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ISL90840 の電気的特性と機能

ISL90840のメーカーはIntersil Corporationです、この部品の機能は「Low Noise/Low Power/I2C Bus/256 Taps」です。


製品の詳細 ( Datasheet PDF )

部品番号 ISL90840
部品説明 Low Noise/Low Power/I2C Bus/256 Taps
メーカ Intersil Corporation
ロゴ Intersil Corporation ロゴ 




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ISL90840 Datasheet, ISL90840 PDF,ピン配置, 機能
®
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ISL90840
Quad Digitally Controlled Potentiometers (XDCP™)
Data Sheet
July 27, 2005
FN8086.0
Low Noise, Low Power I2C® Bus, 256 Taps
The ISL90840 integrates four digitally controlled
potentiometers (XDCP) on a monolithic CMOS integrated
circuit.
The digitally controlled potentiometers are implemented with
a combination of resistor elements and CMOS switches. The
position of the wipers are controlled by the user through the
I2C bus interface. Each potentiometer has an associated
Wiper Register (WR) that can be directly written to and read
by the user. The contents of the WR controls the position of
the wiper.
The DCPs can be used as three-terminal potentiometers or
as two-terminal variable resistors in a wide variety of
applications including control, parameter adjustments, and
signal processing.
Ordering Information
PART NUMBER
PACKAGE
TEMP
RANGE
(°C)
RESISTANCE
OPTION
()
ISL90840UIV2027 20 Ld TSSOP -40 to +85
50K
ISL90840UIV2027Z 20 Ld TSSOP -40 to +85
(Notes 1 & 2)
(Pb-Free)
50K
ISL90840WIV2027 20 Ld TSSOP -40 to +85
10K
ISL90840WIV2027Z 20 Ld TSSOP -40 to +85
(Notes 1 & 2)
(Pb-Free)
10K
NOTES:
1. Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and
100% matte tin plate termination finish, which are RoHS
compliant and compatible with both SnPb and Pb-free soldering
operations. Intersil Pb-free products are MSL classified at Pb-
free peak reflow temperatures that meet or exceed the Pb-free
requirements of IPC/JEDEC J STD-020.
2. Contact factory for availability.
Features
• Four potentiometers in one package
• 256 resistor taps - 0.4% resolution
• I2C serial interface
- Three address pins, up to eight devices/bus
• Wiper resistance: 70typical @ 3.3V
• Standby current <5µA max
• Power supply: 2.7V to 5.5V
• 50k, 10ktotal resistance
• 20 Lead TSSOP
• Pb-free plus anneal available (RoHS compliant)
Pinout
ISL90840
(20 LEAD TSSOP)
TOP VIEW
RH3
RL3
RW3
A2
SCL
SDA
GND
RW2
RL2
RH2
1
2
3
4
5
6
7
8
9
10
20 RW0
19 RL0
18 RH0
17 D.N.C.
16 VCC
15 A1
14 A0
13 RH1
12 RL1
11 RW1
Functional Diagram
VCC
RH0
RH1
RH2
RH3
SCL
SDA
A0
A1
A2
I2C
INTERFACE
GND
RL0 RW0 RL1 RW1 RL2
RW2 RL3
RW3
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) and XDCP are registered trademarks of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.

1 Page





ISL90840 pdf, ピン配列
ISL90840
Absolute Maximum Ratings
Storage temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Voltage at any digital interface pin
with respect to GND . . . . . . . . . . . . . . . . . . . . . . -0.3V to VCC+0.3
VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6V
Voltage at any DCP pin with
respect to GND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to VCC
Lead temperature (soldering, 10s). . . . . . . . . . . . . . . . . . . . . . 300°C
IW (10s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±6mA
Latchup . . . . . . . . . . . . . . . . . . . . . . . . . . Class II, Level B at +85°C
ESD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >2kV Human Body Model
Recommended Operating Conditions
Industrial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C
VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.7V to 5.5V
Power rating of each DCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5mW
Wiper current of each DCP . . . . . . . . . . . . . . . . . . . . . . . . . . ±3.0mA
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
Analog Specifications Over recommended operating conditions unless otherwise stated.
SYMBOL
PARAMETER
TEST CONDITIONS
TYP
MIN (NOTE 1) MAX
UNIT
RTOTAL RH to RL resistance
W option
U option
10 k
50 k
RH to RL resistance tolerance
RW Wiper resistance
VCC = 3.3V @ 25°C, wiper current =
VCC/RTOTAL
CH/CL/CW Potentiometer capacitance (Note 15)
ILkgDCP Leakage on DCP pins (Note 15)
Voltage at pin from GND to VCC
VOLTAGE DIVIDER MODE (0V @ RLi; VCC @ RHi; measured at RWi, unloaded; i = 0, 1, 2, or 3)
INL Integral non-linearity
(Note 6)
-20 +20
70 200
10/10/25
0.1
1
-1 1
%
pF
µA
LSB
(Note 2)
DNL
Differential non-linearity
(Note 5)
Monotonic over all tap positions
-0.5
0.5 LSB
(Note 2)
ZSerror Zero-scale error
(Note 3)
W option
U option
0 1 7 LSB
0 0.5 2 (Note 2)
FSerror Full-scale error
(Note 4)
W option
U option
-7 -1
0 LSB
-2 -1 0 (Note 2)
VMATCH DCP to DCP matching
(Note 7)
TCV Ratiometric temperature coefficient
(Note 8)
Any two DCPs at same tap position, same
voltage at all RH terminals, and same voltage
at all RL terminals
DCP register set to 80 hex
-2
±4
2 LSB
(Note 2)
ppm/°C
RESISTOR MODE (Measurements between RWi and RLi with RHi not connected, or between RWi and RHi with RLi not connected. i = 0, 1, 2 or 3)
RINL Integral non-linearity
(Note 12)
DCP register set between 20 hex and FF
hex; monotonic over all tap positions
-1
1 MI
(Note 9)
RDNL Differential non-linearity
(Note 11)
-0.5 0.5 MI
(Note 9)
Roffset Offset
(Note 10)
W option
0 1 7 MI
(Note 9)
U option
0 0.5 2 MI
(Note 9)
RMATCH DCP to DCP matching
(Note 13)
Any two DCPs at the same tap position with
the same terminal voltages
-2
2 MI
(Note 9)
TCR
Resistance temperature coefficient
(Note 14)
DCP register set between 20 hex and FF hex
±45
ppm/°C
3 FN8086.0
July 27, 2005


3Pages


ISL90840 電子部品, 半導体
ISL90840
NOTES:
1. Typical values are for TA = 25°C and 3.3V supply voltage.
2. LSB: [V(RW)255 – V(RW)0]/255. V(RW)255 and V(RW)0 are V(RW) for the DCP register set to FF hex and 00 hex respectively. LSB is the
incremental voltage when changing from one tap to an adjacent tap.
3. ZS error = V(RW)0/LSB.
4. FS error = [V(RW)255 – VCC]/LSB.
5. DNL = [V(RW)i – V(RW)i-1]/LSB-1, for i = 1 to 255. i is the DCP register setting.
6. INL = V(RW)i – i - LSB – V(RW) for i = 1 to 255.
7. VMATCH = [V(RWx)i – V(RWy)i]/LSB, for i = 0 to 255, x = 0 to 3 and y = 0 to 3.
8.
TCV
=
-------M-----a----x----(--V----(---R-----W------)--i--)---–-----M-----i--n----(--V-----(--R-----W------)--i--)------ × ----1---0----6----- for i = 16 to 240 decimal, T = -40°C to 85°C. Max( ) is the maximum value of the wiper
[Max(V(RW)i) + Min(V(RW)i)] ⁄ 2 125°C voltage and Min ( ) is the minimum value of the wiper voltage over the temperature range.
9. MI = |R255 – R0|/255. R255 and R0 are the measured resistances for the DCP register set to FF hex and 00 hex respectively.
10. Roffset = R0/MI, when measuring between RW and RL.
Roffset = R255/MI, when measuring between RW and RH.
11. RDNL = (Ri – Ri-1)/MI, for i = 32 to 255.
12. RINL = [Ri – (MI • i) – R0]/MI, for i = 32 to 255.
13. RMATCH = (Ri,x – Ri,y)/MI, for i = 0 to 255, x = 0 to 3 and y = 0 to 3.
14.
TCR
=
----[---M-----a----x----(--R-----i--)---–-----M-----i--n----(--R-----i--)--]----
[Max(Ri) + Min(Ri)] ⁄ 2
×
----1---0----6-----
125 °C
for i = 32 to 255, T = -40°C to 85°C. Max( ) is the maximum value of the resistance and Min ( ) is the
minimum value of the resistance over the temperature range.
15. This parameter is not 100% tested.
Typical Performance Curves
160
140
VCC=2.7, T=-40°C
VCC=2.7, T=+85°C
VCC=2.7, T=+25°C
120
100
80
60
40
20
VCC=5.5, T=-40°C
VCC= 5.5, T=+85°C
VCC=5.5, T=+25°C
0
0 50 100 150 200 250
TAP POSITION (DECIMAL)
FIGURE 1. WIPER RESISTANCE vs TAP POSITION
[I(RW) = VCC / RTOTAL] FOR 50k(U)
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
2.7
-40°C
+25°C
3.2 3.7 4.2
VCC (V)
+85°C
4.7 5.2
FIGURE 2. STANDBY ICC vs VCC
6 FN8086.0
July 27, 2005

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共有リンク

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部品番号部品説明メーカ
ISL90840

Low Noise/Low Power/I2C Bus/256 Taps

Intersil Corporation
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