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ADCDS-1405 Datasheet(PDF) 1 Page - Murata Power Solutions Inc. |
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ADCDS-1405 Datasheet(HTML) 1 Page - Murata Power Solutions Inc. |
1 / 9 page FEATURES n 14-bit resolution n 5MPPS throughput rate (14-bits) n Extended temperature range -55°C to +100°C n 1 LSB RMS Noise n Excellent Signal-to-Noise ratio n Edge triggered n Small, 40-pin, TDIP package n Low power, 700mW typical n Low cost, functionally complete n Programmable Analog Bandwidth 4 3 2 26 INVERTING INPUT DIRECT INPUT OFFSET ADJUST REFERENCE HOLD 27 32, 33 7, 35, 37 DATA VALID DIGITAL GROUND ANALOG GROUND 25 23 10 24 6 START CONVERT BIT 1 (MSB) BIT 14 (LSB) OUT-OF-RANGE +2.4V REFERENCE OUTPUT +12VA –5VA +5VA +5VD 39 38 36 34 TIMING AND CONTROL SAMPLING A/D NON-INVERTING INPUT 75 � 523 � 0.01µF 5K � 1 FINE GAIN ADJUST 5 INPUT AMPLIFIER 30 31 A1 CORRELATED DOUBLE SAMPLER AØ Figure 1. ADCDS-1405 Functional Block Diagram INPUT/OUTPUT CONNECTIONS Pin Function Pin Function 1 Fine Gain Adjust 40 No Connect 2 Offset Adjust 39 +12v 3 Direct Input 38 –5va 4 Inverting Input 37 Analog Ground 5 Non-Inverting Input 36 +5va 6 +2.4v Ref. Output 35 Analog Ground 7 Analog Ground 34 +5vd 8 No Connect 33 Digital Ground 9 No Connect 32 Digital Ground 10 Bit 14 (Lsb) 31 A1 11 Bit 13 30 AO 12 Bit 12 29 No Connect 13 Bit 11 28 No Connect 14 Bit 10 27 Data Valid 15 Bit 9 26 Reference Hold 16 Bit 8 25 Start Convert 17 Bit 7 24 Out-Of-Range 18 Bit 6 23 Bit 1 (Msb) 19 Bit 5 22 Bit 2 20 Bit 4 21 Bit 3 The ADCDS-1405 is an application-specific video signal processor designed for electronic-imaging applications that employ CCD's (charge coupled devices) as their photodetector. The ADCDS-1405 incorporates a "user configurable" input amplifier, a CDS (correlated double sampler) and a sampling A/D converter in a single package, providing the user with a complete, high performance, low-cost, low-power, integrated solution. The key to the ADCDS-1405's performance is a unique, high-speed, high-accuracy CDS circuit, which eliminates the effects of residual charge, charge injection and "kT/C" noise on the CCD's output floating capacitor, producing a "valid video" output signal. The ADCDS-1405 digitizes this resultant "valid video" signal using a high-speed, low-noise sampling A/D converter. The ADCDS-1405 requires only the rising edge of start convert pulse to initiate its con- version process. Additional features of the ADCDS-1405 include gain adjust, offset adjust, precision +2.4V reference, and a programmable analog bandwidth function. PRODUCT OVERVIEW Typical unit ADCDS-1405 14-Bit, 5 Megapixels/Second, CCD Signal Processor For full details go to www.murata-ps.com/rohs www.murata-ps.com Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000 SIMPLIFIED SCHEMATIC MDC_ADCDS-1405.B02 Page 1 of 9 |
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