuit diagrams and pin function descriptions (continued) Note) The characteristics listed below are reference values derived from the design of the IC and are not guaranteed. Pin No. Waveform and voltage Internal circuit Impedance Description 17 17 MGNDB — MGNDB GND pin for motor B 14 18 ― 16 18 — OUTC1 Motor output pin C1 21 19 — OUTB2 Motor output pin B2 — MVCCA Power supply pin for motor A 17 20 19 ― 24 20 ― ― SDB00179AEB 18 AN41908A Technical Data (continued) y I/O block circuit diagrams and pin function descriptions (continued) Note) The characteristics listed below are reference values derived from the design of the IC and are not guaranteed. Pin No. Waveform and voltage Internal circuit Impedance Description 20 21 ― 21 19 — OUTB1 Motor output pin B1 25 22 — OUTA2 Motor output pin A2 — N.C. — MGNDA GND pin for motor A 24 20 22 ― 24 23 ― 24 MGNDA ― 24 SDB00179AEB 19 AN41908A Technical Data (continued) y I/O block circuit diagrams and pin function descriptions (continued) Note) The characteristics listed below are reference values derived from the design of the IC and are not guaranteed. Pin No. Waveform and voltage Internal circuit Impedance Description 20 25 25 — 22 — OUTA1 Motor output pin A1 24 26 26 Hi-Z or open-drain output 8k 205k MGNDA Serial selection Hi-Z Max. 8 Ω LED1 Open-drain 1 for driving LED Serial selection Hi-Z Max. 8 Ω LED2 Open-drain 2 for driving LED GNDD 27 27 8k Hi-Z or open-drain output 205k MGNDA 28 GNDD GNDD 28 — SDB00179AEB GNDD Digital GND pin 20 AN41908A Technical Data (continued) y I/O block circuit diagrams and pin function descriptions (continued) Note) The characteristics listed below are reference values derived from the design of the IC and are not guaranteed. Pin No. Waveform and voltage Internal circuit DVDD 29 GNDD to DVDD logic signal input Impedance Description DVDD 1k 29 Hi-Z GNDD OSCIN OSCIN input pin (Schmidt) GNDD 30 30 DVDD — DVDD 3 V digital power supply pin — SOUT Serial data output pin GNDD DVDD 31 DVDD GNDD to DVDD logic signal output / Hi-Z 31 GNDD GNDD DVDD 32 GNDD to DVDD logic signal input DVDD 1k 32 GNDD Hi-Z CS Chip select signal input pin (Schmidt) GNDD SDB00179AEB 21 AN41908A Technical Data (continued) y I/O block circuit diagrams and pin function descriptions (continued) Note) The characteristics listed below are reference values derived from the design of the IC and are not guaranteed. Pin No. Waveform and voltage Internal circuit DVDD 33 GNDD to DVDD logic signal input 33 34 GNDD DVDD 1k 35 Hi-Z DVDD 1k 36 GNDD VD_IS VD_IS input pin (Schmidt) GNDD DVDD 36 SIN Serial data input pin (Schmidt) 1k GNDD GNDD to DVDD logic signal input Hi-Z DVDD DVDD 35 SCK Serial clock input pin (Schmidt) GNDD GNDD GNDD to DVDD logic signal input Hi-Z 1k DVDD 34 Description DVDD GNDD GNDD to DVDD logic signal input Impedance Hi-Z VD_FZ VD_FZ input pin (Schmidt) GNDD SDB00179AEB 22 AN41908A Technical Data (continued) y I/O block circuit diagrams and pin function descriptions (continued) Note) The characteristics listed below are reference values derived from the design of the IC and are not guaranteed. Pin No. Waveform and voltage Internal circuit DVDD 37 DVDD 38 — PLS2 Pulse 2 output pin DVDD 39 100k 100 kΩ GNDD GNDA PLS1 Pulse 1 output pin GNDD GNDD 40 — DVDD GNDD to DVDD logic signal output Logic signal input 37 GNDD DVDD 39 Description DVDD GNDD to DVDD logic signal output GNDD 38 Impedance RSTB Reset signal input pin GNDD 40 — SDB00179AEB GNDA 3 V analog GND 23 AN41908A Technical Data (continued) y I/O block circuit diagrams and pin function descriptions (continued) Note) The characteristics listed below are reference values derived from the design of the IC and are not guaranteed. Pin No. Waveform and voltage Internal circuit AVDD3 Impedance Description 50k AVDD3 — 1k 41 25 kΩ CREFIN (AVDD3)/2 capacitor connection pin 50k 41 GNDA GNDA AVDD3 AVDD3 42 — — VREF Reference voltage for Hall sensor — OP4INN Midpoint bias amplifier non-inverting input pin — OP4OUT Midpoint bias amplifier output pin 100k 42 GNDA GNDA AVDD3 43 — 43 16k GNDA AVDD3 44 ― 16k 16k 16k AVDD3 44 GNDA GNDA SDB00179AEB 24 AN41908A Technical Data (continued) y PD ⎯ Ta diagram SDB00179AEB 25 AN41908A Usage Notes y Special attention and precaution in using 1. This IC is intended to be used for general electronic equipment [camcorder]. Consult our sales staff in advance for information on the following applications: x Special applications in which exceptional quality and reliability are required, or if the failure or malfunction of this IC may directly jeopardize life or harm the human body. x Any applications other than the standard applications intended. (1) Space appliance (such as artificial satellite, and rocket) (2) Traffic control equipment (such as for automobile, airplane, train, and ship) (3) Medical equipment for life support (4) Submarine transponder (5) Control equipment for power plant (6) Disaster prevention and security device (7) Weapon (8) Others : Applications of which reliability equivalent to (1) to (7) is required 2. Pay attention to the direction of LSI. When mounting it in the wrong direction onto the PCB (printed-circuit-board), it might smoke or ignite. 3. Pay attention in the PCB (printed-circuit-board) pattern layout in order to prevent damage due to short circuit between pins. In addition, refer to the Pin Description for the pin configuration. 4. Perform a visual inspection on the PCB before applying power, otherwise damage might happen due to problems such as a solderbridge between the pins of the semiconductor device. Also, perform a full technical verification on the assembly quality, because the same damage possibly can happen due to conductive substances, such as solder ball, that adhere to the LSI during transportation. 5. Take notice in the use of this product that it might break or occasionally smoke when an abnormal state occurs such as output pinVCC short (Power supply fault), output pin-GND short (Ground fault), or output-to-output-pin short (load short) . And, safety measures such as an installation of fuses are recommended because the extent of the above-mentioned damage and smoke emission will depend on the current capability of the power supply. 6. When designing your equipment, comply with the range of absolute maximum rating and the guaranteed operating conditions (operating power supply voltage and operating environment etc.). Especially, please be careful not to exceed the range of absolute maximum rating on the transient state, such as power-on, power-off and mode-switching. Otherwise, we will not be liable for any defect which may arise later in your equipment. Even when the products are used within the guaranteed values, take into the consideration of incidence of break down and failure mode, possible to occur to semiconductor products. Measures on the systems such as redundant design, arresting the spread of fire or preventing glitch are recommended in order to prevent physical injury, fire, social damages, for example, by using the products. 7. When using the LSI for new models, verify the safety including the long-term reliability for each product. 8. When the application system is designed by using this LSI, be sure to confirm notes in this book. Be sure to read the notes to descriptions and the usage notes in the book. 9. Take time to check the characteristics on use. When changing an external circuit constant for use, consider not only static characteristics, but also transient characteristics and external parts with respect to the characteristics difference among ICs so that you can get enough margin. Moreover, consider the influence of electric charge remaining in an external capacitor on rising/falling of power supply. SDB00179AEB 26 AN41908A Usage Notes (continued) y Notes of Power LSI 1. The protection circuit is for maintaining safety against abnormal operation. Therefore, the protection circuit should not work during normal operation. Especially for the thermal protection circuit, if the area of safe operation or the absolute maximum rating is momentarily exceeded due to output pin to VCC short (Power supply fault), or output pin to GND short (Ground fault), the LSI might be damaged before the thermal protection circuit could operate. 2. Unless specified in the product specifications, make sure that negative voltage or excessive voltage are not applied to the pins because the device might be damaged, which could happen due to negative voltage or excessive voltage generated during the ON and OFF timing when the inductive load of a motor coil or actuator coils of optical pick-up is being driven. 3. The product which has specified ASO (Area of Safe Operation) should be operated in ASO. 4. Verify the risks which might be caused by the malfunctions of external components. 5. Apply voltage from a low-impedance to power supply pins and connect a bypass capacitor to the LSI as near as possible. SDB00179AEB 27