ad5310brt Analog Devices, Inc., ad5310brt Datasheet

ad5310brt

Manufacturer Part Number

ad5310brt

Description

+2.7 V To +5.5 V, 140 Ua, Rail-to-rail Voltage Output 10-bit Dac In A Sot-23

Manufacturer

Analog Devices, Inc.

Datasheet

1.AD5310BRT.pdf (12 pages)

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GENERAL DESCRIPTION

The AD5310 is a single, 10-bit buffered voltage out DAC that

operates from a single +2.7 V to +5.5 V supply consuming

115 A at 3 V. Its on-chip precision output amplifier allows rail-

to-rail output swing to be achieved. The AD5310 utilizes a ver-

satile three-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 reference for AD5310 is derived from the power supply

inputs and thus gives the widest dynamic output range. The part

incorporates a power-on-reset circuit that ensures that the DAC

output powers up to zero volts 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 to portable battery operated equipment.

The power consumption is 0.7 mW at 5 V reducing to 1 W 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 ver-

sion. The AD5300/AD5310/AD5320 are available in 6-lead

SOT-23 packages and 8-lead SOIC packages.

SPI and QSPI are trademarks of Motorola, Inc.

MICROWIRE is a trademark of National Semiconductor Corporation.

*Patent pending; protected by U.S. Patent No. 5684481.

REV. A

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

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

FEATURES

Single 10-Bit DAC

6-Lead SOT-23 and 8-Lead SOIC Packages

Micropower Operation: 140

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 Zero Volts

Three Power-Down Functions

Low Power Serial Interface with Schmitt-Triggered

On-Chip Output Buffer Amplifier, Rail-to-Rail

SYNC Interrupt Facility

APPLICATIONS

Portable Battery Powered Instruments

Digital Gain and Offset Adjustment

Programmable Voltage and Current Sources

Programmable Attenuators

Inputs

Operation

A @ 5 V

Voltage Output 10-Bit DAC in a SOT-23

+2.7 V to +5.5 V, 140 A, Rail-to-Rail

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

Fax: 781/326-8703

PRODUCT HIGHLIGHTS

1. Available in 6-lead SOT-23 and 8-lead SOIC packages.

2. Low power, single supply operation. This part operates from

3. The on-chip output buffer amplifier allows the output of the

4. Reference derived from the power supply.

5. High speed serial interface with clock speeds up to 30 MHz.

6. Power-down capability. When powered down, the DAC

SYNC

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.

DAC to swing rail-to-rail with a slew rate of 1 V/ s.

Designed for very low power consumption. The interface

only powers up during a write cycle.

typically consumes 50 nA at 3 V and 200 nA at 5 V.

CONTROL LOGIC

POWER-ON

INPUT

SCLK

RESET

DAC

FUNCTIONAL BLOCK DIAGRAM

DIN

REF (+) REF (–)

World Wide Web Site: http://www.analog.com

10-BIT

DAC

CONTROL LOGIC

POWER-DOWN

GND

AD5310*

AD5310

RESISTOR

NETWORK

OUT

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ad5310brt Summary of contents

Page 1

... Power-down capability. When powered down, the DAC typically consumes and 200 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 AD5310* GND AD5310 V OUT POWER-DOWN RESISTOR NETWORK © Analog Devices, Inc., 1999 ...

Page 2

AD5310–SPECIFICATIONS Parameter 2 STATIC PERFORMANCE Resolution Relative Accuracy Differential Nonlinearity Zero Code Error Full-Scale Error Gain Error Zero Code Error Drift Gain Temperature Coefficient 3 OUTPUT CHARACTERISTICS Output Voltage Range Output Voltage Settling Time Slew Rate Capacitive Load Stability Digital-to-Analog ...

Page 3

... Exposure to absolute maximum rating condi- Max– tions for extended periods may affect device reliability. Model AD5310BRT AD5310BRM *RT = SOT-23 SOIC. –3– AD5310 to T unless otherwise noted) MIN MAX ...

Page 4

AD5310 V OUT GND V DD SOT-23 Pin Numbers Pin No. Mnemonic Function 1 V Analog output voltage from DAC. The output amplifier has rail-to-rail operation. OUT 2 GND Ground reference point for all circuitry on the part ...

Page 5

TERMINOLOGY Relative Accuracy For the DAC, relative accuracy or Integral Nonlinearity (INL measure of the maximum deviation, in LSBs, from a straight line passing through the endpoints of the DAC transfer func- tion. A typical INL vs. code ...

Page 6

AD5310 –Typical Performance Characteristics + INL @ –1 INL @ 5V –2 –3 –4 0 200 400 600 800 1000 CODE Figure 2. Typical INL Plot +5V ...

Page 7

V = +5V DD 250 200 150 100 50 0 – 120 TEMPERATURE – C Figure 11. Supply Current vs. Temperature 800 600 400 200 ...

Page 8

AD5310 GENERAL DESCRIPTION D/A Section The AD5310 DAC is fabricated on a CMOS process. The architecture consists of a string DAC followed by an output buffer amplifier. Since there is no reference input pin, the power supply (V ) acts ...

Page 9

SYNC Interrupt In a normal write sequence, the SYNC line is kept low for at least 16 falling edges of SCLK and the DAC is updated on the 16th falling edge. However, if SYNC is brought high before the 16th ...

Page 10

AD5310 AD5310 to 68HC11/68L11 Interface Figure 26 shows a serial interface between the AD5310 and the 68HC11/68L11 microcontroller. SCK of the 68HC11/68L11 drives the SCLK of the AD5310, while the MOSI output drives the serial data line of the DAC. ...

Page 11

Bipolar Operation Using the AD5310 The AD5310 has been designed for single-supply operation but a bipolar output range is also possible using the circuit in Figure 30. The circuit below will give an output voltage range Rail-to-rail ...

Page 12

AD5310 0.071 (1.80) 0.059 (1.50) 0.051 (1.30) 0.035 (0.90) 0.006 (0.15) 0.002 (0.05) OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 6-Lead SOT-23 (RT-6) 0.122 (3.10) 0.106 (2.70 0.118 (3.00) 0.098 (2.50 PIN 1 ...

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