Data Sheet
FEATURES
2.7 V to 5.5 V, 140 µA, Rail-to-Rail
Voltage Output 10-Bit DAC in a SOT-23
AD5310
FUNCTIONAL BLOCK DIAGRAM
Single 10-bit DAC
6-lead SOT-23 and 8-lead
µSOIC
packages
Micropower operation: 140
µA
@ 5 V
Power-down to 200 nA @ 5 V, 50 nA @ 3 V
2.7 V to 5.5 V power supply
Guaranteed monotonic by design
Reference derived from power supply
Power-on reset to 0 V
Three power-down functions
Low power serial interface with Schmitt triggered inputs
On-chip output buffer amplifier, rail-to-rail operation
SYNC interrupt facility
Qualified for automotive applications
APPLICATIONS
Portable battery-powered instruments
Digital gain and offset adjustment
Programmable voltage and current sources
Programmable attenuators
Figure 1.
GENERAL DESCRIPTION
The
AD5310
1
is a single, 10-bit, buffered voltage output DAC
that operates from a single 2.7 V to 5.5 V supply, consuming
115 µA at 3 V. Its on-chip precision output amplifier allows
rail-to-rail output swing. The
AD5310
utilizes a versatile 3-wire
serial interface that operates at clock rates of up to 30 MHz and
is compatible with standard SPI™, QSPI™, MICROWIRE®, and
DSP interface standards.
The reference for
AD5310
is derived from the power supply inputs
and, therefore, provides the widest dynamic output range. The
part incorporates a power-on reset circuit that ensures that the
DAC output powers up to 0 V and remains there until a valid
write takes place to the device. The part contains a power-down
feature, which reduces the current consumption of the device to
200 nA at 5 V and provides software-selectable output loads while
in power-down mode. The part is put into power-down mode
over the serial interface.
The low power consumption of this part in normal operation
makes it ideally suited for portable, battery-operated equipment.
The power consumption is 0.7 mW at 5 V, reducing to 1 µW in
power-down mode.
The
AD5310
is one of a family of pin-compatible DACs. The
AD5300
is the 8-bit version, and the AD5320 is the 12-bit version.
The
AD5300/AD5310/AD5320
are available in 6-lead SOT-23
packages and 8-lead µSOIC packages.
PRODUCT HIGHLIGHTS
1.
2.
Available in 6-lead SOT-23 and 8-lead µSOIC packages.
Low power, single-supply operation. This part operates
from a single 2.7 V to 5.5 V supply and typically consumes
0.35 mW at 3 V and 0.7 mW at 5 V, making it ideal for
battery-powered applications.
The on-chip output buffer amplifier allows the output of
the DAC to swing rail-to-rail with a slew rate of 1 V/µs.
Reference derived from the power supply.
High speed serial interface with clock speeds of up to 30 MHz.
Designed for very low power consumption. The interface
only powers up during a write cycle.
Power-down capability. When powered down, the DAC
typically consumes 50 nA at 3 V and 200 nA at 5 V.
3.
4.
5.
6.
1
Patent pending; protected by U.S. Patent No. 5684481.
Rev. B
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2012 Analog Devices, Inc. All rights reserved.
AD5310
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 1
Product Highlights ........................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Timing Characteristics ................................................................ 4
Absolute Maximum Ratings ............................................................ 5
ESD Caution .................................................................................. 5
Pin Configurations and Function Descriptions ........................... 6
Typical Performance Characteristics ............................................. 7
Terminology .................................................................................... 10
Theory of Operation ...................................................................... 11
D/A Section ................................................................................. 11
Resistor String ............................................................................. 11
Data Sheet
Output Amplifier ........................................................................ 11
Serial Interface ............................................................................ 11
Input Shift Register .................................................................... 11
SYNC Interrupt .......................................................................... 12
Power-On Reset .......................................................................... 12
Power-Down Modes .................................................................. 12
Microprocessor Interfacing ....................................................... 12
Applications Information .............................................................. 14
Using REF19x as a Power Supply for AD5310 ....................... 14
Bipolar Operation Using the AD5310 ..................................... 14
Using AD5310 with an Opto-Isolated Interface .................... 14
Power Supply Bypassing and Grounding ................................ 15
Outline Dimensions ....................................................................... 16
Ordering Guide .......................................................................... 16
Automotive Products ................................................................. 16
REVISION HISTORY
7/12—Rev. A to Rev. B
Updated Format .................................................................. Universal
Changes to Features.......................................................................... 1
Change to Figure 9 Caption ............................................................ 7
Changes to AD5310 to ADSP-2101 Interface Section
and Figure 27............................................................................... 12
Updated Outline Dimensions ....................................................... 16
Changes to Ordering Guide .......................................................... 16
Added Automotive Products Section........................................... 16
5/99—Rev. 0 to Rev. A
Rev. B | Page 2 of 16
Data Sheet
SPECIFICATIONS
AD5310
V
DD
= 2.7 V to 5.5 V; temperature range = −40°C to +105°C R
L
= 2 kΩ to GND; C
L
= 500 pF to GND; all specifications T
MIN
to T
MAX
unless
otherwise noted
Table 1.
Parameter
STATIC PERFORMANCE
1
Resolution
Relative Accuracy
Differential Nonlinearity
Zero Code Error
Full-Scale Error
Gain Error
Zero Code Error Drift
Gain Temperature Coefficient
OUTPUT CHARACTERISTICS
2
Output Voltage Range
Output Voltage Settling Time
Slew Rate
Capacitive Load Stability
Digital-to-Analog Glitch Impulse
Digital Feedthrough
DC Output Impedance
Short-Circuit Current
Power-Up Time
LOGIC INPUTS
2
Input Current
V
INL
, Input Low Voltage
V
INL
, Input Low Voltage
V
INH
, Input High Voltage
V
INH
, Input High Voltage
Pin Capacitance
POWER REQUIREMENTS
V
DD
I
DD
(Normal Mode)
V
DD
= 4.5 V to 5.5 V
V
DD
= 2.7 V to 3.6 V
I
DD
(All Power-Down Modes)
V
DD
= 4.5 V to 5.5 V
V
DD
= 2.7 V to 3.6 V
Power Efficiency
I
OUT
/I
DD
1
2
Min
10
Typ
Max
Unit
Bits
LSB
LSB
mV
% of FSR
% of FSR
µV/°C
ppm of FSR/°C
V
µs
V/µs
pF
pF
nV-s
nV-s
Ω
mA
mA
µs
µs
µA
V
V
V
V
pF
V
µA
µA
µA
µA
%
Test Conditions/Comments
5
−0.15
−20
−5
0
6
1
470
1000
20
0.5
1
50
20
2.5
5
±4
±0.5
40
−1.25
±1.25
See Figure 5
Guaranteed monotonic by design (see Figure 6)
All 0s loaded to DAC register (see Figure 9)
All 1s loaded to DAC register (see Figure 9)
V
DD
8
¼ scale to ¾ scale change (100 hex to 300 hex)
R
L
= 2 kΩ; 0 pF < C
L
< 500 pF (see Figure 19)
R
L
= ∞
R
L
= 2 kΩ
1 LSB change around major carry (see Figure 22)
V
DD
= 5 V
V
DD
= 3 V
Coming out of power-down mode, V
DD
= 5 V
Coming out of power-down mode, V
DD
= 3 V
±1
0.8
0.6
2.4
2.1
3
2.7
140
115
0.2
0.05
93
5.5
250
200
1
1
V
DD
= 5 V
V
DD
= 3 V
V
DD
= 5 V
V
DD
= 3 V
DAC active and excluding load current
V
IH
= V
DD
and V
IL
= GND
V
IH
= V
DD
and V
IL
= GND
V
IH
= V
DD
and V
IL
= GND
V
IH
= V
DD
and V
IL
= GND
I
LOAD
= 2 mA, V
DD
= 5 V
Linearity calculated using a reduced code range of 12 to 1011. Output unloaded.
Guaranteed by design and characterization; not production tested.
Rev. B | Page 3 of 16
AD5310
TIMING CHARACTERISTICS
V
DD
= 2.7 V to 5.5 V; all specifications T
MIN
to T
MAX
unless otherwise noted
Table 2.
Parameter
1, 2
t
1 3
t
2
t
3
t
4
t
5
t
6
t
7
t
8
1
2
Data Sheet
V
DD
= 2.7 V to 3.6 V
50
13
22.5
0
5
4.5
0
50
Limit at T
MIN
, T
MAX
V
DD
= 3.6 V to 5.5 V
33
13
13
0
5
4.5
0
33
Unit
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns min
Test Conditions/Comments
SCLK cycle time
SCLK high time
SCLK low time
SYNC to SCLK rising edge setup time
Data setup time
Data hold time
SCLK falling edge to SYNC rising edge
Minimum SYNC high time
All input signals are specified with tr = tf = 5 ns (10% to 90% of V
DD
) and timed from a voltage level of (V
IL
+ V
IH
)/2.
See Figure 2.
3
Maximum SCLK frequency is 30 MHz at V
DD
= 3.6 V to 5.5 V and 20 MHz at V
DD
= 2.7 V to 3.6 V.
Figure 2. Serial Write Operation
Rev. B | Page 4 of 16
Data Sheet
ABSOLUTE MAXIMUM RATINGS
T
A
= 25°C unless otherwise noted
Table 3.
Parameter
V
DD
to GND
Digital Input Voltage to GND
V
OUT
to GND
Operating Temperature Range
Industrial (B Version)
Storage Temperature Range
Junction Temperature (T
J
Max)
SOT-23 Package
Power Dissipation
θ
JA
Thermal Impedance
Lead Temperature, Soldering
Vapor Phase (60 sec)
Infrared (15 sec)
µSOIC Package
Power Dissipation
θ
JA
Thermal Impedance
θ
JC
Thermal Impedance
Lead Temperature, Soldering
Vapor Phase (60 sec)
Infrared (15 sec)
Rating
−0.3 V to +7 V
−0.3 V to V
DD
+ 0.3 V
−0.3 V to V
DD
+ 0.3 V
−40°C to +105°C
−65°C to +150°C
+150°C
(T
J
max − T
A
)/θ
JA
240°C/W
215°C
220°C
(T
J
max − T
A
)/θ
JA
206°C/W
44°C/W
215°C
220°C
AD5310
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 indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
ESD CAUTION
Rev. B | Page 5 of 16
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