AD9203ARUZRL7

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1. DESCRIPTION

The AD9203ARUZRL7 is a monolithic low power, single supply, 10-bit, 40 MSPS analog-to-digital converter, with an on-chip voltage reference. The AD9203ARUZRL7 uses a multistage differential pipeline architecture and guarantees no missing codes over the full operating temperature range. Its input range may be adjusted between 1 V and 2 V p-p. The AD9203ARUZRL7 has an onboard programmable reference. An external reference can also be chosen to suit the dc accuracy and temperature drift requirements of an application. An external resistor can be used to reduce power consumption when operating at lower sampling rates. This yields power savings for users who do not require the maximum sample rate. This feature is especially useful at sample rates far below 40 MSPS. Excellent performance is still achieved at reduced power. For example, 9.7 ENOB performance may be realized with only 17 mW of power, using a 5 MHz clock. A single clock input is used to control all internal conversion cycles. The digital output data is presented in straight binary or twos complementary output format by using the DFS pin. An out-of-range signal (OTR) indicates an overflow condition that can be used with the most significant bit to determine over- or underrange. The AD9203ARUZRL7 can operate with a supply range from 2.7 V to 3.6V, an attractive option for low power operation in high-speed portable applications. The AD9203ARUZRL7 is specified over industrial (−40°C to +85°C) temperature ranges and is available in a 28-lead TSSOP package.

2. FEATURES

    1. CMOS 10-Bit, 40 MSPS sampling A/D converter

    2. Power dissipation: 74 mW (3 V supply, 40 MSPS)

    3. 17 mW (3 V supply, 5 MSPS)

    4. Operation between 2.7 V and 3.6 V supply

    5. Differential nonlinearity: −0.25 LSB

    6. Power-down (standby) mode, 0.65 mW

    7. ENOB: 9.55 @ fIN = 20 MHz

    8. Out-of-range indicator

    9. Adjustable on-chip voltage reference

  10. IF undersampling up to fIN = 130 MHz

  11. Input range: 1 V to 2 V p-p differential or single-ended

  12. Adjustable power consumption

  13. Internal clamp circuit

3. APPLICATIONS

    1. CCD imaging

    2. Video

    3. Portable instrumentation

    4. IF and baseband communications

    5. Cable modems

    6. Medical ultrasound

4. PRODUCT HIGHLIGHTS

    1. Low Power—The AD9203 consumes 74 mW on a 3 V supply operating at 40 MSPS. In standby mode, power is reduced to 0.65 mW.

    2. High Performance—Maintains better than 9.55 ENOB at 40 MSPS input signal from dc to Nyquist.

    3. Very Small Package—The AD9203 is available in a 28-lead TSSOP.

    4. Programmable Power—The AD9203 power can be further reduced by using an external resistor at lower sample rates.

    5. Built-In Clamp Function—Allows dc restoration of video signals.