X-Authentication-Warning: delorie.com: mail set sender to geda-user-bounces using -f
X-Recipient: geda-user AT delorie DOT com
X-Amavis-Modified: Mail body modified (using disclaimer) -
	mta-out04.sim.rediris.es
Date: Sun, 9 Apr 2023 08:49:19 +0200
From: "Gabriel Paubert (paubert AT iram DOT es) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
To: "karl AT aspodata DOT se [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
Subject: Re: [geda-user] Possible attribute conflict for refdes: R35
Message-ID: <ZDJf77WYPzukCOpS@lt-gp.iram.es>
References: <20230408211414 DOT 675848499AA9 AT turkos DOT aspodata DOT se>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20230408211414.675848499AA9@turkos.aspodata.se>
X-Proofpoint-GUID: u7oPO6tvs2a-1rbo5hFVd-WLQ3P4eSQ2
X-Proofpoint-ORIG-GUID: u7oPO6tvs2a-1rbo5hFVd-WLQ3P4eSQ2
X-Proofpoint-Virus-Version: vendor=baseguard
 engine=ICAP:2.0.254,Aquarius:18.0.942,Hydra:6.0.573,FMLib:17.11.170.22
 definitions=2023-04-09_03,2023-04-06_03,2023-02-09_01
X-Proofpoint-Spam-Details: rule=outbounddefault_notspam policy=outbounddefault score=0 spamscore=0
 clxscore=1011 mlxscore=0 lowpriorityscore=0 mlxlogscore=708 phishscore=0
 adultscore=0 bulkscore=0 suspectscore=0 malwarescore=0 impostorscore=0
 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1
 engine=8.12.0-2303200000 definitions=main-2304090062
Reply-To: geda-user AT delorie DOT com
Errors-To: nobody AT delorie DOT com
X-Mailing-List: geda-user AT delorie DOT com
X-Unsubscribes-To: listserv AT delorie DOT com
Precedence: bulk

On Sat, Apr 08, 2023 at 11:14:14PM +0200, karl AT aspodata DOT se [via geda-user AT delorie DOT com] wrote:
>  What value to be used for a resistor array with R1 = R4 < R2 = R3 ?

You mean like Vishay's ACAS series?

I've been using them quite frequently for over a decade. 

What I've done is to define a symbol with multiple slots (actually 2 in
my case since I use ACASN, not ACASA) and I have added another attribute
("label" or "val" depending on my mood at the time) which is visible
in the symbol (and therefore promoted) and has a default value of "?".

Then I just edit this value on the symbol instance. It's not perfect
since it does not enforce R1 = R4 and R2 = R3, but it's only a
documentation item. The important information for assembly is the device
name (for example ACASN1002S5002).

But maybe someone has a better solution.

	Regards,
	Gabriel


> 
> The technical answer would be to use the part number, but then it would
> be harder to understand the circuit since the resistance value isn't 
> obvious.
> One could use the pin label (as e.g. in mcu use), but that would make it
> hard to change the "value" to e.g. 1k, or to change it to discrete resistors.
> 
> Any idea ?
> 
> Regards,
> /Karl Hammar
>