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AD5207 Datasheet(PDF) 3 Page - Analog Devices

Part No. AD5207
Description  2-Channel, 256-Position Digital Potentiometer
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD5207 Datasheet(HTML) 3 Page - Analog Devices

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REV. 0
–3–
AD5207
Parameter
Symbol
Conditions
Min
Typ
1
Max
Unit
INTERFACE TIMING
CHARACTERISTICS
Applies to All Parts
6, 11
Input Clock Pulsewidth
tCH, tCL
Clock Level High or Low
10
ns
Data Setup Time
tDS
5ns
Data Hold Time
tDH
5ns
CLK to SDO Propagation Delay
12
tPD
RL = 1 k
Ω to 5 V, C
L < 20 pF
1
25
ns
CS Setup Time
tCSS
10
ns
CS High Pulsewidth
tCSW
10
ns
CLK Fall to
CS Fall Hold Time
tCSH0
0ns
CLK Fall to
CS Rise Hold Time
tCSH1
0ns
CS Rise to Clock Rise Setup
tCS1
10
ns
NOTES
1 Typicals represent average readings at 25
°C and VDD = 5 V, VSS = 0 V.
2 Resistor position nonlinearity error R-INL is the deviation from an ideal value measured between the maximum resistance and the minimum resistance wiper
positions. R-DNL measures the relative step change from ideal between successive tap positions. Parts are guaranteed monotonic. I W = VDD/R for both VDD = 5 V,
VSS = 0 V.
3 V
AB = VDD, Wiper (VW) = No connect.
4 INL and DNL are measured at V
W with the RDAC configured as a potentiometer divider similar to a voltage output D/A converter. V A = VDD and VB = 0 V. DNL
specification limits of
±1 LSB maximum are Guaranteed Monotonic operating conditions.
5 Resistor Terminals A, B, W have no limitations on polarity with respect to each other.
6 Guaranteed by design and not subject to production test.
7 Measured at the A
X terminals. All AX terminals are open-circuited in shut-down mode.
8 P
DISS is calculated from (IDD
× VDD). CMOS logic level inputs result in minimum power dissipation.
9 All dynamic characteristics use V
DD = 5 V, VSS = 0 V.
10 Measured at a V
W pin where an adjacent VW pin is making a full-scale voltage change.
11 See timing diagram for location of measured values. All input control voltages are specified with t
R = tF = 2 ns (10% to 90% of 3 V) and timed from a voltage level of
1.5 V. Switching characteristics are measured using VDD = 5 V.
12 Propagation delay depends on value of V
DD, RL, and CL; see applications text.
The AD5207 contains 474 transistors. Die Size: 67 mil
× 69 mil, 4623 sq. mil.
Specifications subject to change without notice.
1
0
1
0
1
0
SDI
CLK
CS
VOUT
RDAC REGISTER LOAD
A1
A0
D7
D6
D5
D4
D3
D2
D1
D0
Figure 1a. Timing Diagram
1
0
1
0
1
0
1
0
VDD
0V
SDI
(DATA IN)
SDO
(DATA OUT)
CLK
CS
VOUT
Ax OR Dx
Ax OR Dx
A'x OR D'x
A'x OR D'x
1LSB ERROR BAND
1LSB
tDS
tDH
tPD_MAX
tCS1
tCSH1
tCSW
tS
tCL
tCH
tCSH0
tCSS
Figure 1b. Detail Timing Diagram


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