View 11-MD218A_4519726.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

11-MD218A
Version Issue Date File Name Total Page : A.001 : 2008-04-14 : SP-MD218A-A.001.doc : 17
130mA, 10Bit Current Sinking VCM Driver with I2C Interface
9 7 1 SILICON TOUCH TECHNOLOGY INC.
9-4F-3, Prosperity Rd I, Science-Based Industrial Park Hsinchu, Taiwan, R.O.C. Tel886-3-5727171 Fax886-3-5727390
SILICON TOUCH TECHNOLOGY INC.
11-MD218A
130mA, 10-Bit Current Sinking VCM Driver with I2C Interface
General Specifications
The 11-MD218A is a VCM driver IC with I2C interface control that is capable of programmable output current sinking. It has a built-in internal voltage reference and operates in a wide supply voltage range from 2.4V to 5.5V. The DAC is controlled by a 2-wire I2C serial interface which operates in I2C fast mode (400 kHz). The 11-MD218A is designed for applications like image stabilization, auto-focus, and optical zoom in camera phones, digital still cameras, and other portable module devices.
Features and Benefits
Programmable output current sinking I2C serial interface 10-BIT DAC resolution 2.4V - 5.5V power supply Low voltage control for digital pin PD, SDA, and SCL(i.e., VIH = 1.54V @ VDD = 2.8V) Power down operation Power on reset Constant current control Ultra small package: DFN10 (3*3*0.8 mm), WLCSP(0.99*1.87*0.5 mm)
SP-MD218A-A.001.doc
VersionA.001
Page1
SILICON TOUCH TECHNOLOGY INC.
Pin Assignment
Pin Assignment of DFN10 (3*3*0.8 mm)
Pin Descriptions
Pin NO. 1 2 3 4 5 6 7 8 9 10 1. Pin Name VDD PD NC VSS NC NC SDA SCL AGND SINK I2C Interface Data I2C Interface Data Analog GND Analog Output : Output Current Sink Ground Pin Description Power Supply Pin Digital Input: Power Down Mode (`H' Operation, `L' Power Down)
The I2C slave 7-bit address of 11-MD218A is 0001-1xx.
SP-MD218A-A.001.doc
VersionA.001
Page2
SILICON TOUCH TECHNOLOGY INC.
Pin Assignment of WLCSP (0.99*1.87*0.5mm)
TOP View
WL1
WL8
WL2
WL7
WL3
WL6
WL4
Pin NO. WL1 WL2 WL3 WL4 WL5 WL6 Wl7 WL8 Pin Name SINK AGND SCL SDA VSS VSS PD VDD
WL5
Description
Programmable Sink Current Current Sinking GND I2C Interface Data I2C Interface Data Ground Pin Ground Pin IC Power Down Pin(Logic `L': power down) IC Power Pin
Absolute Maximum Ratings
Unless otherwise noted, TA= 25 Characteristic Supply Voltage Input Voltage Maximum Sink Current Operating Temperature Range Storage Temperature Range Symbol VDD VIN ISINK TOPR TSTG Rating 5.5 VDD+0.4 150 -40 ~ 125 -65 ~ 150 Unit V V mA C C
SP-MD218A-A.001.doc
VersionA.001
Page3
SILICON TOUCH TECHNOLOGY INC.
Electrical Characteristic
Unless otherwise noted, TA= 25, VDD = 2.8 V and VCM = 28.5, 460uH. Item Power Supply Supply Voltage Supply Current ( IDD ) VDD IPD IDD PD = L (Power down mode) PD = H, I2C= logic H 2.4 2.8 5.5 0.5 0.1 V uA mA Sym. Condition Min. Limit Typ. Max. Unit
PD, SDA, SCL digital control pin Input Voltage H Input Voltage L Parameters DAC Resolution DNL INL Output Offset Current Current Slew Rate Output Constant Current Settling Time Voltage Drop IOS SR ts VDD = 2.8V, ISINK = 100mA PD = H, I2C= logic H 3 40 80 10 +/-0.8 +/-1 +/-1 +/-5 5 Bits LSB LSB uA mA/us us VIH VIL 0.55*VDD -0.4 VDD+0.4 0.2*VDD V V
V
V = VSINK - VAGND (@
ISINK = 80 mA)
-
0.32
0.35
V
SP-MD218A-A.001.doc
VersionA.001
Page4
SILICON TOUCH TECHNOLOGY INC.
Block Diagram
(DFN10)
PD
2
VDD
1
Power ON Reset
Voltage Reference
SCL
8
I2C Interface
SDA
7
10-Bit DAC
Output Driver
10
SINK
4
9
VSS
AGND
SP-MD218A-A.001.doc
VersionA.001
Page5
SILICON TOUCH TECHNOLOGY INC.
Terminology
Resolution The DAC resolution is defined by the number of distinct analog levels corresponding to the number of bits it uses. 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-MD218A-A.001.doc
VersionA.001
Page6
SILICON TOUCH TECHNOLOGY INC.
Data Format
11-MD218A Write Mode When in the write mode, data is written to the 11-MD218A and shifted step-by-step into the 16-bit input register. When all data has been loaded in and master signal receives a STOP condition, the loaded data in the input register is transferred to the DAC.
11-MD218A Read Mode When 11-MD218A is in the write mode, data is read back from IC to master in the same bit order.
SP-MD218A-A.001.doc
VersionA.001
Page7
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 SPD (Soft Power Down, 2nd standby mode): IC power down controlled by software. Regarding to all kinds of IC operation situations please refers to following table. PD H L SPD L H IC status Power down IC Active Soft power down
X denotes "Don't care/Unused".
SP-MD218A-A.001.doc
VersionA.001
Page8
SILICON TOUCH TECHNOLOGY INC.
Performance Characteristics
1. DNL Plot
Typical DNL Plot @VDD=2.8V, 25degree
2
1.5
1
0.5 DNL (LSB)
0
-0.5
-1
-1.5
-2
100
200
300
400
500 DIGITAL Code
600
700
800
900
1000
2. INL Plot
Typical INL Plot @VDD=2.8V, 25degree
2
1.5
1
0.5 INL (LSB)
0
-0.5
-1
-1.5
-2
100
200
300
400
500 DIGITAL Code
600
700
800
900
1000
SP-MD218A-A.001.doc
VersionA.001
Page9
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
100
Isink (mA)
80
60
40
20
Temp. = -40 Temp. = 25 Temp. = 85
100
200
300
400
500 DIGITAL Code
600
700
800
900
1000
SP-MD218A-A.001.doc
VersionA.001
Page10
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. = 85 150
Full Scale Programmable Current (mA)
140
130
120
110
100 -40
-20
0
20
40
60
80
Temp.
SP-MD218A-A.001.doc
VersionA.001
Page11
SILICON TOUCH TECHNOLOGY INC.
Application Circuit
CL= 0.1 F
VCM VDD 1F Rp Rp
1
10
0.1 F
IL
VDD SINK
11-MD218B
SDA
7
SCL
I2C Interface 10-BIT DAC
Output Driver
8
I2C MASTER DEVICE
I2C SLAVE DEVICE
PD
2
VSS
4
AGND
9
PD = H (IC work) PD = L (IC ShutDown)
Application Notes
The 11-MD218A is a constant current control IC for application in Auto-Focus. The supply voltage range VDD of 11-MD218A 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 "H" is from 0.55*VDD to VDD+0.4V and logic "L" is from -0.4V to 0.2*VDD. Therefore, the three digital pins are suitable controlled by 1.8V ISP. The PD pin is the power down pin of 11-MD218A. Logic low level (PD = H) is for IC operation. On the other hand, its logic high level (PD = L) puts the chip into power down mode for power saving. It is recommended to keep PD at high level (PD = L) before operation to reach the maximum efficiency of power saving, especially for applications in portable devices.
SP-MD218A-A.001.doc
VersionA.001
Page12
SILICON TOUCH TECHNOLOGY INC.
The I2C bus would not be well controlled by master if VDD of Driver IC is shutdown(i.e., not applying voltage on VDD pin) because of ESD diode turning on via P-diode of SDA/or SCL. To avoid the application issue, NOT to turn off VDD of driver IC during whole module operation. It could be controlled by PD pin via GPIO of ISP. The power consumption of Driver IC should be 1.4uW in the standby mode (PD = L). 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-MD218A-A.001.doc
VersionA.001
Page13
SILICON TOUCH TECHNOLOGY INC.
Package Specification (DFN-10)
SYMBOL A A1 A3 b D D1 E E1 L e e1 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 0.30 3.10 2.30 3.10 1.30 0.65
MIN. 28 0 7 114 83 114 86 18
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
SP-MD218A-A.001.doc
VersionA.001
Page14
SILICON TOUCH TECHNOLOGY INC.
Package Specifications (WLCSP)
Bottom View
E
D
A2
L2 e2
A1
SYMBOL A A1 A2 b D E e1 e2 L1 L2 MIN. 0.445 0.17 0.275 0.24 1.83 0.95
DIMENSION (mm) 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
0.160 0.220
A
L1
e1
b
0.210 0.270
SP-MD218A-A.001.doc
VersionA.001
Page15
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-MD218A-A.001.doc
VersionA.001
Page16

▲Up To Search▲

Price & Availability of 11-MD218A

	To Download 11-MD218A Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .