AD8400 Analog Devices, AD8400 Datasheet - Page 4

• Manufacturer Part Number: AD8400
• Description: Single-channel Digital Potentiometer
• Manufacturer: Analog Devices

AD8400/AD8402/AD8403–SPECIFICATIONS
ELECTRICAL CHARACTERISTICS–1 k VERSION
Parameter
DC CHARACTERISTICS RHEOSTAT MODE Specifications Apply to All VRs
DC CHARACTERISTICS POTENTIOMETER DIVIDER Specifications Apply to All VRs
RESISTOR TERMINALS
DIGITAL INPUTS AND OUTPUTS
POWER SUPPLIES
DYNAMIC CHARACTERISTICS
NOTES
11
12
13
14
15
16
17
19
10
11
Specifications subject to change without notice.
18
1
1
DNL Specification limits of ± 1 LSB maximum are Guaranteed Monotonic operating conditions. See TPC 28 test circuit.
resistor terminals are left open circuit.
Typicals represent average readings at 25°C and V
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. See TPC 29 test circuit.
I
V
INL and DNL are measured at V
Resistor terminals A, B, W have no limitations on polarity with respect to each other.
Guaranteed by design and not subject to production test. Resistor-terminal capacitance tests are measured with 2.5 V bias on the measured terminal. The remaining
Measured at the Ax terminals. All Ax terminals are open circuited in shutdown mode.
P
All Dynamic Characteristics use V
Measured at a V
Worst-case supply current consumed when input logic level at 2.4 V, standard characteristic of CMOS logic. See TPC 20 for a plot of I
W
Resistor Differential NL
Resistor Nonlinearity
Nominal Resistance
Resistance Tempco
Wiper Resistance
Nominal Resistance Match
Resolution
Integral Nonlinearity
Differential Nonlinearity
Voltage Divider Temperature Coefficent
Full-Scale Error
Zero-Scale Error
Voltage Range
Capacitance
Capacitance
Shutdown Supply Current
Shutdown Wiper Resistance
Input Logic High
Input Logic Low
Input Logic High
Input Logic Low
Output Logic High
Output Logic Low
Input Current
Input Capacitance
Power Supply Range
Supply Current (CMOS)
Supply Current (TTL)
Power Dissipation (CMOS)
Power Supply Sensitivity
Bandwidth –3 dB
Total Harmonic Distortion
V
Resistor Noise Voltage
Crosstalk
DISS
AB
W
= 500 µA for V
= V
Settling Time
is calculated from (I
DD
, Wiper (V
11
6
6
Ax, Bx
Wx
W
5
DD
pin where an adjacent V
6
W
= 3 V and I
3
) = No Connect.
4
2
8
DD
2
4
× V
7
9
DD
W
W
DD
= 2.5 mA for V
). CMOS logic level inputs result in minimum power dissipation.
with the RDAC configured as a potentiometer divider similar to a voltage output D/A converter. V
6, 10
= 5 V.
W
pin is making a full-scale voltage change.
Symbol
R-DNL
R-INL
R
∆R
R
∆R/R
N
INL
DNL
DNL
∆V
V
V
V
C
C
I
R
V
V
V
V
V
V
I
C
V
I
I
P
PSS
PSS
BW_1K
THD
t
e
C
DD
DD
S
A_SD
IL
DD
DD
NWB
DISS
AB
W
WFSE
WZSE
A, B, W
W_SD
IH
IL
IH
IL
OH
OL
DD
A, B
W
IL
T
AB
W
= 5 V.
= 5 V for 1 kΩ version.
/∆T
Range
/∆T
AB
W
Conditions
R
R
T
V
I
CH 1 to 2, V
V
V
Code = 80
Code = FF
Code = 00
f = 1 MHz, Measured to GND, Code = 80
f = 1 MHz, Measured to GND, Code = 80
V
V
V
V
V
V
R
I
V
V
V
V
∆V
∆V
R = 1 kΩ
V
V
R
V
W
OL
WB
WB
AB
DD
DD
A
A
DD
DD
DD
DD
L
IN
IH
IH
IH
A
A
WB
A
A
= 1 V/R
DD
DD
= 1 V rms + 2 V dc, V
= V
= V
= V
= 2.2 kΩ to V
= V
= 25°C, Model: AD840XYY1
= 1.6 mA, V
, V
, V
= V
= 0 V or 5 V, V
= V
= 2.4 V or 0.8 V, V
= V
= 5 V
= 3 V, T
= 5 V
= 5 V
= 3 V
= 3 V
= 500 Ω, f = 1 kHz, RS = 0
= 5 V ± 10%
= 3 V ± 10%
DD
A
A
DD
DD
DD
DD
DD
DD
= No Connect
= No Connect
, V
, V
, V
, V
, Wiper = No Connect
H
H
AB
H
or V
or V
B
B
B
B
AB
A
= 0 V
= 0 V, SHDN = 0, V
= 0 V, SHDN = 0
= 0 V, ± 1% Error Band
= 25°C
IL
IL
= V
DD
DD
= 0 V
= 0 V, V
= 5 V
DD
DD
, T
= 5 V
DD
B
A
= 2 V dc, f = 1 kHz
DD
= 5.5 V
= 25°C
= 5.5 V
DD
(V
–40 C ≤ T
= 5 V
DD
= 3 V
H
H
A
≤ +125 C unless otherwise noted.)
10% or 5 V
Min
–5
–4
0.8
8
–6
–4
–5
–20
0
0
2.4
2.1
V
2.7
DD
– 0.1
A
Typ
–1
± 1.5
1.2
700
53
0.75
± 2
–1.5
–2
25
–12
6
75
120
0.01
50
5
0.01
0.9
0.0035
0.05
5,000
0.015
0.5
3
–65
= V
DD
10%, V
versus logic voltage.
1
DD
and V
Max
+3
+4
1.6
100
2
+6
+2
+5
0
10
V
5
100
0.8
0.6
0.4
± 1
5.5
5
4
27.5
0.008
0.13
A
DD
= V
B
= 0 V.
DD
, V
Unit
LSB
LSB
kΩ
ppm/°C
Ω
%
Bits
LSB
LSB
LSB
ppm/°C
LSB
LSB
V
pF
pF
µA
Ω
V
V
V
V
V
V
µA
pF
V
µA
mA
µW
%/%
%/%
kHz
%
µs
nV/√Hz
dB
B
= 0 V,