WM2619 查看數據表（PDF） - Wolfson Microelectronics plc

零件编号

产品描述 (功能)

生产厂家

WM2619

12-bit Parallel Input Voltage Output DAC

Wolfson Microelectronics plc 

WM2619

12-bit Parallel Input Voltage Output DAC

Production Data, June 1999, Rev 1.0

FEATURES

• 12-bit voltage output DAC

• Single supply 2.7V to 5.5V operation

• DNL ±0.4 LSB, INL ±1.5 LSB

• Settling time 1µs typical

• Low power consumption

- 8mW typical in slow mode - 5V supply

- 4.3mW typical in fast mode - 3V supply

• Power down mode

APPLICATIONS

• Battery powered test instruments

• Digital offset and gain adjustment

• Battery operated/remote industrial controls

• Machine and motion control devices

• Wireless telephone and communication systems

• Speech synthesis

• Arbitrary waveform generation

DESCRIPTION

The WM2619 is a 12-bit voltage output, resistor string, digital-to-

analogue converter. A hardware controlled power down mode is

provided that reduces power consumption to 50nW. In normal

operation the device dissipates 8mW at 5V or 4.3mW at 3V.

The device has been designed to interface efficiently to industry

standard microprocessors and DSPs.

Excellent performance is delivered with a typical DNL of 0.4 LSBs

and a settling time of 1µs. The output stage is buffered by a x2

gain near rail-to-rail amplifier, which features a Class A output

stage. The 12 data bits are double-buffered enabling the output to

be asynchronously updated under hardware control.

The device is available in a 20-pin TSSOP package. Commercial

temperature (0° to 70°C) and Industrial temperature (-40° to 85°C)

variants are supported.

ORDERING INFORMATION

DEVICE

WM2619CDT

WM2619IDT

TEMP. RANGE

0° to 70°C

-40° to 85°C

PACKAGE

20-pin TSSOP

20-pin TSSOP

BLOCK DIAGRAM

REFIN(12)

D[0-11]

(19,20, 1-10)

NWE (17)

NCS (18)

12-BIT

INPUT

REGISTER

data

REFERENCE

INPUT BUFFER

X1

12-BIT

DAC

LATCH

VDD

(11)

DAC

OUTPUT

BUFFER

X2

(13) OUT

POWER-ON

RESET

(14)

GND

(16)

NLDAC

POWERDOWN

CONTROL

(15)

NPD

WM2619

TYPICAL PERFORMANCE

1

VDD = 5V, VREF = 2.048V, Load = 10k/100pF

0.8

0.6

0.4

0.2

0

-0.2

-0.4

-0.6

-0.8

-1

0

512

1024

1536

2048

2559

DIGITAL CODE

3071

3583

4095

WOLFSON MICROELECTRONICS LTD

Lutton Court, Bernard Terrace, Edinburgh, EH8 9NX, UK

Tel: +44 (0) 131 667 9386

Fax: +44 (0) 131 667 5176

Email: sales@wolfson.co.uk

http://www.wolfson.co.uk

Production Data Datasheets contain final

specifications current on publication date.

Supply of products conforms to Wolfson

Microelectronics’ Terms and conditions.

Masterrev1.0a.doc June 17, 1999 10:52

©1999 Wolfson Microelectronics Ltd.

Share Link: