AD5328BRUZ Analog Devices Inc, AD5328BRUZ Datasheet

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AD5328BRUZ

Manufacturer Part Number
AD5328BRUZ
Description
IC DAC 12BIT 2.5V OCTAL 16-TSSOP
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD5328BRUZ

Data Interface
Serial
Settling Time
6µs
Number Of Bits
12
Number Of Converters
8
Voltage Supply Source
Single Supply
Power Dissipation (max)
4.5mW
Operating Temperature
-40°C ~ 105°C
Mounting Type
Surface Mount
Package / Case
16-TSSOP
Resolution (bits)
12bit
Sampling Rate
167kSPS
Input Channel Type
Serial
Supply Voltage Range - Analog
2.5V To 5.5V
Supply Current
1mA
Digital Ic Case Style
TSSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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FEATURES
AD5308: 8 buffered 8-bit DACs in 16-lead TSSOP
AD5318: 8 buffered 10-bit DACs in 16-lead TSSOP
AD5328: 8 buffered 12-bit DACs in 16-lead TSSOP
Low power operation: 0.7 mA @ 3 V
Guaranteed monotonic by design over all codes
Power-down to 120 nA @ 3 V, 400 nA @ 5 V
Double-buffered input logic
Buffered/unbuffered/V
Output range: 0 V to V
Power-on reset to 0 V
Programmability
Low power, SPI-®, QSPI-™, MICROWIRE-™, and DSP-
On-chip rail-to-rail output buffer amplifiers
Temperature range: −40°C to +125°C
Qualified for automotive applications
GENERAL DESCRIPTION
The AD5308/AD5318/AD5328 are octal 8-, 10-, and 12-bit
buffered voltage output DACs in a 16-lead TSSOP. They operate
from a single 2.5 V to 5.5 V supply, consuming 0.7 mA typical
at 3 V. Their on-chip output amplifiers allow the outputs to
swing rail-to-rail with a slew rate of 0.7 V/μs. The AD5308/
AD5318/AD5328 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.
The references for the eight DACs are derived from two
reference pins (one per DAC quad). These reference inputs can
be configured as buffered, unbuffered, or V
Rev. F
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.
A version: ±16 LSB INL, B version: ±12 LSB INL
Individual channel power-down
Simultaneous update of outputs (LDAC)
A version: ±1 LSB INL, B version: ±0.75 LSB INL
A version: ±4 LSB INL, B version: ±3 LSB INL
compatible 3-wire serial interface
REF
DD
or 0 V to 2 V
reference input options
REF
DD
inputs. The parts
8-/10-/12-Bit DACs in 16-Lead TSSOP
2.5 V to 5.5 V Octal Voltage Output
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
APPLICATIONS
Portable battery-powered instruments
Digital gain and offset adjustment
Programmable voltage and current sources
Optical networking
Automatic test equipment
Mobile communications
Programmable attenuators
Industrial process control
incorporate a power-on reset circuit, which ensures that the
DAC outputs power up to 0 V and remain there until a valid
write to the device takes place. The outputs of all DACs may be
updated simultaneously using the asynchronous LDAC input.
The parts contain a power-down feature that reduces the current
consumption of the devices to 400 nA at 5 V (120 nA at 3 V).
The eight channels of the DAC may be powered down individually.
All three parts are offered in the same pinout, which allows
users to select the resolution appropriate for their application
without redesigning their circuit board.
AD5308/AD5318/AD5328
©2002–2011 Analog Devices, Inc. All rights reserved.
www.analog.com

Related parts for AD5328BRUZ

AD5328BRUZ Summary of contents

Page 1

FEATURES AD5308: 8 buffered 8-bit DACs in 16-lead TSSOP A version: ±1 LSB INL, B version: ±0.75 LSB INL AD5318: 8 buffered 10-bit DACs in 16-lead TSSOP A version: ±4 LSB INL, B version: ±3 LSB INL AD5328: 8 buffered ...

Page 2

AD5308/AD5318/AD5328 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Functional Block Diagram .............................................................. 3 Specifications..................................................................................... 4 Absolute Maximum Ratings............................................................ 7 ESD Caution.................................................................................. 7 Pin Configuration and Function Descriptions............................. 8 Typical Performance Characteristics ...

Page 3

FUNCTIONAL BLOCK DIAGRAM LDAC SCLK INTERFACE SYNC LOGIC DIN LDAC V ABCD V REF STRING INPUT DAC BUFFER BUFFER BUFFER DAC A REGISTER REGISTER STRING DAC STRING INPUT BUFFER BUFFER REGISTER DAC B REGISTER DAC INPUT STRING ...

Page 4

AD5308/AD5318/AD5328 SPECIFICATIONS kΩ to GND REF L Table 1. 2 Parameter Min DC PERFORMANCE 3, 4 AD5308 Resolution 8 Relative Accuracy Differential Nonlinearity AD5318 ...

Page 5

Parameter Min Short Circuit Current Power-Up Time 6 LOGIC INPUTS Input Current V , Input Low Voltage Input High Voltage 1.7 IH Pin Capacitance POWER REQUIREMENTS V 2 (Normal Mode ...

Page 6

AD5308/AD5318/AD5328 Table 3. Timing Characteristics A, B Version Parameter Limit MIN MAX 4 ...

Page 7

ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise specified. A Table 4. Parameter Rating V to GND −0 Digital Input Voltage to GND −0 Reference Input Voltage to GND −0 ...

Page 8

AD5308/AD5318/AD5328 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 5. Pin Function Descriptions Pin No. Mnemonic Description 1 LDAC This active low control input transfers the contents of the input registers to their respective DAC registers. Pulsing this pin low allows any ...

Page 9

TYPICAL PERFORMANCE CHARACTERISTICS 1 25° 0.5 0 –0.5 –1 100 150 CODE Figure 4. AD5308 Typical INL Plot 25° –1 ...

Page 10

AD5308/AD5318/AD5328 0. ° MAX INL 0.25 0 MIN DNL –0.25 MIN INL –0. (V) REF Figure 10. AD5308 INL and DNL Error vs ...

Page 11

T = 25° 2V, GAIN = +1, REF 1.2 BUFFERED 1 REF DD 1.0 0.9 0 2V, GAIN = +1, UNBUFFERED REF GAIN = +1, UNBUFFERED 0.7 ...

Page 12

AD5308/AD5318/AD5328 300 MEAN: 0.693798 MEAN: 1.02055 0.6 0.7 0.8 0.9 I (mA) DD Figure 22. I Histogram with ...

Page 13

TERMINOLOGY Relative Accuracy For the DAC, relative accuracy or integral nonlinearity (INL measure of the maximum deviation, in LSB, from a straight line passing through the endpoints of the DAC transfer func- tion. Typical INL vs. code plots ...

Page 14

AD5308/AD5318/AD5328 OUTPUT VOLTAGE NEGATIVE OFFSET DAC CODE ERROR LOWER DEADBAND CODES AMPLIFIER FOOTROOM NEGATIVE OFFSET ERROR Figure 27. Transfer Function with Negative Offset (V GAIN ERROR PLUS OFFSET ERROR OUTPUT VOLTAGE POSITIVE OFFSET ACTUAL ERROR IDEAL = V ) REF ...

Page 15

THEORY OF OPERATION The AD5308/AD5318/AD5328 are octal resistor-string DACs fabricated on a CMOS process with resolutions of 8, 10, and 12 bits, respectively. Each contains eight output buffer ampli- fiers and is written to via a 3-wire serial interface. They ...

Page 16

AD5308/AD5318/AD5328 POWER-ON RESET The AD5308/AD5318/AD5328 are provided with a power-on reset function so that they power defined state. The power-on state is • Normal operation • Reference inputs unbuffered • output range REF ...

Page 17

Control Functions In the case of a control function, the MSB (Bit 15 This is followed by two control bits, which determine the mode. There are four different control modes: reference and gain mode, LDAC mode, power-down ...

Page 18

AD5308/AD5318/AD5328 Power-Down Mode The individual channels of the AD5308/AD5318/AD5328 can be powered down separately. The control mode for this is (10). On completion of this write sequence, the channels that have been set to 1 are powered down. Reset Mode ...

Page 19

MICROPROCESSOR INTERFACE ADSP-2101/ADSP-2103-to- AD5308/AD5318/AD5328 INTERFACE Figure 36 shows a serial interface between the AD5308/AD5318/ AD5328 and the ADSP-2101/ADSP-2103. The ADSP-2101/ ADSP-2103 should be set up to operate in the SPORT transmit alternate framing mode. The ADSP-2101/ADSP-2103 SPORT is programmed through ...

Page 20

AD5308/AD5318/AD5328 MICROWIRE-to-AD5308/AD5318/AD5328 INTERFACE Figure 39 shows an interface between the AD5308/AD5318/ AD5328 and any MICROWIRE-compatible device. Serial data is shifted out on the falling edge of the serial clock, SK, and is clocked into the AD5308/AD5318/AD5328 on the rising edge ...

Page 21

APPLICATIONS INFORMATION TYPICAL APPLICATION CIRCUIT The AD5308/AD5318/AD5328 can be used with a wide range of reference voltages where the devices offer full, one-quadrant multiplying capability over a reference range of 0. More typically, these devices are used ...

Page 22

AD5308/AD5318/AD5328 5V REGULATOR POWER V DD 10kΩ SCLK SCLK AD5308/AD5318 10kΩ SYNC SYNC V DD 10kΩ DIN DIN Figure 42. AD5308/AD5318/AD5328 in an Opto-Isolated Interface DECODING MULTIPLE AD5308/AD5318/AD5328s The SYNC pin on the AD5308/AD5318/AD5328 can be used in ...

Page 23

Table 10. Overview of AD53xx Serial Devices Part No. Resolution DNL SINGLES AD5300 8 ±0.25 AD5310 10 ±0.50 AD5320 12 ±1.00 AD5301 8 ±0.25 AD5311 10 ±0.50 AD5321 12 ±1.00 DUALS AD5302 8 ±0.25 AD5312 10 ±0.50 AD5322 12 ±1.00 ...

Page 24

... AD5328BRU-REEL −40°C to +125°C AD5328BRU-REEL7 −40°C to +125°C AD5328BRUZ −40°C to +125°C AD5328BRUZ-REEL −40°C to +125°C AD5328BRUZ-REEL7 −40°C to +125°C AD5308WARUZ-REEL7 −40°C to +125° RoHS Compliant Part Qualified for Automotive Applications. 5.10 5 ...

Page 25

AUTOMOTIVE PRODUCTS The AD5308WARUZ-REEL7 model is available with controlled manufacturing to support the quality and reliability requirement s of automotive applications. Note that this automotive model may have specifications that differ from the commercial models; therefore, designers should review the ...

Page 26

AD5308/AD5318/AD5328 NOTES Rev Page ...

Page 27

NOTES AD5308/AD5318/AD5328 Rev Page ...

Page 28

AD5308/AD5318/AD5328 NOTES ©2002–2011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D02812-0-4/11(F) Rev Page ...

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