11-VM148 Version Issue Date File Name Total Page : A.001 : 2009-05-19 : SP-VM148-A.001.doc : 17 130mA, 10Bit Current Sinking VCM Driver with I2C Interface 新竹市展業一路 9 號 7 樓之 1 SILICON TOUCH TECHNOLOGY INC. 9-7F-1, Prosperity Rd I, Science-Based Industrial Park Hsin-Chu, Taiwan 300, R.O.C. Tel：886-3-5645656 Fax：886-3-5645626 點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 11-VM148 130mA, 10-Bit Current Sinking VCM Driver with I2C Interface General Specifications The 11-VM148 is a VCM(Voice Coil Motor) driver IC with I2C interface control that is capable of programmable sinking output current. It has a built-in internal voltage reference and operates with a supply voltage range from 2.4V to 5.5V. The DAC is controlled by a signal transmit through a 2-wire I2C serial interface which operates in an I2C fast mode (400 kHz). The 11-VM148 is designed for applications such as image stabilization, auto-focus, optical zoom in camera phones, and other portable module devices. Features and Benefits z Programmable sinking output current z I2C serial interface z DAC with 10-BIT resolution z 2.4V – 5.5V power source z Low voltage control for digital pin PD, SDA, and SCL(i.e., VIH = 1.54V @ VDD = 2.8V) z Power off operation z Automatic power on reset z Small package: DFN10 (3*3*0.8 mm), WLCSP(0.99*1.87*0.5 mm) Ordering Information Part Number Package Marking 11-VM148 WLCSP WLCSP, 8Pin GXX* or HXX* DFN, 10Pin XXXX**G 11-VM148 DFN *XX reserved for a data code **XXXX reserved for a date code SP-VM148 Version：001 Page：1 點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. Terminology Resolution The DAC resolution is defined by the power factor of 2, which defines the number of distinct analog levels. N-bit resolution -> 2N distinct analog levels Differential Nonlinearity (DNL) error The variation in analog step sizes away from 1 LSB by any two adjacent codes. Usually, gain and offset errors have been removed. Integral Nonlinearity (INL) It is the deviation of actual transfer response from a straight line. Usually, INL error is referred to as the maximum INL error. SP-VM148 Version：001 Page：2 點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. Pin Assignment Pin Assignment of DFN10 (3*3*0.8 mm) Pin Descriptions Pin NO. Pin Name 1 VDD 2 PD Description Input Power Pin Digital Input: Power off Mode (When PD=High ,chip disable) ( When PD=Low ,chip enable) 1. 3 NC 4 VSS 5 NC 6 NC 7 SDA I2C Interface Data(Serial Data Line) 8 SCL I2C Interface Data(Serial Clock Line) 9 MVSS Input Motor driver GND Pin 10 SINK Analog Output : Output current Sink Pin Input Ground Pin The 7 address bits of 11-VM148 for I2C slave true port is 0001-1xx. SP-VM148 Version：001 Page：3 點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. Pin Assignment of WLCSP (0.99*1.87*0.5mm) TOP View Pin Number Pin Name Description 1 SINK 2 MVSS 3 SCL I2C Interface Data(Serial Clock Line) 4 SDA I2C Interface Data(Serial Data Line) 5 VSS Input Ground Pin 6 VSS Input Ground Pin 7 PD Digital Input: Power off Mode Analog Output : Output Current Sink Pin Input Motor Driver GND Pin (When PD=High ,chip disable) ( When PD=Low ,chip enable) 8 VDD Input Power Pin Absolute Maximum Ratings Unless otherwise noted, TA= 25℃ Characteristic Symbol Rating Unit Supply Input Voltage VDD 5.5 V Input Voltage VIN VDD+0.4 V Maximum Sink Current ISINK 150 mA Operating Temperature Range TOPR -40 ~ 125 °C Storage Temperature Range TSTG -65 ~ 150 °C SP-VM148 Version：001 Page：4 點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. Electrical Characteristic Unless otherwise noted, TA= 25℃, VDD = 2.8 V and VCM ≈ 18Ω, 460uH. Item Sym. Condition Limit Unit Min. Typ. Max. 2.4 2.8 5 V Power Supply Supply Voltage Supply Current ( IDD ) VDD IPD PD = High (chip disable) - - 0.5 uA IDD PD = Low, SPD= High - - 0.1 mA IDD1 PD = Low, SPD= Low 0.5 mA PD, SDA, SCL digital control pin Input Voltage High VIH - 0.55*VDD - VDD+0.4 V Input Voltage Low VIL - -0.4 - 0.2*VDD V Parameters DAC Resolution 10 DNL +/-0.8 +/-1 LSB INL +/-1 +/-5 LSB 5 uA Output Offset Current IOS PD = L, SPD= logic H Current Slew Rate SR SR = ΔI / Δt (*1) Output Constant Current Settling Time ts Voltage Drop ΔV 3 VDD = 2.8V, ISINK = 100mA ΔV = VSINK − VMVSS (*2) Bits - mA/us 40 80 us 0.32 0.35 V (@ISINK = 80 mA) Note: (*1) SR = ΔI / Δt , ISINK is the current of sink pin (*2): VSINK is the voltage of sink pin and VMVSS is the voltage of motor driver GND pin SP-VM148 Version：001 Page：5 點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. Block Diagram (DFN10) SP-VM148 Version：001 Page：6 點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. Data Format 11-VM148 Write Mode When in the write mode, data is written to the 11-VM148 and shifted byte-by-byte into a 16-bit input register. After all 16 bits of data have been shifted in, a STOP condition is transmit by master and the loaded data in the input register is transferred to the DAC. 11-VM148 Read Mode When 11-VM148 is in the read mode, data is read from IC to a master controller in the same bit order. SP-VM148 Version：001 Page：7 點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. Table MSB LSB 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 Serial Data Bits 7 Input Register R15 R14 R13 R12 R11 R10 R09 R08 R07 R06 R05 R04 R03 R02 R01 R00 SPD X D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 X X X X Function z SPD (Soft Power off, 2nd standby mode): IC power off controlled by software. z X denotes “Don’t care/Unused”. z Regarding to all kinds of IC operation situations please refers to following table. PD SPD IC status High - Power off Low IC Active High Soft power off Low The PD pin is the power off pin of 11-VM148. Logic low level (PD = Low) is for IC operation. On the other hand, its logic high level (PD = High) puts the chip into power off mode for power saving. It is recommended to keep PD at high level (PD = H) before while the chip is no operation to save power, especially for applications in portable devices. SP-VM148 Version：001 Page：8 點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. Performance Characteristics 1. DNL Plot Typical DNL Plot @VDD=2.8V, 25degree 2 1.5 1 DNL (LSB) 0.5 0 -0.5 -1 -1.5 -2 100 200 300 400 500 600 700 800 900 1000 800 900 1000 DIGITAL Code 2. INL Plot Typical INL Plot @VDD=2.8V, 25degree 2 1.5 1 INL (LSB) 0.5 0 -0.5 -1 -1.5 -2 100 200 300 400 500 600 700 DIGITAL Code SP-VM148 Version：001 Page：9 點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 3. Settling Time (VDD = 2.8V, VCM = 27Ohm with 430uH@500Hz, 550uH@1kHz, respectively, CL = 0.1uF @Temp. = 25) 4. Sink Current vs. Codes vs. Temp. Isink vs. Codes vs. Temp. 140 120 Isink (mA) 100 80 60 40 Temp. = -40 20 Temp. = 25 Temp. = 85 100 200 300 400 500 600 700 800 900 1000 DIGITAL Code SP-VM148 Version：001 Page：10 點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. 5. Full-Scale Programmable Current vs. Temp. vs. VDD Full-Scale Current vs. VDD vs. Temp. 160 Temp. = -40 Temp. = 25 Temp. = 85 Full Scale Programmable Current (mA) 150 140 130 120 110 100 -40 -20 0 20 40 60 80 Temp. SP-VM148 Version：001 Page：11 點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. Application Circuit SP-VM148 Version：001 Page：12 點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. Application Notes z The 11-VM148 is a constant current driving IC for applications in Auto-Focus. The supply voltage range VDD of 11-VM148 is from 2.4V to 5.5V. The input range of digital control pin PD, and digital I/O pins SCL and SDA, are defined such that logic “High” is from 0.55*VDD to VDD+0.4V and logic “Low” is from –0.4V to 0.2*VDD. Therefore, the three digital pins are suitable controlled by 1.8V ISP. z The PD pin is the power off pin of 11-VM148. Logic low level (PD = Low) is for IC operation. On the other hand, its logic high level (PD = High) puts the chip into power off mode for power saving. It is recommended to keep PD at high level (PD = H) before while the chip is no operation to save power, especially for applications in portable devices. z In order to ensure the stability of output current, a compensation capacitance CL is suggested placing across the two terminals of VCM. The suggested value of CL is about 0.1~0.22uF and could be fine tuned for different VCM. SP-VM148 Version：001 Page：13 點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. Package Specification (DFN-10) SYMBOL A A1 A3 b D D1 E E1 L e e1 SP-VM148 MIN. 0.70 0.00 0.18 2.90 2.10 2.90 1.10 0.45 DIMENSION (mm) NOM. 0.75 0.02 0.203 REF 0.25 3.00 2.20 3.00 1.20 0.55 0.50 BASIC 2.00 BASIC MAX. 0.80 0.05 MIN. 28 0 0.30 3.10 2.30 3.10 1.30 0.65 7 114 83 114 86 18 Version：001 DIMENSION (mil) NOM. 30 0.8 8 REF 10 118 87 118 87 22 20 BASIC 80 BASIC MAX. 32 2 12 122 91 122 91 26 Page：14 點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. Package Specifications (WLCSP) Bottom View E A A1 A2 L1 D e1 b L2 e2 DIMENSION (mm) SYMBOL A A1 A2 b D E e1 e2 L1 L2 SP-VM148 MIN. 0.445 0.17 0.275 0.24 1.83 0.95 0.160 0.220 Version：001 NOM. 0.5 0.20 0.30 0.26 1.87 0.99 0.50 0.50 0.185 0.245 MAX. 0.555 0.23 0.325 0.28 1.91 1.03 0.210 0.270 Page：15 點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. The products listed herein are designed for ordinary electronic applications, such as electrical appliances, audio-visual equipment, communications devices and so on. Hence, it is advisable that the devices should not be used in medical instruments, surgical implants, aerospace machinery, nuclear power control systems, disaster/crime-prevention equipment and the like. Misusing those products may directly or indirectly endanger human life, or cause injury and property loss. Silicon Touch Technology, Inc. will not take any responsibilities regarding the misusage of the products mentioned above. Anyone who purchases any products described herein with the above-mentioned intention or with such misused applications should accept full responsibility and indemnify. Silicon Touch Technology, Inc. and its distributors and all their officers and employees shall defend jointly and severally against any and all claims and litigation and all damages, cost and expenses associated with such intention and manipulation. SP-VM148 Version：001 Page：16