Tel: 886-2-66296288 Fax:886-2-29174598 URL:http://www.princeton.com.tw 102.3mA, Current Sinking, 10-bit, I2C DAC Preliminary PT5661 DESCRIPTION The PT5661 is a single 10-bit DAC with 102.3mA output current sink capability. It features an internal reference and operates from a single 2.3V to 5.5V supply. The DAC is controlled via a 2-wire (I2C-compatible) serial interface that operates at clock rates up to 400KHz. The PT5661 incorporates a power-on reset circuit, which ensures that the DAC output powers up to 0V and remains there until a valid write takes place. It has a power-down feature that reduces the current consumption of the device to 1μA maximum. The PT5661 is designed for autofocus, image stabilization, and optical zoom applications in camera phones, digital still cameras, and camcorders. The PT5661 also has many industrial applications, such as controlling temperature, light, and movement, over the range -40°C to +85°C without derating. The I2C address of the PT5661 is 0x18h. P P P P FEATURES • • • • • • • • • • • • • • 102.3mA current sink Available in DFN-8 package Available in 2 x 3 WCSP package 2-wire (I2C-compatible) serial interface 10-bit resolution Integrated current sense resistor 2.3V to 5.5V power supply Guaranteed monotonic over all codes Power-down to 0.5μA typical Internal reference Built-in UVLO shutdown circuit Built-in thermal shutdown circuit Power-down function Power-on reset P P PT5661 PRE1.0 -1- August, 2008 Tel: 886-2-66296288 Fax:886-2-29174598 URL:http://www.princeton.com.tw 102.3mA, Current Sinking, 10-bit, I2C DAC Preliminary PT5661 APPLICATIONS CONSUMER APPLICATIONS • • • • • • • • • • • • Lens autofocus/ Image stabilization/ Optical zoom Shutters Iris/exposure Neutral density (ND) filters Lens covers Camera phones Digital still cameras Camera modules Digital video cameras/camcorders Camera-enabled devices Security cameras Web/PC cameras INDUSTRIAL APPLICATIONS • • • • • • • • Heater control Fan control Cooler (Peltier) control Solenoid control Valve control Linear actuator control Light control Current loop control PT5661 PRE1.0 -2- August, 2008 Tel: 886-2-66296288 Fax:886-2-29174598 URL:http://www.princeton.com.tw 102.3mA, Current Sinking, 10-bit, I2C DAC Preliminary PT5661 BLOCK DIAGRAM PT5661 PRE1.0 -3- August, 2008 Tel: 886-2-66296288 Fax:886-2-29174598 URL:http://www.princeton.com.tw 102.3mA, Current Sinking, 10-bit, I2C DAC Preliminary PT5661 PIN CONFIGURATION DFN-8 WCSP-6 PT5661 PRE1.0 -4- August, 2008 Tel: 886-2-66296288 Fax:886-2-29174598 URL:http://www.princeton.com.tw 102.3mA, Current Sinking, 10-bit, I2C DAC Preliminary PT5661 PIN DESCRIPTION DFN-8 Pin Name Xshutdown NC SDA SCL AGND VDD PGND ISINK B B Description Power down, asynchronous power down signal No connection I2C interface signal I2C interface signal Analog/Digital ground pin Digital supply voltage Power ground pin Output current sink Pin No. 1 2 3 4 5 6 7 8 Description Output current sink Power down, asynchronous power down signal Ground pin (Power/Analog/Digital ground) I2C interface signal Power supply I2C interface signal Ball No. A1 A2 B1 B2 C1 C2 P P P P WCSP-6 Ball Name ISINK Xshutdown GND SDA VDD SCL B PT5661 PRE1.0 B P P P P -5- August, 2008