DAC8 AMSCO | Alldatasheet
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Revision A, 26.11.02 Page 1 of 3 Process CUE (0.6µ m) Key Features - Full 8-Bit Resolution and Linearity - Small Area 0.044 mm²; - Size x = 216 µm, y = 202 µm - Supply Voltage 5V ± 10% - Only Single Power Supply Required Symbol General Description This Macro Cell is an 8-Bit digital to analog converter. Functional Description The architecture is based on two resistor dividers. Because of its high output impedance, which is also code dependent, it must be used together with a low offset operational amplifier at the output (e.g. OP03B). VRN and VRP must be within the common mode range of Pinlist Pin Description Cap. RP Positive Reference Voltage RN Negative Reference Voltage DACOUT Analog Output b<7:0 Data Input b(0) = LSB Analog Standard Cell DAC8 – 8-Bit Digital to Analog Converter DATA SHEET
Revision A, 26.11.02 Page 2 of 3 POWER SUPPLIES The converter requires one power supply (vdda, gnd). TECHNICAL DATA FOR 5V SUPPLY (Tjunction = 0 to +85 ° C, VDDA = 5V ± 10%, unless otherwise specified) GENERAL PARAMETERS Symbol Parameter Conditions Min Typ Max Unit Resolution 8 Bit Vin Input Voltage Range VSS VDD V DNL Differential Nonlinearity VRP = 3.5V VRN = 1.5V VDD = 5V temp = 25 ° C ± 0.25 LSB INL Integral Nonlinearity VRP = 3.5V VRN = 1.5V VDD = 5V temp = 25 ° C ± 0.25 LSB Vos Input Offset Voltage VRP = 3.5V VRN = 1.5V VDD = 5V temp = 25 ° C ± 0.25 LSB Rref Reference Impedance 5.9 8 10.7 kOhms Vdd Power Supply Range 4.5 5.0 5.5 V Idd Power Supply Current 0.13 1) mA PVdd Power Consumption 0.13 1) mW Rout Output Resistance 21 2) kOhms 1) Vrefp – Vrefn = 1V 2) Middle of the resistor string; Code: 0111 0111 (output resistance is code-dependent) Idd includes the current through the resistor string TRANSIENT PARAMETERS Symbol Parameter Conditions Min Typ Max Unit Ts Settling Time 5V, 25 ° C Cload = 30pF <1 µ s Vout = (VRP – VRN) / 256 * code_in + VRN
Revision A, 26.11.02 Page 3 of 3 Contact austriamicrosystems AG A 8141 Schloss Premst ätten, Austria T. +43 (0) 3136 500 5333 F. +43 (0) 3136 525 5755 support@austriamicrosystems.com www.austriamicrosystems.com Copyright Copyright © 2002 austriamicrosystems. Trademarks registered ®. All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. To the best of its knowledge, austriamicrosystems asserts that the information contained in this publication is accurate and correct.