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參數(shù)資料
| 型號： | X9418YP24I-2.7 |
| 元件分類： | 數(shù)字電位計 |
| 英文描述： | DUAL 2.5K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 64 POSITIONS, PDIP24 |
| 封裝： | PLASTIC, DIP-24 |
| 文件頁數(shù)： | 4/21頁 |
| 文件大?。?/td> | 385K |
| 代理商： | X9418YP24I-2.7 |
X9418
Characteristics subject to change without notice.
12 of 21
REV 1.1.5 7/23/02
www.xicor.com
D.C. OPERATING CHARACTERISTICS (Over the recommended operating conditions unless otherwise specified.)
Notes: (1) Absolute linearity is utilized to determine actual wiper voltage versus expected voltage as determined by wiper position when used
as a potentiometer.
(2) Relative linearity is utilized to determine the actual change in voltage between two successive tap positions when used as a potenti-
ometer. It is a measure of the error in step size.
(3) MI = RTOT/63 or (RH—RL)/63, single pot
ENDURANCE AND DATA RETENTION
CAPACITANCE
POWER-UP TIMING
Power Up Requirements (Power up sequencing can affect correct recall of the wiper registers)
The preferred power-on sequence is as follows: First VCC, then V+ and V–, and then the potentiometer pins, RH,
RL, and RW. Voltage should not be applied to the potentiometer pins before V+ or V– is applied. The VCC ramp rate
specication should be met, and any glitches or slope changes in the VCC line should be held to <100mV if possi-
ble. If VCC powers down, it should be held below 0.1V for more than 1 second before powering up again in order for
proper wiper register recall. Also, VCC should not reverse polarity by more than 0.5V. Recall of wiper position will
not be complete until VCC, V+ and V– reach their nal value.
Notes: (4) This parameter is periodically sampled and not 100% tested
(5) tPUR and tPUW are the delays required from the time the third (last) power supply (VCC, V+ or V-) is stable until the specic
instruction can be issued. These parameters are periodically sampled and not 100% tested.
(6) This is a tested or guaranteed parameter and should only be used as a guidance.
Symbol
Parameter
Limits
Test Conditions
Min.
Typ.
Max.
Unit
ICC1
VCC supply current
(nonvolatile write)
1mA
fSCL = 400kHz, SDA = Open,
Other Inputs = VSS
ICC2
VCC supply current
(move wiper, write, read)
100
A
fSCL = 400kHz, SDA = Open,
Other Inputs = VSS
ISB
VCC current (standby)
1
A
SCL = SDA = VCC, Addr. = VSS
ILI
Input leakage current
10
A
VIN = VSS to VCC
ILO
Output leakage current
10
A
VOUT = VSS to VCC
VIH
Input HIGH voltage
VCC x 0.7
VCC + 0.5
V
VIL
Input LOW voltage
–0.5
VCC x 0.1
V
VOL
Output LOW voltage
0.4
V
IOL = 3mA
Parameter
Min.
Unit
Minimum endurance
100,000
Data changes per bit per register
Data retention
100
Years
Symbol
Test
Max.
Unit
Test Conditions
CI/O
(4)
Input/output capacitance (SDA)
8
pF
VI/O = 0V
CIN
(4)
Input capacitance (A0, A1, A2, A3, and SCL)
6
pF
VIN = 0V
Symbol
Parameter
Min.
Typ.
Max.
Unit
tPUR
(5)
Power-up to initiation of read operation
1
ms
tPUW
(5)
Power-up to initiation of write operation
5
ms
tRVCC
(6)
VCC Power up ramp rate
0.2
50
V/msec
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