Zero DAC Re: Bastleni a tak ... :-(

[Daniel Valuch]

no ved presne o tom hovorim. Nijak som nechcel vyvracat fakt ze OPA627 
je najlepsi operak na svete pre high end audio. Uplne seriozne ma 
zaujimalo ma cim je lepsi ked za jeden z hlavnych parametrov sa povazuje 
rychlost prebehu (tak som to pochopil) a na trhu su operaky z rychlostou 
prebehu vyssou o dva rady a cenou o rad.
Na jednosmerny offset a bias prud sa u audia nehrame, takze to nie je 
dolezity parameter.
Neprudim, snazim sa len pochopit :-)


Tu su napriklad tie od analogu, TI robi podobne veci:

High Speed Op-Amps						
Part#	Small Signal Bandwidth	Slew Rate	Amplifiers Per Package	V Noise 
Density	Vcc-Vee	US Price 1000-4999
AD8057	325MHz	1.15KV/us	1	7nV/rtHz	3V-12V	$0.86
AD8058	325MHz	1.15KV/us	2	7nV/rtHz	3V-12V	$1.62
AD8002	600MHz	1.2KV/us	2	2nV/rtHz	6V-12V	$2.86
AD8023	125MHz	1.2KV/us	3	2nV/rtHz	4.2V-15V	$5.20
AD8036	240MHz	1.2KV/us	1	6.7nV/rtHz	6V-12V	$4.33
AD8045	1GHz	1.35KV/us	1	3nV/rtHz	3.3V-12V	$1.41
AD8075	550MHz	1.35KV/us	3	22nV/rtHz	9V-11V	$2.22
AD9631	320MHz	1.3KV/us	1	7nV/rtHz	6V-12V	$4.77
AD8055	300MHz	1.4KV/us	1	6nV/rtHz	8V-12V	$0.86
AD8056	300MHz	1.4KV/us	2	6nV/rtHz	8V-12V	$1.62
AD8005	270MHz	1.5KV/us	1	4nV/rtHz	4V-12V	$1.64
AD8037	270MHz	1.5KV/us	1	4.5nV/rtHz	6V-12V	$4.17
AD9632	250MHz	1.5KV/us	1	4.3nV/rtHz	6V-12V	$4.58
AD8017	160MHz	1.6KV/us	2	1.9nV/rtHz	4.4V-12V	$2.25
AD8074	600MHz	1.6KV/us	3	19.5nV/rtHz	9V-11V	$2.22
AD8099	500MHz	1.6KV/us	1	950pV/rtHz	5V-12V	$2.00
AD8001	880MHz	1KV/us	1	2nV/rtHz	6V-12V	$1.51
AD8007	650MHz	1KV/us	1	2.7nV/rtHz	5V-12V	$1.33
AD8008	650MHz	1KV/us	2	2.7nV/rtHz	5V-12V	$2.22
AD8013	480MHz	1KV/us	3	3.5nV/rtHz	4.2V-13V	$4.88
AD8016	380MHz	1KV/us	2	2.6nV/rtHz	6V-26V	$4.57
AD8048	260MHz	1KV/us	1	3.8nV/rtHz	6V-12V	$2.30
AD810	80MHz	1KV/us	1	2.9nV/rtHz	5V-36V	$2.19
AD8012	350MHz	2.25KV/us	2	2.5nV/rtHz	3V-12V	$2.17
AD811	140MHz	2.5KV/us	1	1.9nV/rtHz	9V-36V	$3.50
ADA4857-1	850MHz	2.8KV/us	1	4.4nV/rtHz	4.5V-10.5V	$1.49
ADA4857-2	750MHz	2.8KV/us	2	4.4nV/rtHz	4.5V-10.5V	$2.53
AD8011	400MHz	3.5KV/us	1	2nV/rtHz	3V-12V	$2.30
AD8003	1.65GHz	3.8KV/us	3	1.8nV/rtHz	4.5V-10V	$2.92
AD8004	250MHz	3KV/us	4	1.5nV/rtHz	4V-12V	$4.40
AD549	1MHz	3V/us	1	35nV/rtHz	10V-36V	$14.30
AD8000	1.58GHz	4.1KV/us	1	1.6nV/rtHz	4.5V-12V	$1.70
AD8014	400MHz	4KV/us	1	3.5nV/rtHz	4.5V-12V	$1.20
AD8009	1GHz	5.5KV/us	1	1.9nV/rtHz	5V-12V	$1.77