AD5620ARJ-1500RL7 Fast Delivery |IC PHOENIX CO.,LIMITED

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AD5620ARJ-1500RL7
Single, 12-/14-/16-Bit nanoDAC with 5 ppm/C On-Chip Reference in SOT-23
Single, 12-/14-/16-Bit nanoDAC™ with
5 ppm/°C On-Chip Reference in SOT-23
FEATURES
Low power, single nanoDACs
AD5660: 16 bits
AD5640: 14 bits
AD5620: 12 bits
12-bit accuracy guaranteed
On-chip, 1.25 V/2.5 V, 5 ppm/°C reference
Tiny 8-lead SOT-23/MSOP packages
Power-down to 480 nA @ 5 V, 200 nA @ 3 V
3 V/5 V single power supply
Guaranteed 16-bit monotonic by design
Power-on reset to zero/midscale
3 power-down functions
Serial interface with Schmitt-triggered inputs
Rail-to-rail operation
SYNC interrupt facility
APPLICATIONS
Process control
Data acquisition systems
Portable battery-powered instruments
Digital gain and offset adjustment
Programmable voltage and current sources
Programmable attenuators
PRODUCT HIGHLIGHTS
1. 12-/14-/16-bit nanoDAC—12-bit accuracy guaranteed.
2. On-chip, 1.25 V/2.5 V, 5 ppm/°C reference.
3. Available in 8-lead SOT-23 and 8-lead MSOP packages.
4. Power-on reset to 0 V or midscale.
5. 10 μs settling time.
RELATED DEVICE
FUNCTIONAL BLOCK DIAGRAM
SYNCSCLKDIN
Figure 1.
GENERAL DESCRIPTION
The AD5620/AD5640/AD5660, members of the nanoDAC
family of devices, are low power, single, 12-/14-/16-bit, buffered
voltage-out DACs and are guaranteed monotonic by design.
The AD5620/AD5640/AD5660-1 parts include an internal,
1.25 V, 5 ppm/°C reference, giving a full-scale output voltage
range of 2.5 V. The AD5620/AD5640/AD5660-2-3 parts include
an internal, 2.5 V, 5 ppm/°C reference, giving a full-scale output
voltage range of 5 V. The reference associated with each part is
available at the VREFOUT pin.
The parts incorporate a power-on reset circuit to ensure that the
DAC output powers up to 0 V (AD5620/AD5640/AD5660-1-2)
or midscale (AD5620-3 and AD5660-3) and remains there until
a valid write takes place. The parts contain a power-down
feature that reduces the current consumption of the device to
480 nA at 5 V and provides software-selectable output loads
while in power-down mode. The power consumption is
2.5 mW at 5 V, reducing to 1 μW in power-down mode.
The AD5620/AD5640/AD5660 on-chip precision output
amplifier allows rail-to-rail output swing to be achieved. For
remote sensing applications, the output amplifier’s inverting
input is available to the user. The AD5620/AD5640/AD5660 use
a versatile 3-wire serial interface that operates at clock rates up
to 30 MHz and is compatible with standard SPI®, QSPI™,
MICROWIRE™, and DSP interface standards.
TABLE OF CONTENTS
Features..............................................................................................1
Applications.......................................................................................1
Product Highlights...........................................................................1
Related Device...................................................................................1
Functional Block Diagram..............................................................1
General Description.........................................................................1
Revision History...............................................................................2
Specifications.....................................................................................3
AD5620/AD5640/AD5660-2-3..................................................3
AD5620/AD5640/AD5660-1......................................................5
Timing Characteristics................................................................7
Absolute Maximum Ratings............................................................8
ESD Caution..................................................................................8
Pin Configurations and Function Descriptions...........................9
Typical Performance Characteristics...........................................10
Terminology....................................................................................16
Theory of Operation......................................................................17
D/A Section.................................................................................17
Resistor String.............................................................................17
Internal Reference......................................................................17
Output Amplifier........................................................................17
Serial Interface............................................................................17
Input Shift Register....................................................................18
SYNC Interrupt..........................................................................18
Power-On Reset..........................................................................19
Power-Down Modes..................................................................19
Microprocessor Interfacing.......................................................19
Applications.....................................................................................21
Using an REF19x as a Power Supply for the
AD5620/AD5640/AD5660.......................................................21
Bipolar Operation Using the AD5660.....................................21
Using the AD5660 as an Isolated, Programmable,
4 to 20 mA Process Controller.................................................21
Using the AD5620/AD5640/AD5660
with a Galvanically Isolated Interface......................................22
Power Supply Bypassing and Grounding................................22
Outline Dimensions.......................................................................23
AD5620 Ordering Guide...........................................................23
AD5640 Ordering Guide...........................................................24
AD5660 Ordering Guide...........................................................24
REVISION HISTORY
9/05—Rev. 0 to Rev. A
Changes to Specifications................................................................5
Changes to Outline Dimensions...................................................23
7/05—Revision 0: Initial Version
SPECIFICATIONS
AD5620/AD5640/AD5660-2-3
VDD = 4.5 V to 5.5 V, RL = 2 kΩ to GND, CL = 200 pF to GND, CREFOUT = 100 nF; all specifications TMIN to TMAX, unless otherwise noted.
Table 1.
1 Temperature range is −15°C to +105°C, typical at 25°C. Linearity calculated using a reduced code range: AD5660 (Code 511 to Code 65024); AD5640 (Code 128 to Code 16256); AD5620 (Code 32 to Code 4064). Output
unloaded. Linearity tested with VDD = 5.5 V. If part is operated with a VDD < 5 V, the output is clamped to VDD. Guaranteed by design and characterization; not production tested.
AD5620/AD5640/AD5660-1
VDD1 = 2.7 V to 3.3 V, RL = 2 kΩ to GND, CL = 200 pF to GND, CREFOUT = 100 nF; all specifications TMIN to TMAX, unless otherwise noted.
Table 2.
1 Part is functional with VDD up to 5.5 V. Temperature range is −15°C to +105°C, typical at +25°C.
3 Linearity calculated using a reduced code range: AD5660 (Code 511 to Code 65024); AD5640 (Code 128 to Code 16256); AD5620 (Code 32 to Code 4064). Output
unloaded.
4 Guaranteed by design and characterization; not production tested.
TIMING CHARACTERISTICS
All input signals are specified with tr = tf = 1 ns/V (10% to 90% of VDD) and timed from a voltage level of (VIL + VIH)/2. See Figure 2.
VDD = 2.7 V to 5.5 V; all specifications TMIN to TMAX, unless otherwise noted.
Table 3. Maximum SCLK frequency is 30 MHz at VDD = 3.6 V to 5.5 V and 20 MHz at VDD = 2.7 V to 3.6 V.
DIN
LSB = DB0
MSB = DB23 FOR AD5660;
MSB = DB15 FOR AD5620/AD5640
SYNC
SCLKt10
04539-002
Figure 2. Serial Write Operation
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
Table 4.
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
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 CONFIGURATIONS AND FUNCTION DESCRIPTIONS
SYNC
VDD
VREFOUT
VFB
VOUT
GND
DIN
SCLK
AD5620/
AD5640/
AD5660
TOP VIEW
(Not to Scale)
Figure 3. SOT-23 Pin Configuration
SYNC
VDD
VFB
VOUT
GND
DIN
SCLK
AD5620/AD5640/AD5660TOP VIEW(Not to Scale)
Figure 4. MSOP Pin Configuration
Table 5. Pin Function Descriptions
TYPICAL PERFORMANCE CHARACTERISTICS
CODE
INL E
RROR (LS
5000
Figure 5. INL—AD5660-2/AD5660-3
CODE
INL E
RROR (LS
8750750062505000375025001250
Figure 6. INL—AD5640-2/AD5640-3
CODE
INL E
RROR (LS
0.21000500200015003500300025004000
CODE
DNL E
RROR (LS
5000
Figure 8. DNL—AD5660-2/AD5660-3
CODE
DNL E
RROR (LS
8750750062505000375025001250
Figure 9. DNL—AD5640-2/AD5640-3
CODE
DNL E
RROR (LS
0.051000500200015003500300025004000
04539-010
CODE
INL E
ROR (LS
5000
Figure 11. INL—AD5660-1
CODE
INL E
RROR (LS
8750750062505000375025001250
04539-018
Figure 12. INL—AD5640-1
CODE
INL E
RROR (LS
–1.005001000150020002500300035004000
CODE
DNL E
RROR (LS
5000
Figure 14. DNL—AD5660-1
CODE
DNL E
RROR (LS
8750750062505000375025001250
–0.4
Figure 15. DNL—AD5640-1
CODE
DNL E
RROR (LS
–0.2005001000150020002500300035004000
–0.15
TEMPERATURE (°C)
RROR (LS
–15255456585105
Figure 17. INL Error and DNL Error vs. Temperature
TEMPERATURE (°C)
ROR (% FS
–15255456585105
Figure 18. Gain Error and Full-Scale Error vs. Temperature
TEMPERATURE (°C)
RROR (mV
–15255456585105
IDD (mA)
NUMBE
R OF DE
ICE
0.450.460.470.480.490.500.510.520.530.540.550.560.570.580.590.600.610.620.630.650.640.660.67
Figure 20. IDD Histogram
CURRENT (mA)
RROR V
LTAGE
(V
–10–8–6–4–20248610
Figure 21. Headroom at Rails vs. Source and Sink
CURRENT (mA)
OUT
(V
–30–20–100102030
Figure 22. Source and Sink Capability—AD5660-2/AD5660-3

Partno	Mfg	Dc	Qty	Available	Descript
AD5620ARJ-1500RL7 \|AD5620ARJ1500RL7	ADI	N/a	2	avai	Single, 12-/14-/16-Bit nanoDAC with 5 ppm/C On-Chip Reference in SOT-23