Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Custom audio Car stereo, Musical instruments, Professional audio SPI DIP 16

SBOS218A − DECEMBER 2001 − REVISED JUNE 200

   



FEATURES

DIGITALLY-CONTROLLED ANALOG VOLUME

CONTROL

Two Independent Audio Channels

Serial Control Interface

Zero Crossing Detection

Mute Function

D WIDE GAIN AND ATTENUATION RANGE

+31.5dB to −95.5dB with 0.5dB Steps

D LOW NOISE AND DISTORTION

120dB Dynamic Range

0.0004% THD+N at 1kHz (U-Grade)

0.0002% THD+N at 1kHz (A-Grade)

D NOISE-FREE LEVEL TRANSITIONS

D LOW INTERCHANNEL CROSSTALK

−130dBFS

D POWER SUPPLIES: ±5V Analog, +5V Digital

D AVAILABLE IN DIP-16 AND SOL-16

PACKAGES

D PIN AND SOFTWARE COMPATIBLE WITH THE

CRYSTAL CS3310

APPLICATIONS

AUDIO AMPLIFIERS

D MIXING CONSOLES

D MULTI-TRACK RECORDERS

D BROADCAST STUDIO EQUIPMENT

D MUSICAL INSTRUMENTS

D EFFECTS PROCESSORS

D A/V RECEIVERS

D CAR AUDIO SYSTEMS

DESCRIPTION

The PGA2311 is a high−performance, stereo audio

volume control designed for professional and high-end

consumer audio systems. Using high performance

operational amplifier stages internal to the PGA2311

yields low noise and distortion, while providing the

capability to drive 600Ω loads directly without buffering.

The 3-wire serial control interface allows for connection

to a wide variety of host controllers, in addition to

support for daisy-chaining of multiple PGA2311

devices.

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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.

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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.

Summary of content (17 pages)

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SBOS218A − DECEMBER 2001 − REVISED JUNE 2002 FEATURES APPLICATIONS D AUDIO AMPLIFIERS D MIXING CONSOLES D MULTI-TRACK RECORDERS D BROADCAST STUDIO EQUIPMENT D MUSICAL INSTRUMENTS D EFFECTS PROCESSORS D A/V RECEIVERS D CAR AUDIO SYSTEMS D DIGITALLY-CONTROLLED ANALOG VOLUME CONTROL Two Independent Audio Channels Serial Control Interface Zero Crossing Detection Mute Function D WIDE GAIN AND ATTENUATION RANGE +31.5dB to −95.5dB with 0.
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www.ti.com SBOS218A − DECEMBER 2001 − REVISED JUNE 2002 ABSOLUTE MAXIMUM RATINGS(1) Supply Voltage, VA+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5.5V VA− . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −5.5V VD+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5.5V VA+ to VD+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . < ± 0.3V Analog Input Voltage . . . . . . . . . . . . . . . . . . . . . .
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www.ti.com SBOS218A − DECEMBER 2001 − REVISED JUNE 2002 ELECTRICAL CHARACTERISTICS (Cont.) At TA = +25°C, VA+ = +5V, VA− = −5V, VD+ = +5V, RL = 100kΩ, CL = 20pF, BW measure = 10Hz to 20kHz, unless otherwise noted. PGA2311P, U (U−Grade) PARAMETER CONDITIONS MIN TYP PGA2311PA, UA (A−Grade) MAX MIN VD+ 0.8 +2.0 TYP MAX UNITS DIGITAL CHARACTERISTICS High−Level Input Voltage, VIH +2.0 Low−Level Input Voltage, VIL −0.
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www.ti.com SBOS218A − DECEMBER 2001 − REVISED JUNE 2002 TYPICAL CHARACTERISTICS At TA = +25°C, VA+ = +5V, VA− = −5V, VD+ = +5V, RL = 100kΩ, CL = 20pF, BW measure = 10Hz to 20kHz, unless otherwise noted. (NOTE: All plots taken with PGA2311 A−Grade.
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www.ti.com SBOS218A − DECEMBER 2001 − REVISED JUNE 2002 TYPICAL CHARACTERISTICS (CONT.) At TA = +25°C, VA+ = +5V, VA− = −5V, VD+ = +5V, RL = 100kΩ, CL = 20pF, BW measure = 10Hz to 20kHz, unless otherwise noted. (NOTE: All plots taken with PGA2311 A−Grade.
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www.ti.com SBOS218A − DECEMBER 2001 − REVISED JUNE 2002 GENERAL DESCRIPTION The PGA2311 is a stereo audio volume control. It may be used in a wide array of professional and consumer audio equipment. The PGA2311 is fabricated in a sub− micron CMOS process. The heart of the PGA2311 is a resistor network, an analog switch array, and a high−performance op amp stage. The switches are used to select taps in the resistor network that, in turn, determine the gain of the amplifier stage.
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www.ti.com SBOS218A − DECEMBER 2001 − REVISED JUNE 2002 SERIAL CONTROL PORT The serial control port is utilized to program the gain settings for the PGA2311. The serial control port includes three input pins and one output pin. The inputs include CS (pin 2), SDI (pin 3), and SCLK (pin 6). The sole output pin is SDO (pin 7). The CS pin functions as the chip select input. Data may be written to the PGA2311 only when CS is LOW. SDI is the serial data input pin.
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www.ti.com SBOS218A − DECEMBER 2001 − REVISED JUNE 2002 GAIN SETTINGS For N = 1 to 255: The gain for each channel is set by its corresponding 8−bit code, either R[7:0] or L[7:0] (see Figure 2). The gain code data is straight binary format. If we let N equal the decimal equivalent of R[7:0] or L[7:0], then the following relationships exist for the gain settings: For N = 0: Mute Condition. The input multiplexer is connected to analog ground (AGNDR or AGNDL). Gain (dB) = 31.5 − [0.
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www.ti.com SBOS218A − DECEMBER 2001 − REVISED JUNE 2002 DAISY-CHAINING MULTIPLE PGA2311 DEVICES ZERO CROSSING DETECTION In order to reduce the number of control signals required to support multiple PGA2311 devices on a printed circuit board, the serial control port supports daisy-chaining of multiple PGA2311 devices. Figure 4 shows the connection requirements for daisy-chain operation. This arrangement allows a 3-wire serial interface to control many PGA2311 devices.
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www.ti.com SBOS218A − DECEMBER 2001 − REVISED JUNE 2002 MUTE FUNCTION Muting can be achieved by either hardware or software control. Hardware muting is accomplished via the MUTE input, and software muting by loading all zeroes into the volume control register. MUTE disconnects the internal buffer amplifiers from the output pins and terminates AOUTL and AOUTR with 10kΩ resistors to ground.
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www.ti.com SBOS218A − DECEMBER 2001 − REVISED JUNE 2002 PRINTED CIRCUIT BOARD (PCB) LAYOUT GUIDELINES It is recommended that the ground planes for the digital and analog sections of the PCB be separate from one another. The planes should be connected at a single point. Figure 6 shows the recommended PCB floor plan for the PGA2311. Figure 6. Typical PCB Layout Floor Plan. 12 The PGA2311 is mounted so that it straddles the split between the digital and analog ground planes.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 11-Apr-2013 Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
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PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant PGA2311U/1K SOIC DW 16 1000 330.0 16.4 10.75 10.7 2.7 12.0 16.0 Q1 PGA2311UA/1K SOIC DW 16 1000 330.0 16.4 10.75 10.7 2.7 12.0 16.
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PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) PGA2311U/1K SOIC DW 16 1000 367.0 367.0 38.0 PGA2311UA/1K SOIC DW 16 1000 367.0 367.0 38.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.