1 a/d and d/a converters n overview the AN8124K is a 8-bit a/d and d/a compound con- verter for image processing. n features reference voltage source built-in maximum conversion rate : 20 msps (min.) sample holding circuit not required low consumption power : 250 mw (typ.) digital input/output level : ttl compatible AN8124K 8-bit a/d and d/a compound converter unit : mm 1 10.16 0.25 0.35 + 0 .1 0 .0 5 3?5? 2 3 4 5 6 7 8 9 10 11 12 13 14 15 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 8.6 0.3 4.7 0.25 3.3 0.25 0.9 0.25 1.778 0.5 0.1 1.0 0.25 30-pin sdip package (sdip030-p-0400) 26.7 0.3 + 26 25 23 22 21 20 19 18 17 16 15 12 14 13 11 6 5 3 2 1 30 29 28 24 10 8 7 4 adc block dac block v ib v c nclk io do6 do7 do8 dv cc di1 di2 di3 di4 di5 do5 do4 do3 do2 do1 adclk dgnd v rb agnd v in av cc v rt av cc i o di6 di7 di8 daclk dgnd agnd i ref v ref 9 27 n block diagram maintenance/ discontinued maintenance/discontinued includes following four product lifecycle stage. planed maintenance type maintenance type planed discontinued typed discontinued type please visit following url about latest information. http://www.semicon.panasonic.co.jp/en/
2 a/d and d/a converters AN8124K parameter symbol rating unit v cc i cc v in v clk i oh i ol v rt v rb v di i o i ref p d t opr t stg supply voltage supply current analogue input voltage digital input voltage digital output current digital output current digital input voltage analogue output current reference current power dissipation operating ambient temperature storage temperature v ma v v ma ma v v v ma ma mw ?c ?c n absolute maximum rating (ta=25?c) 7 100 ?0.5 to v cc + 0.3 ?0.5 to v cc + 0.3 ?5 15 ?0.5 to v cc + 0.3 ?0.5 to v cc + 0.3 ?0.5 to v cc + 0.3 30 10 700 ?0 to + 70 ?5 to + 150 reference resistive voltage parameter symbol condition typ max unit n recommended operating conditions ( ta=25?c) supply voltage analogue input voltage output load resistance setting-up time holding time refer to the timing chart. refer to the timing chart. refer to the timing chart. refer to the timing chart. v cc v in r o v ih v il t wh t wl t s t h 5 220 5.25 v rt 0.8 v v w v v ns ns ns ns min 4.75 v rb 2.4 25 25 20 20 clock input pulse width digital input voltage parameter symbol condition min typ max unit n electrical characteristics (v cc =5v, ta=25?c) supply current 3.1 1.1 ?0 v cc ?0.8 33 i cc v rt v rb i in i ih i il v oh v ol dg dp s/n 80 3.9 1.9 120 30 0.4 ma v v a a a v v % deg db 50 3.5 1.5 40 1 0.5 40 f clk =15mhz, r ref =1.8k w v in = 2.5v v in = 2.4v v il = 0.4v i oh = ?ma i ol =2ma f in = 4mhz, f s = 20mhz differential gain differential phase quantization noise clock input current digital output voltage input bias current reference voltage a/d, d/a maintenance/ discontinued maintenance/discontinued includes following four product lifecycle stage. planed maintenance type maintenance type planed discontinued typed discontinued type please visit following url about latest information. http://www.semicon.panasonic.co.jp/en/
3 a/d and d/a converters AN8124K parameter symbol condition min typ max unit n electrical characteristic (cont.) (v cc =5v, ta=25?c) resolution maximum conversion rate linearity error differential linearity error equivalent input impedance input capacitance digital output delay resolution maximum conversion rate linearity error differential linearity error full-scale current settling time analogue output delay 20 20 3.64 8 0.5 500 40 25 8 4.55 25 1 0.5 0.5 0.5 5.45 50 res f cmax e l e d r in c in t d1 res f cmax e l e d i fs t st t d2 bit msps lsb lsb k w pf ns bit msps lsb lsb ma ns ns v rt = 3.5v, v rb =1.5v v rt = 3.5v, v rb = 1.5v v in = 2.5v v in = 2.5v r out = 220 w , r ref = 1.8k w r out = 220 w , r ref = 1.8k w r out = 220 w , r ref = 1.8k w r out = 220 w , r ref = 1.8k w r out = 220 w , r ref = 1.8k w a/d d/a n n + 1 clock input t d1 analogue input (comparator output) (data latch output) digital output n + 1 n + 2 n n n + 1 n ?1 n sampling point n a/d sampling timing chart maintenance/ discontinued maintenance/discontinued includes following four product lifecycle stage. planed maintenance type maintenance type planed discontinued typed discontinued type please visit following url about latest information. http://www.semicon.panasonic.co.jp/en/
4 a/d and d/a converters AN8124K n d/a timing chart t d2 digital input dn dn + 1 dn ?1 2.4v 0.8v t s t h 1.6v t wh t wl 10% an ?1 90% an t st clock input analogue output n pin descriptions pin no. pin name symbol symbol 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 digital output 2-bit digital output 1-bit (msb) a/d convertor clock input digital ground reference voltage low level analogue ground analogue input pin analogue power supply pin reference voltage high level analogue power supply pin analogue output reference current setting analogue ground digital ground d/a convertor clock input do2 do1 adclk dgnd v rb agnd v in av cc v rt av cc i out i ref agnd dgnd daclk digital input 8-bit (lsb) digital input 7-bit digital input 6-bit digital input 5-bit digital input 4-bit digital input 3-bit digital input 2-bit digital input 1-bit (msb) digital power supply pin digital output 8-bit (lsb) digital output 7-bit digital output 6-bit digital output 5-bit digital output 4-bit digital output 3-bit di8 di7 di6 di5 di4 di3 di2 di1 dv cc do8 do7 do6 do5 do4 do3 pin no. pin name 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 maintenance/ discontinued maintenance/discontinued includes following four product lifecycle stage. planed maintenance type maintenance type planed discontinued typed discontinued type please visit following url about latest information. http://www.semicon.panasonic.co.jp/en/
5 a/d and d/a converters AN8124K + + + + 2 3 4 5 6 7 8 9 10 11 12 13 14 15 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 1 av cc dv cc agnd dgnd v in c9 1 f r11 100 w r12 100 w r16 1k w r14 200 w r13 400 w q1 q2 q3 q4 r15 100k w c11 2.2 f c3 22 f c4 0.1 f r1 2k w r10 220 w v out do2 do1 (msb) adclk dgnd v rb agnd v in av cc v rt av cc i out i ref agnd dgnd daclk do3 do4 do5 do6 do7 do8 (lsb) dv cc di1 (msb) di2 di3 di4 di5 di6 di7 di8 (lsb) c6 22 f c5 0.1 f AN8124K n application circuit maintenance/ discontinued maintenance/discontinued includes following four product lifecycle stage. planed maintenance type maintenance type planed discontinued typed discontinued type please visit following url about latest information. http://www.semicon.panasonic.co.jp/en/
request for your special attention and precautions in using the technical information and semiconductors described in this book (1) if any of the products or technical information described in this book is to be exported or provided to non-residents, the laws and regulations of the exporting country, especially, those with regard to security export control, must be observed. (2) the technical information described in this book is intended only to show the main characteristics and application circuit examples of the products, and no license is granted under any intellectual property right or other right owned by our company or any other company. therefore, no responsibility is assumed by our company as to the infringement upon any such right owned by any other company which may arise as a result of the use of technical information described in this book. (3) the products described in this book are intended to be used for standard applications or general electronic equipment (such as office equipment, communications equipment, measuring instruments and household appliances). consult our sales staff in advance for information on the following applications: ? special applications (such as for airplanes, aerospace, automobiles, traffic control equipment, combustion equipment, life support systems and safety devices) in which exceptional quality and reliability are required, or if the failure or malfunction of the prod- ucts may directly jeopardize life or harm the human body. ? any applications other than the standard applications intended. (4) the products and product specifications described in this book are subject to change without notice for modification and/or im- provement. at the final stage of your design, purchasing, or use of the products, therefore, ask for the most up-to-date product standards in advance to make sure that the latest specifications satisfy your requirements. (5) when designing your equipment, comply with the range of absolute maximum rating and the guaranteed operating conditions (operating power supply voltage and operating environment etc.). especially, please be careful not to exceed the range of absolute maximum rating on the transient state, such as power-on, power-off and mode-switching. otherwise, we will not be liable for any defect which may arise later in your equipment. even when the products are used within the guaranteed values, take into the consideration of incidence of break down and failure mode, possible to occur to semiconductor products. measures on the systems such as redundant design, arresting the spread of fire or preventing glitch are recommended in order to prevent physical injury, fire, social damages, for example, by using the products. (6) comply with the instructions for use in order to prevent breakdown and characteristics change due to external factors (esd, eos, thermal stress and mechanical stress) at the time of handling, mounting or at customer's process. when using products for which damp-proof packing is required, satisfy the conditions, such as shelf life and the elapsed time since first opening the packages. (7) this book may be not reprinted or reproduced whether wholly or partially, without the prior written permission of matsushita electric industrial co., ltd. maintenance/ discontinued maintenance/discontinued includes following four product lifecycle stage. planed maintenance type maintenance type planed discontinued typed discontinued type please visit following url about latest information. http://www.semicon.panasonic.co.jp/en/
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