MAX1193 19-2794 Rev 1 9/03 Ultra-Low-Power, 45Msps, Dual 8-Bit ADC General Description Features The MAX1193 is an ultra-low-power, dual, 8-bit, Ultra-Low Power 45Msps analog-to-digital converter (ADC). The device 57mW (Normal Operation: 45Msps) features two fully differential wideband track-and-hold 0.3W (Shutdown Mode) (T/H) inputs. These inputs have a 440MHz bandwidth Excellent Dynamic Performance and accept fully differential or single-ended signals. The MAX1193 delivers a typical signal-to-noise and dis- 48.5dB/48.3dB SNR at f = 5.5MHz/100MHz IN tortion (SINAD) of 48.5dB at an input frequency of 70dBc/68dBc SFDR at f = 5.5MHz/100MHz IN 5.5MHz and a sampling rate of 45Msps while consum- 2.7V to 3.6V Single Analog Supply ing only 57mW. This ADC operates from a 2.7V to 3.6V 1.8V to 3.6V TTL/CMOS-Compatible Digital analog power supply. A separate 1.8V to 3.6V supply Outputs powers the digital output driver. In addition to ultra-low operating power, the MAX1193 features three power- Fully Differential or Single-Ended Analog Inputs down modes to conserve power during idle periods. Internal/External Reference Option Excellent dynamic performance, ultra-low power, and small size make the MAX1193 ideal for applications in Multiplexed CMOS-Compatible Tri-State Outputs imaging, instrumentation, and digital communications. 28-Pin Thin QFN Package An internal 1.024V precision bandgap reference sets Evaluation Kit Available (Order MAX1193EVKIT) the full-scale range of the ADC to 0.512V. A flexible reference structure allows the MAX1193 to use its inter- nal reference or accept an externally applied reference Ordering Information for applications requiring increased accuracy. The MAX1193 features parallel, multiplexed, CMOS- PART TEMP RANGE PIN-PACKAGE compatible tri-state outputs. The digital output format is 28 Thin QFN-EP* offset binary. A separate digital power input accepts a MAX1193ETI-T -40C to +85C (5mm x 5mm) voltage from 1.8V to 3.6V for flexible interfacing to dif- ferent logic levels. The MAX1193 is available in a 5mm *EP = Exposed paddle. 5mm, 28-pin thin QFN package, and is specified for the extended industrial (-40C to +85C) temperature range. Pin Configuration For higher sampling frequency applications, refer to the TOP VIEW MAX1195MAX1198 dual 8-bit ADCs. Pin-compatible versions of the MAX1193 are also available. Refer to the MAX1191 data sheet for 7.5Msps, and the MAX1192 data sheet for 22Msps. Applications INA- 1 21 D0 Ultrasound and Medical Imaging INA+ 2 20 D1 IQ Baseband Sampling GND 3 19 D2 Battery-Powered Portable Instruments CLK 4 18 D3 MAX1193 Low-Power Video GND 5 17 A/B WLAN, Mobile DSL, WLL Receiver INB+ 6 16 D4 EXPOSED PADDLE INB- 7 15 D5 5mm x 5mm THIN QFN Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com. V 8 28 V DD DD V 27 REFP 9 DD GND 10 26 REFN OGND 11 25 COM OV DD 12 24 REFIN 13 23 PD0 D7 D6 14 22 PD1Ultra-Low-Power, 45Msps, Dual 8-Bit ADC ABSOLUTE MAXIMUM RATINGS V , OV to GND ...............................................-0.3V to +3.6V Operating Temperature Range ...........................-40C to +85C DD DD OGND to GND.......................................................-0.3V to +0.3V Junction Temperature......................................................+150C INA+, INA-, INB+, INB- to GND .................-0.3V to (V + 0.3V) Storage Temperature Range .............................-65C to +150C DD CLK, REFIN, REFP, REFN, COM to GND...-0.3V to (V + 0.3V) Lead Temperature (soldering, 10s) .................................+300C DD PD0, PD1 to OGND .................................-0.3V to (OV + 0.3V) DD Digital Outputs to OGND.........................-0.3V to (OV + 0.3V) DD Continuous Power Dissipation (T = +70C) A 28-Pin Thin QFN (derated 20.8mW/C above +70C) ..1667mW 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 = 3.0V, OV = 1.8V, V = V (internal reference), C 10pF at digital outputs, f = 45MHz, C = C = C = DD DD REFIN DD L CLK REFP REFN COM 0.33F, T = -40C to +85C, unless otherwise noted. Typical values are at T = +25C.) (Note 1) A A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DC ACCURACY Resolution 8 Bits Integral Nonlinearity INL 0.16 1.00 LSB Differential Nonlinearity DNL No missing codes over temperature 0.15 1.00 LSB +25C 4 Offset Error %FS < +25C 6 Gain Error Excludes REFP - REFN error 2 %FS DC Gain Matching 0.01 0.2 dB Gain Temperature Coefficient 30 pp m /C Offset (V 5%) 0.2 DD Power-Supply Rejection LSB Gain (V 5%) 0.05 DD ANALOG INPUT Differential Input Voltage Range V Differential or single-ended inputs 0.512 V DIFF Common-Mode Input Voltage V V / 2 V COM DD Range Input Resistance R Switched capacitor load 120 k IN Input Capacitance C 5pF IN CONVERSION RATE Maximum Clock Frequency f 45 MHz CLK Channel A 5.0 Clock Data Latency cycles Channel B 5.5 DYNAMIC CHARACTERISTICS (differential inputs, 4096-point FFT) f = 3.75MHz 48.5 IN Signal-to-Noise Ratio SNR f = 5.5MHz 47 48.5 dB IN (Note 2) f = 22.5MHz 48.4 IN f = 3.75MHz 48.5 IN Signal-to-Noise and Distortion SINAD f = 5.5MHz 47 48.5 dB IN (Note 2) f = 22.5MHz 48.4 IN 2 MAX1193