PTC PT5661

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.
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FEATURES
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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
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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
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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
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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
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WCSP-6
Ball Name
ISINK
Xshutdown
GND
SDA
VDD
SCL
B
PT5661 PRE1.0
B
P
P
P
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August, 2008