TSA7887 A Micropower, 2-channel, 125-ksps, Serial-Output 12-bit SAR ADC FEATURES DESCRIPTION Alternate Source for AD7887 The TSA7887 an alternate source for the AD7887 - Single-supply Operation: +2.7V to +5.25V is a self-contained, 2-channel, high-speed, INL: 1LSB - TSA7887B micropower, 12-bit analog-to-digital converter (ADC) 2LSBs - TSA7887A that operates from a single +2.7V to +5.25V power One or Two Single-ended Analog Inputs supply. The TSA7887 is capable of a 125-ksps Internal Wide-bandwidth Track-and-Hold throughput rate with an external 2MHz serial clock Internal +2.5-V Reference and draws 0.85mA supply current. Flexible Power/Throughput-Rate Management The wideband input track-and-hold acquires signals 0.85mA at 125ksps (Internal VREF ON) in 500ns and features a single-ended sampling 0.7mA at 125ksps (Internal VREF OFF) topology. Output data coding is straight binary and Shutdown-mode Supply Current: 1 A (max) the ADC is capable of converting full power signals SPI/QSPI/MICROWIRE/DSP-Compatible up to 2.5 MHz. The ADC also contains an integrated 1 Serial Interfaces 2.5V reference or the VREF pin can be overdriven by Operating Temperature Range: an external reference. -40C to +125C The TSA7887s provides one or two analog inputs 8-pin SOIC and MSOP Packaging . In each with an analog input range from 0 to VREF two-channel operation, the analog input range is 0V APPLICATIONS to VDD. Efficient circuit design ensures low power Instrumentation and Control Systems consumption of 2mW (typical) for normal operation High-Speed Modems and 3 W in power-down operation. Battery-powered systems: The TSA7887 is fully specified from -40C to +125C Personal Digital Assistants, Medical and is available in 8-pin SOIC and MSOP packages. Instruments, Mobile Communications FUNCTIONAL BLOCK DIAGRAM 1 SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corporation Page 1 2014 Silicon Laboratories, Inc. All rights reserved. TSA7887 ABSOLUTE MAXIMUM RATINGS V to AGND ................................................................ 0.3V to +7V SOIC/MSOP Package Power Dissipation ............................. 450mW DD Analog Input Voltage (AIN0, AIN1) to AGND .... 0.3V to V + 0.3V Thermal Impedance ..................................... 157C/W (SOIC) DD JA Digital Input Voltage to AGND........................... 0.3V to V + 0.3V 205.9C/W (MSOP) DD Digital Output Voltage to AGND ........................ 0.3V to V + 0.3V Thermal Impedance ....................................... 56C/W (SOIC) DD JC REFIN/REFOUT to AGND ................................ 0.3V to V + 0.3V 43.74C/W (MSOP) DD 1 Input Current to Any Pin Except Supplies ............................. 10mA Lead Temperature, Soldering Operating Temperature Range Vapor Phase (60 sec) ........................................................ 215C A, B Versions ..................................................... 40C to +125C Infrared (15 sec) ................................................................ 220C Storage Temperature Range ................................. 65C to +150C Pb-Free Temperature, Soldering Reflow ............................. 260(0)C Junction Temperature ........................................................... +150C ESD ............................................................................................. 4kV Electrical and thermal stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other condition beyond those indicated in the operational sections of the specifications is not implied. Exposure to any absolute maximum rating conditions for extended periods may affect device reliability and lifetime. PACKAGE/ORDERING INFORMATION ORDER NUMBER PART MARKING CARRIER QUANTITY TSA7887ARZ TUBE 97 TS7887A TSA7887ARZ-REEL Tape & Reel 2500 TSA7887BRZ TUBE 97 TS7887B TSA7887BRZ-REEL Tape & Reel 2500 ORDER NUMBER PART MARKING CARRIER QUANTITY TSA7887ARMZ TUBE 50 TAAV TSA7887ARMZ-REEL Tape & Reel 2500 Lead-free Program: Silicon Labs supplies only lead-free packaging. Consult Silicon Labs for products specified with wider operating temperature ranges. Page 2 TSA7887 Rev. 1.0