ha19510/mp high-speed, low-power 8-bit flash d/a converter november 1996 description the ha19510/mp consists of high-speed, low-power 8-bit d/a converters. the digital and clock inputs of these monolithic bipolar lsis are fully ttl/cmos compatible. the noise-minimizing internal reference voltage generator and high conversion rate (f clk = 40 mhz min) make these devices suitable for high-speed image processing applications. features 8-bit resolution conversion rate: 40 mhz (min) single power supply: +5 v ttl/cmos compatible clock and digital inputs internal reference voltage: +3.0 v (typ) low power consumption: 225 mw (typ) applications video signal processing image processing, etc. ordering information type no. package ha19510 300mil 18-pin plastic dip (dp-18a) HA19510MP 18-pin plastic qfi (mp-18)
ha19510/mp 2 pin arrangement 1
2
3
4
5
6
7
8
9
b1(lsb)
b2
b3
b4
b5
b6
b7
b8(msb)
clk 18
17
16
15
14
13
12
11
10 comp
dac out
a gnd
d gnd vcc vcc vcc d a in out ref ref v v a ?ha19510 ?HA19510MP (top view) (top view) 16
15
14
13
12 3
4
5
6
7 dac out
in
out b3
b4
b5
b6
b7 17 18 1 2 8 9 10 11 vcc vcc a a ref ref v v a gnd d gnd clk b8(msb) comp d b1(lsb) b2 vcc
ha19510/mp 3 pin descriptions pin no. symbol function 1d v cc digital power supply (+5 v) 2 comp phase compensation 3a v cc analog power supply (+5 v) 4 dac out analog voltage output 5v ref in reference voltage input 6v ref out reference voltage output 7a v cc analog power supply (+5 v) 8 agnd analog ground 9 dgnd digital ground 10 clk clock input 11 b8 digital input (msb) 12 b7 digital input 13 b6 digital input 14 b5 digital input 15 b4 digital input 16 b3 digital input 17 b2 digital input 18 b1 digital input (lsb)
ha19510/mp 4 block diagram + dvcc d gnd avcc ;1,000 pf
ceramic avcc a gnd 11 12 13 14 15 16 17 18 8 7 3 9 1 4 b8
(msb) b7 b6 b5 b4 b3 b2 b1
(lsb) 2 5 6 10 clk out ref v in ref v comp dac out r-2r network current source master slave
latch
(8bit) reference
voltage clock driver 0.1 m f 0.01 m f absolute maximum ratings (ta = 25 c, unless otherwise specified) item symbol rating unit power supply voltage v cc +7.0 v digital input voltage v in 0 to v cc v power dissipation p t 500 mw operating temperature topr 0 to +70 c storage temperature tstg C55 to +125 c
ha19510/mp 5 electrical characteristics (ta = 25 c, v cc = 5.0 v, and pins 5 and 6 are shorted, unless otherwise specified) item symbol min typ max unit test conditions resolution 8 8 8 bit conversion rate f clk 40 mhz linearity error le C0.5 0.5 lsb clock pulsewidth h-level t wh 12.5 ns f clk = 40 mhz clock pulsewidth l-level t wl 12.5 ns f clk = 40 mhz data setup time t su 10 ns f clk = 40 mhz data hold time t h 10 ns f clk = 40 mhz power supply voltage v cc 4.75 5.00 5.25 v current consumption i cc 4560ma digital input voltage v ih 2.0 v cc v v il 0 0.8 v digital input current i ih 20 m av ih = 2.7 v i il C400 m av il = 0.4 v reference input current i ref in C20 0 20 m av ref in = 3.0 v reference input voltage v ref in 2.0 3.0 4.0 v reference output voltage v ref out 3.0 3.1 3.22 v analog output voltage full scale v fs v cc C 15 m v cc v cc + 15 m vv ih 3 2.0 v zero scale v zs 3.94 4.00 4.06 v v il 0.8 v output impedance zout 55 75 95 w
ha19510/mp 6 timing chart clk b6 dac out
(stair step) t wh t wl t su t h 1.5v 3.5v 0.5v 1.5v 3.5v 0.5v b1 input code table b8 b7 b6 b5 b4 b3 b2 b1 aout (v) 0 0 00 00 0 0v zs 0 0 00 00 0 1v zs + 1 lsb 1 1 11 11 1 0v fs C 1 lsb 1 1 11 11 1 1v fs note: 1 lsb = (v fs C v zs )/255
ha19510/mp 7 when using this document, keep the following in mind: 1. this document may, wholly or partially, be subject to change without notice. 2. all rights are reserved: no one is permitted to reproduce or duplicate, in any form, the whole or part of this document without hitachis permission. 3. hitachi will not be held responsible for any damage to the user that may result from accidents or any other reasons during operation of the users unit according to this document. 4. circuitry and other examples described herein are meant merely to indicate the characteristics and performance of hitachis semiconductor products. hitachi assumes no responsibility for any intellectual property claims or other problems that may result from applications based on the examples described herein. 5. no license is granted by implication or otherwise under any patents or other rights of any third party or hitachi, ltd. 6. medical applications: hitachis products are not authorized for use in medical applications without the written consent of the appropriate officer of hitachis sales company. such use includes, but is not limited to, use in life support systems. buyers of hitachis products are requested to notify the relevant hitachi sales offices when planning to use the products in medical applications. hitachi, ltd.
semiconductor & ic div.
nippon bldg., 2-6-2, ohte-machi, chiyoda-ku, tokyo 100, japan
tel: tokyo (03) 3270-2111
fax: (03) 3270-5109 for further information write to:
hitachi america, ltd.
semiconductor & ic div.
2000 sierra point parkway
brisbane, ca. 94005-1835
u s a
tel: 415-589-8300
fax: 415-583-4207
hitachi europe gmbh
electronic components group
continental europe
dornacher stra? 3
d-85622 feldkirchen
m?nchen
tel: 089-9 91 80-0
fax: 089-9 29 30 00
hitachi europe ltd.
electronic components div.
northern europe headquarters
whitebrook park
lower cookham road
maidenhead
berkshire sl6 8ya
united kingdom
tel: 0628-585000
fax: 0628-778322
hitachi asia pte. ltd.
16 collyer quay #20-00
hitachi tower
singapore 0104
tel: 535-2100
fax: 535-1533
hitachi asia (hong kong) ltd.
unit 706, north tower,
world finance centre,
harbour city, canton road
tsim sha tsui, kowloon
hong kong
tel: 27359218
fax: 27306071
|
