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| 型号： | TPL8002-25PWR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 数字电位计 |
| 英文描述： | DIGITAL POTENTIOMETER, PDSO16 |
| 封装： | GREEN, PLASTIC, TSSOP-16 |
| 文件页数： | 1/13页 |
| 文件大小： | 365K |
| 代理商： | TPL8002-25PWR |
1
GND
2
A
3
B
4
C
5
D
6
E
7
F
RG1
PW PACKAGE
(TOP VIEW)
RF1
RSW1
V
DD
V
EE
RSW2
RF2
RG2
8
16
15
14
13
12
11
10
9
GND
www.ti.com
SLIS133 – NOVEMBER 2009
TANDEM 64-TAP DIGITAL POTENTIOMETER
Check for Samples: TPL8002-25
1
FEATURES
APPLICATIONS
Tandem Adjustable Feedback and Gain
Adjustable Gain From 23.25 dB to –24 dB
Resistors for Operational Amplifers
64-Tap Positions With 0.75 dB Per Step
Supports 8-MHz Analog Bandwidth
Operating Range up to –4-V VEE/+4-V VDD
100-
μA Maximum Static Supply Current
±30% End-to-End Resistance Tolerance
Absolute Tolerance of ±0.3 dB
Operating Temperature Range From
–40°C to 85°C
ESD Performance Tested Per JESD 22
–
2000-V Human-Body Model
(A114-B,Class II)
DESCRIPTION/ORDERING INFORMATION
The TPL8002-25 is a programmable resistor device implementing two digital potentiometers with 64 wiper
positions each that are tandem controlled through a 6-bit parallel interface. The device has fixed wiper
resistances at the respective wiper contacts that tap the potentiometer resistors at a point determined by the
binary code present at its digital inputs.
The resistive wiper tap terminals, RSW, of the TPL8002-25 are typically connected to the inverting inputs (–) of
an external differential path inverting operational amplifier configuration, with the non-inverting inputs (+)
connected through to ground. The application's differential input to the configuration is the device's RG terminals.
The differential output of the external operational amplifiers is connected to the device's RF terminals, and thus
becomes the differential output of the application configuration.
The resistance between the wiper contacts and the end points RG and RF of the TPL8002-25 provides a
logarithmic gain/attenuation response of the configuration. With a digital code of decimal 0 (b000000) the
configuration has an inverting maximum attenuation of –24 dB. With a digital code of decimal 32 (b100000) the
configuration has inverting unity gain of 0.00 dB. With a digital code of decimal 63 (b111111) the configuration
has an inverting maximum gain of +23.25 dB. The response of the configuration with respect to the digital code
varies in fixed steps of 0.75 dB.
ORDERING INFORMATION
TA
PACKAGE(1) (2)
ORDERABLE PART NUMBER TOP-SIDE MARKING
–40°C to 85°C
TSSOP – PW
Tape and reel
TPL8002-25PWR
PHY03A
(1)
Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
(2)
For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
website at www.ti.com.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright 2009, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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