參數(shù)資料
型號： AD5170BRM50
廠商： ANALOG DEVICES INC
元件分類： 數(shù)字電位計
英文描述： 256-Position Two-Time Programmable I2C Digital Potentiometer
中文描述： 50K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 256 POSITIONS, PDSO10
封裝： 3 X 4.90 MM, MO-187BA, MSOP-10
文件頁數(shù)： 4/24頁
文件大?。?/td> 900K
代理商： AD5170BRM50
AD5170
ELECTRICAL CHARACTERISTICS — 10 k
, 50 k
, 100 k
VERSIONS
V
DD
= 5 V ± 10% or 3 V ± 10%, V
A
= V
DD
; V
B
= 0 V, –40°C < T
A
< +125°C, unless otherwise noted.
Table 2.
Parameter
Symbol
DC CHARACTERISTICS—RHEOSTAT MODE
Resistor Differential Nonlinearity
2
R-DNL
Resistor Integral Nonlinearity
2
R-INL
Nominal Resistor Tolerance
3
R
AB
Resistance Temperature Coefficient
(R
AB
/R
AB
)/T
R
WB
(Wiper Resistance)
R
WB
DC CHARACTERISTICS — POTENTIOMETER DIVIDER MODE (Specifications apply to all VRs)
Differential Nonlinearity
4
DNL
Integral Nonlinearity
4
INL
Voltage Divider Temperature
Coefficient
Full-Scale Error
V
WFSE
Zero-Scale Error
V
WZSE
RESISTOR TERMINALS
Voltage Range
5
V
A
,V
B
,V
W
Capacitance
6
A, B
C
A,
C
B
Capacitance
6
W
C
W
Shutdown Supply Current
7
I
A_SD
Common-Mode Leakage
I
CM
DIGITAL INPUTS AND OUTPUTS
Input Logic High
V
IH
Input Logic Low
V
IL
Input Logic High
V
IH
Input Logic Low
V
IL
Input Current
I
IL
Input Capacitance
6
C
IL
POWER SUPPLIES
Power Supply Range
V
DD RANGE
OTP Supply Voltage
8
V
DD_OTP
Supply Current
I
DD
OTP Supply Current
9
I
DD_OTP
Power Dissipation
10
P
DISS
Power Supply Sensitivity
PSS
DYNAMIC CHARACTERISTICS
11
Bandwidth –3 dB
BW
Total Harmonic Distortion
THD
W
V
W
Settling Time
(10 k/50 k/100 k)
Resistor Noise Voltage Density
e
N_WB
1
Typical specifications represent average readings at 25°C and V
DD
= 5 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.
3
V
AB
= V
DD
, Wiper (V
W
) = 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
= V
DD
and V
B
= 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 terminal. The A terminal is open circuited in shutdown mode.
8
Different from operating power supply, power supply OTP is used one time only.
9
Different from operating current, supply current for OTP lasts approximately 400 ms for one time only.
10
P
DISS
is calculated from (I
DD
× V
DD
). CMOS logic level inputs result in minimum power dissipation.
11
All dynamic characteristics use V
DD
= 5 V.
Rev. A | Page 4 of 24
Conditions
R
WB
, V
A
= no connect
R
WB
, V
A
= no connect
T
A
= 25°C
V
AB
= V
DD
, wiper = no connect
Code = 0x00, V
DD
= 5 V
Min
–1
–2.5
–20
–1
–1
Typ
1
±0.1
±0.25
35
160
±0.1
±0.3
15
Max
+1
+2.5
+20
200
+1
+1
Unit
LSB
LSB
%
ppm/°C
LSB
LSB
ppm/°C
Code = 0x80
(V
W
/V
W
)/T
Code = 0xFF
Code = 0x00
f = 1 MHz, measured to GND, code = 0x80
f = 1 MHz, measured to GND, code = 0x80
V
DD
= 5.5 V
V
A
= V
B
= V
DD
/2
V
DD
= 5 V
V
DD
= 5 V
V
DD
= 3 V
V
DD
= 3 V
V
IN
= 0 V or 5 V
V
IH
= 5 V or V
IL
= 0 V
V
DD_OTP
= 5.5 V, T
A
= 25°C
V
IH
= 5 V or V
IL
= 0 V, V
DD
= 5 V
V
DD
= 5 V ± 10%, code = midscale
R
AB
= 10 k, code = 0x80
R
AB
= 50 k, code = 0x80
R
AB
= 100 k, code = 0x80
V
A
=1 V rms, V
B
= 0 V, f = 1 kHz, R
AB
= 10 k
V
A
= 5 V, V
B
= 0 V, ±1 LSB error band
–2.5
0
GND
2.4
2.1
2.7
5.25
100
–1
1
45
60
0.01
1
5
3.5
±0.02
600
100
40
0.1
2
0
2.5
V
DD
1
0.8
0.6
±1
5.5
5.5
6
30
±0.08
LSB
LSB
V
pF
pF
μA
nA
V
V
V
V
μA
pF
V
V
μA
mA
μW
%/%
kHz
kHz
kHz
%
μs
t
S
R
WB
= 5 k, R
S
= 0
9
nV/√Hz
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