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WM2619 Datasheet(PDF) 1 Page - Wolfson Microelectronics plc |
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WM2619 Datasheet(HTML) 1 Page - Wolfson Microelectronics plc |
1 / 9 page WM2619 12-bit Parallel Input Voltage Output DAC Production Data, June 1999, Rev 1.0 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 . 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 ORDERING INFORMATION DEVICE TEMP. RANGE PACKAGE WM2619CDT 0° to 70°C 20-pin TSSOP WM2619IDT -40° to 85°C 20-pin TSSOP 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 1 µs. 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. BLOCK DIAGRAM TYPICAL PERFORMANCE data (13) OUT REFIN(12) POWER-ON RESET D[0-11] (19,20, 1-10) NWE (17) (14) GND VDD (11) POWERDOWN CONTROL REFERENCE INPUT BUFFER WM2619 X1 X2 DAC OUTPUT BUFFER NCS (18) 12-BIT DAC LATCH 12-BIT INPUT REGISTER (15) NPD (16) NLDAC VDD = 5V, V REF = 2.048V, Load = 10k/100pF -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 0 512 1024 1536 2048 2559 3071 3583 4095 DIGITAL CODE |
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