FN8199.0 March 11, 2005 PIN DESCRIPTIONS Host Interface Pins Serial Clock (SCL) The SCL input is used to clock data into and out of the X9438. S" />
參數(shù)資料
型號(hào)： X9438WV24
廠(chǎng)商： Intersil
文件頁(yè)數(shù)： 11/18頁(yè)
文件大?。?/td> 0K
描述： IC DUAL DCP + OPAMP 10K 24TSSOP
標(biāo)準(zhǔn)包裝： 75
系列： XDCP™
接片： 64
電阻（歐姆）： 10k
電路數(shù)： 2
溫度系數(shù)： 標(biāo)準(zhǔn)值 ±300 ppm/°C
存儲(chǔ)器類(lèi)型： 非易失
接口： I²C（設(shè)備位址）
電源電壓： 4.5 V ~ 5.5 V
工作溫度： 0°C ~ 70°C
安裝類(lèi)型： 表面貼裝
封裝/外殼： 24-TSSOP（0.173"，4.40mm 寬）
供應(yīng)商設(shè)備封裝： 24-TSSOP
包裝： 管件
產(chǎn)品目錄頁(yè)面： 1238 (CN2011-ZH PDF)
2
FN8199.0
March 11, 2005
PIN DESCRIPTIONS
Host Interface Pins
Serial Clock (SCL)
The SCL input is used to clock data into and out of the
X9438.
Serial Data (SDA)
SDA is a bidirectional pin used to transfer data into
and out of the device. It is an open drain output and
may be wire-ORed with any number of open drain or
open collector outputs. An open drain output requires
the use of a pull-up resistor.
Device Address (A0 - A3)
The address inputs are used to set the least significant
4 bits of the 8-bit slave address. A match in the slave
address serial data stream must be made with the
address input in order to initiate communication with
the X9438. A maximum of 16 devices may share the
same 2-wire serial bus.
Potentiometer Pins(1)
RH (RH0 - RH1), RL (RL0 - RL1)
The RH and RL inputs are equivalent to the terminal con-
nections on either end of a mechanical potentiometer.
RW (RW0 - RW1)
The wiper output is equivalent to the wiper output of a
mechanical potentiometer.
Amplifier and Device Pins
Amplifier Input Voltage VNI(0,1) and VINV(0,1)
VNI and VINV are inputs to the noninverting (+) and
inverting (-) inputs of the operational amplifiers.
Amplifier Output Voltage VOUT(0,1)
VOUT is the voltage output pin of the operational
amplifier.
Hardware Write Protect Input WP
The WP pin, when low, prevents non-volatile writes to
the wiper counter registers.
Note:
(1) Alternate designations for RH, RL, RW are VH, VL, VW
Analog Supplies V+, V-
The analog supplies V+, V- are the supply voltages for
the XDCP analog section and the operational amplifiers.
System Supply VCC and Ground VSS.
The system supply VCC and its reference VSS is used
to bias the interface and control circuits.
PIN CONFIGURATION
PIN NAMES
Symbol
Description
SCL
Serial Clock
SDA
Serial Data
A0 - A3
Device Address
RH0 - RH1,
RL0 - RL1
Potentiometers (terminal equivalent)
RW0 - RW1
Potentiometers (wiper equivalent)
VNI(0,1),
VINV(0,1)
Amplifier Input Voltages
VOUT0, VOUT1
Amplifier Outputs
WP
Hardware Write Protection
V+,V-
Analog and Voltage Amplifier Supplies
VCC
System/Digital Supply Voltage
VSS
System Ground
NC
No Connection
VCC
RL0
RH0
WP
SDA
A1
1
2
3
4
5
6
7
8
9
10
24
23
22
21
20
19
18
17
16
15
V+
VOUT0
VNI0
VINV0
A0
NC
A3
SCL
VINV1
VNI1
SOIC
X9438
VSS
RW0
14
13
11
12
A2
RL1
RH1
RW1
VOUT1
V-
VINV0
VNI0
A3
NC
SCL
1
2
3
4
5
6
7
8
9
10
24
23
22
21
20
19
18
17
16
15
WR
A2
VCC
RW0
TSSOP
X9438
V+
VOUT0
14
13
11
12
A0
VOUT1
VNI1
VINV1
RL0
RH0
VSS
RW1
RH1
RL1
A1
SDA
X9438
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