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    參數(shù)資料
    型號： TSC2046IRGVR
    廠商： TEXAS INSTRUMENTS INC
    元件分類： 消費家電
    英文描述： SPECIALTY CONSUMER CIRCUIT, PQCC16
    封裝： 4 X 4 MM, 1MM HEIGHT, GREEN, PLASTIC, QFN-16
    文件頁數(shù)： 33/33頁
    文件大?。?/td> 774K
    代理商： TSC2046IRGVR
    TSC2046
    SBAS265G OCTOBER 2002 REVISED JANUARY 2008
    www.ti.com
    9
    TYPICAL CHARACTERISTICS (continued)
    At TA = +25°C, +VCC = +2.7V, IOVDD = +1.8V, VREF = External +2.5V, 12-bit mode, PD0 = 0, fSAMPLE = 125kHz, and fCLK = 16 fSAMPLE = 2MHz,
    unless otherwise noted.
    TEMP1 DIODE VOLTAGE vs +V
    CC
    2.7
    3.0
    3.3
    +V
    CC (V)
    T
    E
    MP
    1
    D
    iode
    V
    o
    lt
    age
    (m
    V
    )
    720
    718
    716
    714
    712
    710
    THEORY OF OPERATION
    The TSC2046 is a classic successive approximation
    register (SAR) analog-to-digital converter (ADC). The
    architecture is based on capacitive redistribution, which
    inherently includes a sample-and-hold function. The
    converter is fabricated on a 0.6
    m CMOS process.
    The basic operation of the TSC2046 is shown in Figure 1.
    The device features an internal 2.5V reference and uses
    an external clock. Operation is maintained from a single
    supply of 2.7V to 5.25V. The internal reference can be
    overdriven with an external, low-impedance source
    between 1V and +VCC. The value of the reference voltage
    directly sets the input range of the converter.
    The analog input (X-, Y-, and Z-Position coordinates,
    auxiliary input, battery voltage, and chip temperature)
    to the converter is provided via a multiplexer. A unique
    configuration of low on-resistance touch panel driver
    switches allows an unselected ADC input channel to
    provide power and the accompanying pin to provide
    ground for an external device, such as a touch screen.
    By maintaining a differential input to the converter and
    a differential reference architecture, it is possible to
    negate the error from each touch panel driver switch
    on-resistance (if this is a source of error for the
    particular measurement).
    +V
    CC
    +V
    CC
    X+
    Y+
    X
    Y
    V
    BAT
    AUX
    B1
    C1
    D1
    E1
    G2
    G3
    G6
    E7
    G4
    G5
    A2
    A3
    A4
    A5
    A6
    B7
    C7
    D7
    DCLK
    CS
    DIN
    BUSY
    DOUT
    PENIRQ
    IOVDD
    V
    REF
    Serial/Conversion Clock
    Chip Select
    Serial Data In
    Converter Status
    Serial Data Out
    +
    1
    ∝F
    to
    10
    ∝F
    (Optional)
    +2.7V to +5V
    TSC2046
    Auxiliary Input
    To Battery
    Voltage
    Regulator
    Touch
    Screen
    0.1
    ∝F
    Pen Interrupt
    GND
    NOTE: VFBGA package and pin names shown.
    Figure 1. Basic Operation of the TSC2046
    相關(guān)PDF資料
    PDF描述
    TSC2046IRGVT SPECIALTY CONSUMER CIRCUIT, PQCC16
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    相關(guān)代理商/技術(shù)參數(shù)
    參數(shù)描述
    TSC2046IRGVRG4 功能描述:觸摸屏轉(zhuǎn)換器和控制器 4-Wire w/low voltage digital I/O RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數(shù)據(jù)速率:140 SPS 分辨率:10 bit 接口類型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 電源電壓:2.5 V to 5.25 V 電源電流:17 mA 工作溫度:- 40 C to + 85 C 封裝 / 箱體:SSOP-20
    TSC2046IRGVT 功能描述:觸摸屏轉(zhuǎn)換器和控制器 4-Wire w/low voltage digital I/O RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數(shù)據(jù)速率:140 SPS 分辨率:10 bit 接口類型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 電源電壓:2.5 V to 5.25 V 電源電流:17 mA 工作溫度:- 40 C to + 85 C 封裝 / 箱體:SSOP-20
    TSC2046IRGVTG4 功能描述:觸摸屏轉(zhuǎn)換器和控制器 4-Wire w/low voltage digital I/O RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數(shù)據(jù)速率:140 SPS 分辨率:10 bit 接口類型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 電源電壓:2.5 V to 5.25 V 電源電流:17 mA 工作溫度:- 40 C to + 85 C 封裝 / 箱體:SSOP-20
    TSC2046IZQCR 功能描述:觸摸屏轉(zhuǎn)換器和控制器 4-Wire w/low voltage digital I/O RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數(shù)據(jù)速率:140 SPS 分辨率:10 bit 接口類型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 電源電壓:2.5 V to 5.25 V 電源電流:17 mA 工作溫度:- 40 C to + 85 C 封裝 / 箱體:SSOP-20
    TSC2046IZQCR-90 功能描述:觸摸屏轉(zhuǎn)換器和控制器 4-Wire w/low voltage digital I/O RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數(shù)據(jù)速率:140 SPS 分辨率:10 bit 接口類型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 電源電壓:2.5 V to 5.25 V 電源電流:17 mA 工作溫度:- 40 C to + 85 C 封裝 / 箱體:SSOP-20
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