MAX1169 19-2654 Rev 2 12/10 58.6ksps, 16-Bit, 2-Wire Serial ADC in a 14-Pin TSSOP General Description Features 2 The MAX1169 is a low-power, 16-bit successive- High-Speed I C-Compatible Serial Interface approximation analog-to-digital converter (ADC). The 400kHz Fast Mode device features automatic power-down, an on-chip 1.7MHz High-Speed Mode 4MHz clock, a +4.096V internal reference, and an +4.75V to +5.25V Single Supply 2 I C-compatible 2-wire serial interface capable of both +2.7V to +5.5V Adjustable Logic Level fast and high-speed modes. The MAX1169 operates from a single supply and con- Internal +4.096V Reference sumes 5mW at the maximum conversion rate of External Reference: 1V to V AV DD 58.6ksps. AutoShutdown powers down the device Internal 4MHz Conversion Clock between conversions, reducing supply current to less than 50A at a 1ksps throughput rate. The option of a 58.6ksps Sampling Rate separate digital supply voltage allows direct interfacing AutoShutdown Between Conversions with +2.7V to +5.5V digital logic. Low Power The MAX1169 performs a unipolar conversion on its 5.0mW at 58.6ksps single analog input using its internal 4MHz clock. The 4.2mW at 50ksps full-scale analog input range is determined by the inter- 2.0mW at 10ksps nal reference or by an externally applied reference volt- 0.23mW at 1ksps age ranging from 1V to V . AVDD 3W in Shutdown The four address select inputs (ADD0 to ADD3) allow Small 14-Pin TSSOP Package up to 16 MAX1169 devices on the same bus. The MAX1169 is packaged in a 14-pin TSSOP and operates over an extended temperature range. Refer to Ordering Information the MAX1069 data sheet for a 14-bit device in a pin- compatible package. PIN- INL PART TEMP RANGE PACKAGE (LSB) Applications MAX1169BEUD+ -40C to +85C 14 TSSOP 2 +Denotes a lead(Pb)-free/RoHS-compliant package. Hand-Held Portable Applications Medical Instruments Pin Configuration Battery-Powered Test Equipment Solar-Powered Remote Systems TOP VIEW DGND 1 14 ADD3 Received-Signal-Strength Indicators SCL 2 13 REF System Supervision SDA 3 12 REFADJ ADD2 4 11 AGNDS MAX1169 ADD1 5 10 AIN ADD0 6 9 AGND DVDD 7 8 AVDD TSSOP AutoShutdown is a trademark of Maxim Integrated Products, Inc. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com. EVALUATION KIT AVAILABLE58.6ksps, 16-Bit, 2-Wire Serial ADC in a 14-Pin TSSOP ABSOLUTE MAXIMUM RATINGS AVDD to AGND.........................................................-0.3V to +6V Continuous Power Dissipation (T = +85C) A DVDD to DGND ........................................................-0.3V to +6V 14-Pin TSSOP (derate 9.1mW/C above +85C) .........864mW AGND to DGND.....................................................-0.3V to +0.3V Operating Temperature Ranges AGNDS to AGND...................................................-0.3V to +0.3V MAX1169 EUD ................................................-40C to +85C AIN, REF, REFADJ to AGND ..................-0.3V to (V + 0.3V) Storage Temperature Range .............................-65C to +150C AVDD SCL, SDA, ADD to DGND.......................................-0.3V to +6V Junction Temperature......................................................+150C Maximum Current into Any Pin............................................50mA Lead Temperature (soldering, 10s) .................................+300C Soldering Temperature (reflow) .......................................+260C 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 conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (V = +4.75V to +5.25V, V = +2.7V to +5.5V, f = 1.7MHz (33% duty cycle), f = 58.6ksps, V = +4.096V, external AV DV DD DD SCL SAMPLE REF reference applied to REF, REFADJ = AVDD, C = 10F, T = T to T , unless otherwise noted. Typical values are at T = +25C.) REF A MIN MAX A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DC ACCURACY (Note 1) Resolution 16 Bits Relative Accuracy (Note 2) INL MAX1169B 2 LSB 16-bit Differential Nonlinearity DNL MAX1169B, no missing codes 0.7 1.7 LSB NMC Offset Error 2 5 mV Offset-Error Temperature 1.0 ppm/C Coefficient Gain Error (Note 3) 0.25 0.5 %FSR Gain Temperature Coefficient 0.1 ppm/C DYNAMIC PERFORMANCE (f = 1kHz, V = V , f = 58.6ksps) IN(sine wave) IN REF(P-P) SAMPLE Signal-to-Noise Plus Distortion SINAD 86 90 dB Total Harmonic Distortion THD Up to the 5th harmonic -102 -90 dB Spurious-Free Dynamic Range SFDR 92 105 dB Signal-to-Noise Ratio SNR 87 90 dB Full-Power Bandwidth FPBW -3dB point 4 MHz Full-Linear Bandwidth SINAD > 81dB 33 kHz CONVERSION RATE (Figure 11) Fast mode 7.1 7.5 Conversion Time t s CONV (SCL Stretched Low) High-speed mode 5.8 6 Fast mode 19 Throughput Rate (Note 4) f ksps SAMPLE High-speed mode 58.6 Internal Clock Frequency f 4 MHz CLK Track/Hold Acquisition Time t (Note 5) 1100 ns ACQ Fast mode 50 Aperture Delay, Figure 11c t ns AD (Note 6) High-speed mode 30 2 MAX1169