Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

AS1501-TZ Datasheet(PDF) 5 Page - ams AG

Part # AS1501-TZ
Description  Digital Potentiometer
Download  8 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  AMSCO [ams AG]
Direct Link  http://www.ams.com
Logo AMSCO - ams AG

AS1501-TZ Datasheet(HTML) 5 Page - ams AG

  AS1501-TZ Datasheet HTML 1Page - ams AG AS1501-TZ Datasheet HTML 2Page - ams AG AS1501-TZ Datasheet HTML 3Page - ams AG AS1501-TZ Datasheet HTML 4Page - ams AG AS1501-TZ Datasheet HTML 5Page - ams AG AS1501-TZ Datasheet HTML 6Page - ams AG AS1501-TZ Datasheet HTML 7Page - ams AG AS1501-TZ Datasheet HTML 8Page - ams AG  
Zoom Inzoom in Zoom Outzoom out
 5 / 8 page
background image
Data Sheet AS1500/1/2/3
Revision 1.0, Oct 2004
Page 5 of 8
AS150x – SPECIFICATIONS
(VDD = 3V±10% or 5V±10%, VA = VDD, VB = 0V,
–40°C
≤TA≤+125°C unless otherwise noted.)
ELECTRICAL CHARACTERISTICS–ALL
VERSIONS
Parameter
Sym-
bol
Conditions Min
Typ
21
Max Unit
SWITCHING CHARACTERISTICS 22, 23
Input Clock
Pulsewidth
tCH, tCL
Clock Level
High or Low
50
ns
Data Setup Time
tDS
5ns
Data Hold Time
tDH
5ns
CSN Setup Time
tCSS
10
ns
CSN High
Pulsewidth
tCSW
10
ns
CK Fall to CSN Rise
Hold Time
tCSH
0ns
CSN Rise to Clock
Rise Setup
tCS1
10
ns
Table 5: Switching Characteristics
Detailed Description
Serial-Programming
Programming of the AS150x is done via the 3 wire serial
interface. The three input signals are serial data input
(SDI), clock(CK) and chip select (CS). A programming
sequence consists of 10-bit, where the last eight bit
contain the code word for the resistor value. The first two
bits A1 and A0 have to be low(see Table ). The data is
shifted into the internal 10 Bit register with the rising edge
of the CK signal. With the rising edge of the CSN signal
the data becomes valid and the resistance is updated (see
figure 2). A detailed block diagram is shown in figure 3.
A1 A0
D7
D6
D5
D4
D3
D2
D1
D0
0
0 MSB
Data
LSB
Table 6: Serial data format (16 bits)
21
Typicals represent average readings at 25°C and VDD=5V.
22
Guaranteed by design and not subject to production test.
Resistor-terminal capacitance tests are measured with 2.5V
bias on the measured terminal. The remaining resistor
terminals are left open circuit.
23
See timing diagram for location of measured values. All input
control voltages are specified with tR = tF = 1ns (10% to 90% of
VDD) and timed from a voltage level of 1.6V. Switching
characteristics are measured using VDD=3V or 5V. To avoid
false clocking, a minimum input logic slew rate of 1V/µs should
be maintained.
Figure 2: Timing Diagram
Figure 3: Detailed Timing Diagram
Rheostat Operation
The digital potentiometer family AS150x offers nominal
resistor values of 10k
Ω, 20 kΩ, 50kΩ and 100kΩ. The
resistor has 256 contact points where the wiper can access
the resistor. The 8-bit code word determines the position
of the wiper and is decoded through an internal logic. The
lowest code 00h is related to the terminal B. The
resistance is then only determined by the wiper resistance
(100
Ω). The resistance for the next code 01h is the
nominal resistor RAB (10k
Ω, 20 kΩ, 50kΩ or 100kΩ)
divided through 256 plus the wiper resistor. In case of
AS1501 (10k
Ω) the total resistance is 39Ω+100Ω=139Ω.
Accordingly the resistor for code 02h is 78
Ω+100Ω=178Ω.
The last code 255h does not connect to terminal A directly
(see Figure 5). So the maximum value is 10000
Ω - 39Ω
+100
Ω = 10061Ω. The general formula for the calculation
of the resistance RWB is:
RWB (Dx)= (Dx)/256
⋅RAB + RW
where RAB is the nominal resistance between terminal A
and B, RW is the wiper resistance and DX is the 8-Bit Code
word. In Table 7 the resistor values between the wiper and
terminal B for AS1501 are given for specific codes DX. In
the zero-scale condition the wiper resistance of 100
remains present.
1
1
1
0
0
0
0V
VOUT
CS
CK
SD
VD
DAC Register
A1 A0 D7D6D5 D4 D3D2D1 D0
SDI
VOUT
CK
CSN
VDD
0
0
0
0V
1
1
1
±1% Error
±1%
AX or
AX or
tD
tD
tC
tCS
tCS
tCS
tCS
tS
tCL


Similar Part No. - AS1501-TZ

ManufacturerPart #DatasheetDescription
logo
ams AG
AS1501-T AMSCO-AS1501-T Datasheet
405Kb / 14P
   Digital Potentiometer
More results

Similar Description - AS1501-TZ

ManufacturerPart #DatasheetDescription
logo
ams AG
AS1500 AMSCO-AS1500_1 Datasheet
405Kb / 14P
   Digital Potentiometer
logo
Copal Electronics
DP7241 COPAL-DP7241 Datasheet
174Kb / 16P
   Quad Digital Potentiometer
logo
Maxim Integrated Produc...
DS1267B MAXIM-DS1267B Datasheet
413Kb / 13P
   Dual Digital Potentiometer
19-6589; Rev 1; 1/14
logo
Copal Electronics
DP7221 COPAL-DP7221 Datasheet
171Kb / 16P
   Dual Digital Potentiometer
DP7251 COPAL-DP7251 Datasheet
168Kb / 15P
   Quad Digital Potentiometer
logo
Maxim Integrated Produc...
DS1805 MAXIM-DS1805 Datasheet
614Kb / 10P
   Addressable Digital Potentiometer
Rev 0; 4/02
logo
Dallas Semiconductor
DS1844 DALLAS-DS1844 Datasheet
289Kb / 14P
   Quad Digital Potentiometer
logo
Maxim Integrated Produc...
DS1868B MAXIM-DS1868B Datasheet
423Kb / 13P
   Dual Digital Potentiometer
19-6593; Rev 1; 1/14
logo
Dallas Semiconductor
DS1844 DALLAS-DS1844_05 Datasheet
260Kb / 14P
   Quad Digital Potentiometer
logo
Maxim Integrated Produc...
DS1844 MAXIM-DS1844 Datasheet
265Kb / 14P
   Quad Digital Potentiometer
053105
More results


Html Pages

1 2 3 4 5 6 7 8


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com