AD5398BCPZ-REEL7 Fast Delivery |IC PHOENIX CO.,LIMITED

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AD5398BCPZ-REEL7
120 mA, Current Sinking, 10-Bit, I2C D/A Converter
120 mA, Current Sinking, 10-Bit, I2C DACRev. 0
FEATURES
120 mA current sink
Available in 8-lead LFCSP package
2-wire (I2C®-compatible) serial interface
10-bit resolution
Integrated current sense resistor
2.7 V to 5.5 V power supply
Guaranteed monotonic over all codes
Power-down to 0.5 µA typical
Internal reference
Ultralow noise preamplifier
Power-down function
Power-on reset
CONSUMER/COMMUNICATIONS APPLICATIONS
Lens autofocus
Image stabilization
Optical zoom
Shutters
Iris/exposure
Neutral density filter NDFs
Lens covers
Camera phones
Digital still cameras
Camera modules
Digital video cameras (DVCs)/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
FUNCTIONAL BLOCK DIAGRAM
05034-001SDA
AGND
DGND
VDDSCLPDISINK
DGND
Figure 1.
GENERAL DESCRIPTION
The AD5398 is a single 10-bit DAC with 120 mA output
current sink capability. It features an internal reference, and
operates from a single 2.7 V to 5.5 V supply. The DAC is
controlled via a 2-wire (I2C-compatible) serial interface that
operates at clock rates up to 400 kHz.
The AD5398 incorporates a power-on reset circuit, which
ensures that the DAC output powers up to 0 V and remains
there until a valid write takes place. It has a power-down
feature that reduces the current consumption of the device to
1 µA max.
The AD5398 is designed for autofocus, image stabilization,
and optical zoom applications in camera phones, digital still
cameras, and camcorders.
The AD5398 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 range for the AD5398 is 0x18 to 0x1F
inclusive.
TABLE OF CONTENTS
Specifications.....................................................................................3
AC Characteristics............................................................................4
Timing Characteristics.....................................................................4
Absolute Maximum Ratings............................................................5
ESD Caution..................................................................................5
Pin Configuration and Function Descriptions.............................6
Typical Performance Characteristics.............................................7
Terminology......................................................................................9
Theory of Operation......................................................................10
Serial Interface............................................................................10 2C Bus Operation......................................................................10
Data Format................................................................................10
Power Supply Bypassing and Grounding................................11
Applications.....................................................................................13
Outline Dimensions.......................................................................14
Ordering Guide..........................................................................14
REVISION HISTORY
12/04—Revision 0: Initial Version
SPECIFICATIONS
VDD = 2.7 V to 5.5 V, AGND = DGND = 0 V, load resistance RL = 25 Ω connected to VDD; all specifications TMIN to TMAX,
unless otherwise noted.
Table 1.

1 Temperature range is as follows: B Version: –40°C to +85°C. See the Terminology section.
3 Linearity is tested using a reduced code range: Codes 32 to 1023. To achieve near zero output current, use the power-down feature.
5 Guaranteed by design and characterization; not production tested. Input filtering on both the SCL and SDA inputs suppresses noise spikes that are less than 50 ns.
AC CHARACTERISTICS
VDD = 2.7 V to 5.5 V, AGND = DGND = 0 V, load resistance RL = 25 Ω connected to VDD, unless otherwise noted.
Table 2.
Temperature range is as follows: B Version: –40°C to +85°C.
2 Guaranteed by design and characterization; not production tested. See the section. Terminology
TIMING CHARACTERISTICS
VDD = 2.7 V to 5.5 V. All specifications TMIN to TMAX, unless otherwise noted.
Table 3.
Guaranteed by design and characterization; not production tested.
2 A master device must provide a hold time of at least 300 ns for the SDA signal (referred to the VIH MIN of the SCL signal) in order to bridge the undefined region of SCL’s
falling edge. Cb is the total capacitance of one bus line in pF. tR and tF are measured between 0.3 VDD and 0.7 VDD.
SDA
SCLt1
STARTREPEATED
STOP
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.1
Table 4.

1 Transient currents of up to 100 mA do not cause SCR latch-up.
2 To achieve the optimum θJA, it is recommended that the AD5398 is soldered on a
4-layer board. The AD5398 comes in an 8-lead LFCSP package with an exposed
paddle that should be connected to the same potential as the AD5398 DGND pin.
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those listed in the operational sections
of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability. Only one absolute maximum rating may be
applied at any one time.
ESD CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on
the human body and test equipment and can discharge without detection. Although this product features
proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy
electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance
degradation or loss of functionality.
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
DGND
SDA
SCL
ISINK
AGND
VDD
DGND
Figure 3. 8-Lead LFCSP
Table 5.
TYPICAL PERFORMANCE CHARACTERISTICS
952896840784728672616560504448392336280224168112
CODE
INL (
SB)
Figure 4. Typical INL Plot
0.5
CODE
DNL (LS
Figure 5. Typical DNL Plot
300.0–6333.1–6250.0–6200.0–6150.0–6100.0–653.5–6
TIME
OUTP
UT CURRE
NT (mA)
Figure 6. ¼ to ¾ Scale Settling Time (VDD = 3.6 V)
Figure 7. Settling Time for a 4-LSB Step (VDD = 3.6 V)
Figure 8. 0.1 Hz to 10 Hz Noise Plot (VDD = 3.6 V)
0.02
CODE
OUT
(A)
Figure 9. Sink Current vs. Code vs. Temperature (VDD = 3.6 V)
200101001k100k10k
FREQUENCY
A/V
Figure 10. AC Power Supply Rejection (VDD = 3.6 V)
–0.5–40–30–20–10015253545556575–1.0
TEMPERATURE (°C)
INL (
SB)
Figure 11. INL vs. Temperature vs. Supply
0.8
TEMPERATURE (°C)
DNL (LS
Figure 12. DNL vs. Temperature vs. Supply
0.10–40–30–20–100152535455565750
TEMPERATURE (°C)
RO CODE
RROR (mA)
Figure 13. Zero Code Error vs. Supply Voltage vs. Temperature
–1.5–40–30–20–10015253545556575–2.0
TEMPERATURE (°C)
RROR (mA)
Figure 14. Full-Scale Error vs. Temperature vs. Supply

Partno	Mfg	Dc	Qty	Available	Descript
AD5398BCPZ-REEL7 \|AD5398BCPZREEL7	AD	N/a	1965	avai	120 mA, Current Sinking, 10-Bit, I2C D/A Converter