Datasheet AD9203W (Analog Devices)

10-Bit, 40 MSPS, 3 V, 74 mW Analog-to-Digital Converter Automotive Product AD9203W FEATURES FUNCTIONAL BLOCK DIAGRAM CMOS 10-bit, 40 MSPS sampling analog-to-digital converter CLK AVDD DRVDD Power dissipation: 74 mW (3 V supply, 40 MSPS) CLAMP AD9203W STBY 17 mW (3 V supply, 5 MSPS) CLAMPIN AINP Operation between 2.7 V and 3.6 V supply A/D AINN Differential nonlinearity: −0.25 LSB SHA GAIN SHA GAIN 3-STATE A/D D/A A/D D/A Power-down (standby) mode: 0.65 mW ENOB: 9.55 at f REFTF IN = 20 MHz CORRECTION LOGIC REFBF Out-of-range indicator Adjustable on-chip voltage reference BANDGAP OUTPUT BUFFERS OTR REFERENCE VREF IF undersampling up to f 10 D9 (MSB) IN = 130 MHz + REFSENSE Input range: 1 V to 2 V p-p differential or single-ended – D0 (LSB) 0.5V
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Adjustable power consumption
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AVSS PWRCON DFS DRVSS Internal clamp circuit
10 Figure 1.
Qualified for automotive applications APPLICATIONS Automotive GENERAL DESCRIPTION
The AD9203W is a monolithic low power, single supply, 10-bit, can be used with the most significant bit to determine over- or 40 MSPS analog-to-digital converter, with an on-chip voltage underrange. reference. The AD9203W uses a multistage differential pipeline The AD9203W can operate with a supply range from 2.7 V to architecture and guarantees no missing codes over the full 3.6 V, an attractive option for low power operation in high operating temperature range. Its input range may be adjusted speed portable applications. between 1 V and 2 V p-p. The AD9203W is specified over industrial (−40°C to +85°C) The AD9203W has an onboard programmable reference. An temperature ranges and is available in a 28-lead TSSOP package. external reference can also be chosen to suit the dc accuracy and temperature drift requirements of an application.
PRODUCT HIGHLIGHTS
An external resistor can be used to reduce power consumption 1. Low Power. The AD9203W consumes 74 mW on a 3 V when operating at lower sampling rates. This yields power supply operating at 40 MSPS. In standby mode, power is savings for users who do not require the maximum sample reduced to 0.65 mW. rate. This feature is especially useful at sample rates far below 2. High Performance. Maintains better than 9.55 ENOB at 40 MSPS. Excellent performance is still achieved at reduced 40 MSPS input signal from dc to Nyquist. power. For example, 9.7 ENOB performance may be realized 3. Very Small Package. The AD9203W is available in a with only 17 mW of power, using a 5 MHz clock. 28-lead TSSOP. 4. Programmable Power. The AD9203W power can be A single clock input is used to control all internal conversion further reduced by using an external resistor at lower cycles. The digital output data is presented in straight binary or sample rates. twos complementary output format by using the DFS pin. An 5. Built-In Clamp Function. Allows dc restoration of video out-of-range signal (OTR) indicates an overflow condition that signals.
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Document Outline FEATURES FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION PRODUCT HIGHLIGHTS SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL CHARACTERISTICS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS OUTLINE DIMENSIONS ORDERING GUIDE