DESCRIPTIONThe ADC-318 and ADC-318A are 8 bit monolithic bipolar, full ash A/D converters. Though they have high, 120MHz (ADC-318) and 140MHz (ADC-318A), sampling rates, their input logic level, including the start convert pulse, is TTL, ECL and PECL compatible. Digital outputs are also TTL 1:2 de-multiplexed output. The ADC-318 and ADC-318A feature 1/2 LSB max. integral and differential non-linearity, +5V single or 5V dual power supply operation, a low 960mW maximum power dissipation, 150MHz wide analog input range and excellent temperature coef cient in a small 48 pin QFP package. The start convert pulse can have a 50% duty cycle. The ADC-318 and ADC-318A offer low cost, easy to use functionality for design engineers.ADC-318, ADC-318A8-Bit, 120MHz and 140MHz Full-Flash A/D ConverterMDA_ADC-318.B01Page 1 of 8For full details go towww.murata-ps.com/rohswww.murata-ps.comTechnical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000 ADC-3183.2 ns ADC-318A3.0 nsA/D Clock Pulse Width FEATURES Low power dissipation (960mW max.) TTL compatible output Diff./Integral nonlinearity ( LSB max.) 1:2 Demultiplexed straight output programmable 2:1 Frequency divided TTL clock output with reset Surface mount package Selectable Input Logic (TTl, ECL, PECL) +5V or 5V Power Supply OperationFigure 1. ADC-318/318A Functional Block Diagram 1-DVs (Digital)48RSET ECL/PECL 2REF. BOTTOM (VRB)47RSET ECL/PECL 3ANALOG GROUND46RSET TTL 4REF. MID POINT (VRM1)45SELECT 5+AVS (Analog)44INV 6ANALOG IN (VIN)43TTL CLOCK OUT 7REF. MID POINT (VRM2)42 +DVS2 (Digital) 8+AVS (Analog)41DIGITAL GROUND 2 9REF. MID POINT (VRM3)40A BIT 1 (MSB) 10ANALOG GROUND39A BIT 2 11RT)38A BIT 3 12DIGITAL GROUND 337A BIT 4 13A/D CLOCK ECL/PECL36A BIT 5 14A/D CLOCK ECL/PECL35A BIT 6 15A/D CLOCK TTL34A BIT 7 16NO CONNECTION33A BIT 8 (LSB) 17NO CONNECTION32DIGITAL GROUND 2 18NO CONNECTION31+DVS2 (Digital) 19+DVS2 (Digital)30+DVS1 (Digital) 20DIGITAL GROUND 229DIGITAL GROUND 1 21B BIT 8 (LSB)28B BIT 1 (MSB) 22B BIT 727B BIT SPECIFICATIONS(Typical at TA = 25 C, VRT = +4V