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THAT IC

THAT 6261/6263/6266

发布时间 : 2018-06-27 浏览次数 : 376
  • Features / Applications / Description
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    FEATURES

    • Low noise: -127 dBu EIN (max gain)
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    • -8 dB to +34 dB gain
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    • Choice of step size: 1, 3, or 6 dB
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    • +16.5 dBu maximum input (min gain) 
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    • Integrated ADC driver with reference input
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    • High common-mode rejection: > 65dB
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    • Very low power: 30 mW per channel
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    • Unipolar or Bipolar power supplies Analog: +10V +5V or ±5V; Digital: +3.3V 
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    • Small form factor: 7x7mm QFN package
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    • Zero crossing detectors minimize zipper noise

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    • Daisy-chainable SPI control interface
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    • Individually controlled Standby and Mute 
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    Datasheet
    Download

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    626x Datasheet (1.6 MB)
    2-Channel Low-Noise
    Programmable-Gain
    Preamplifier - ADC Driver
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    Demo Board Datasheet & Software Download
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    626x-DEMO Datasheet
    (1.9 MB)
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    626x-DEMO Software 
    (23 kB ZIP file)
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    THAT 5263 Block Diagram

    DESCRIPTION

    The THAT 626x is a family of two-channel “all-in-one” digitally controlled preamplifiers with integrated ADC drivers. Gain is programmable from -8 to +34 dB. The low-power (60 mW) devices can be powered from unipolar (+10 V and +5 V) or bipolar (±5 V) supplies. The 626x family includes three products distinguished primarily by step size:

    Part 6261 6263 6266
    Step size 1 dB 3 dB 6 dB

    All three parts offer excellent noise performance: at maximum gain: the 6261 EIN is -127 dBu; the 6263 and 6266 are -126 dBu. Dynamic range at minimum gain is up to 118.7 dB.

    Their outputs interface directly to commonly used 5 V ADC ICs with 2Vrms differential full-scale inputs. Accordingly, these parts serve as a complete solution to connect an audio input to an A/D converter.

    To minimize audibility of gain changes with signal, all 626x family members can be programmed to synchronize gain changes with signal zero crossings. To enable seamless external gain changes, a BUSY pin for each channel allows external events to be synchro-nized with zero crossings.

    The parts are controlled via a 4-wire SPI interface running at up to 7.5 MHz (+3.3V supply). Multiple devices may be daisy-chained using one chip select.

    Four general purpose logic outputs (GPOs) are available to control external circuitry (e.g., pad, phan-tom power). The GPOs may be synchronized with zero-crossings. Each channel may be set to low-power standby mode, and can be muted by about 62 dB.

    The 626x comes in a 7X7 mm 48-pin QFN pack-age. They are truly all-in-one mic preamps – from XLR to ADC.
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    APPLICATIONS
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    • Digitally controlled input stages
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         Microphone preamplifiers
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         Instrumentation amplifiers
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         Differential amplifiers 
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    • Audio Mixing Consoles
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    • PC audio interfaces
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    • Digital video cameras
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    • Digital audio snakes
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    • Portable audio recorders
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    • Programmable gain amplifiers
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    Key Specifications (see 626x datasheet for complete specifications)
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    Conditions
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    6261
    Typical
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    6263
    Typical
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    6266
    Typical
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    Units
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    fillerGain Range Step Size
    1
    3
    6
    dB
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    Referenced to AGND
    ±5
    ±5
    ±5
    V
    fillerDigital Supply Voltage
    Referenced to DGND
    3.3
    3.3
    3.3
    V
    fillerAnalog Supply Current 
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    No signal
    3
    3
    3
    mA
    fillerDigital Supply Current 
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    No signal

    5
    5
    0.25
    µA
    fillerMax Differential Input Level

    -8 dB Gain THD: 0.15% @1kHz

    16.5
    16.5
    16.5
    dBu
    fillerMax Gain Range Error

    Gain:[-8dB ~30dB]
    Gain:[31dB ~ 34dB]

    ±0.2
    ±0.3

    ±0.2
    ±0.3
    ±0.2
    ±0.3
    dB
  • Model Package Order Number Pricing
    (1000)
    Min Order
    Quantity
    Reference
    6261 48 pin QFN 6261N48-U $ 5.98 46 Request
    Samples
    48 pin QFN
    Tape & Reel
    6261N48-UR Contact us 4000
    6263 48 pin QFN 6263N48-U $ 5.07 46
    48 pin QFN
    Tape & Reel
    6263N48-UR Contact us 4000
    6266 48 pin QFN 6266N48-U $ 4.56 46
    48 pin QFN
    Tape & Reel
    6266N48-UR Contact us 4000
    626x
    Demo Board
    626x-DEMO $700.00 1
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    All 626x parts are RoHS compliant.
    Minimum order quantity (MOQ) is one tube or one reel. Parts must be ordered in multiples of the MOQ.
    Samples are available to qualified applicants.
    Pricing is subject to change.

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  • Design Note 140   Input and Output Circuits for THAT Preamplifier ICs (244k)

  • Digitally Controlled Microphone Preamplifier Selector

    A side by side comparison of the features and specifications of our digitally controlled microphone preamplifier chip sets.


    626x-DEMO Programmable-Gain Preamplifier Demo Board - The 626x-DEMO board (US$250) allows developers to evaluate the performance of the THAT626x IC. The demo board provides a balanced audio input on a Neutrik "combo" connector with 48V phantom power, and a balanced audio output on XLR and ¼" TRS connectors. The supplied graphical user interface (GUI) controls all functions in the 626x chip via USB. A prototyping area is available for adding or modifying circuitry. See the 626x-DEMO Datasheet for more information.


    626x Surface Mount Adapter Board - For our integrated circuits which are only available in surface mount packages THAT Corporation offers adapter boards which allow one of these surface-mount ICs to interface to a circuit board via traditional thru-hole mounting. These adapters make it easy for a design engineer to evaluate our surface-mount products on a prototype board without having to employ SMT technology. Adapter boards are available to qualified applicants.


    626x Material Data Declaration Sheet

    Material Data Declaration Sheets (MDDS) disclose the hazardous materials in our integrated circuits as required by the European RoHS directive.

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