MAX1117/MAX1118/MAX1119 19-1857 Rev 0 11/00 Single-Supply, Low-Power, 2-Channel, Serial 8-Bit ADCs General Description Features The MAX1117/MAX1118/MAX1119 low-power, 8-bit, Single Supply dual-channel, analog-to-digital converters (ADCs) fea- +2.7V to +3.6V (MAX1117) ture an internal track/hold (T/H) voltage reference +2.7V to +5.5V (MAX1118) (MAX1117/MAX1119), clock, and serial interface. The +4.5V to +5.5V (MAX1119) MAX1118 is specified from +2.7V to +5.5V and con- Internal Track/Hold: 100kHz Sampling Rate sumes only 135A at 100ksps. The MAX1117 is speci- fied from +2.7V to +3.6V, and the MAX1119 is specified Internal Reference from +4.5V to +5.5V, each consumes only 175A at +2.048V (MAX1117) 100ksps. +4.096V (MAX1119) The full-scale analog input range is determined by the Reference Input Range: 0 to V (MAX1118) DD internal reference of +2.048V (MAX1117) or +4.096V (MAX1119), or by an externally applied reference rang- SPI/QSPI/MICROWIRE-Compatible Serial Interface ing from +1V to V (MAX1118). All devices feature an DD Small 8-Pin SOT23 Package automatic shutdown mode that reduces supply current to <1A when the device is not in use. The 3-wire serial Automatic Power-Down interface directly connects to SPI, QSPI, and Analog Input Range: 0 to V MICROWIRE devices without external logic. REF Conversions up to 100ksps are performed using an Low Power internal clock. 175A at 100ksps (typ) (MAX1117/MAX1119) The MAX1117/MAX1118/MAX1119 are available in an 135A at 100ksps (typ) (MAX1118) 8-pin SOT23 package with a footprint that is only 11% 18A at 10ksps (typ) of an 8-pin plastic DIP. 1A (typ) in Power-Down Mode Applications Ordering Information Low-Power, Handheld Portable Devices PIN- TOP PART TEMP. RANGE System Diagnostics PACK A G E M A RK Battery-Powered Test Equipment M A X1 11 7 EKA -40C to +85C 8 SOT23 AADW M A X1 1 1 8 E K A -40C to +85C 8 SOT23 AADX Solar-Powered Remote Systems M A X1 1 1 9 E K A -40C to +85C 8 SOT23 AADY Receive Signal Strength Indicators 4mA to 20mA Powered Remote Data Acquisition Systems Pin Configuration TOP VIEW SPI/QSPI are trademarks of Motorola, Inc. V 1 8 SCLK DD MICROWIRE is a trademark of National Semiconductor, Corp. CHO 2 7 DOUT MAX1117 CH1 3 6 CNVST MAX1118 MAX1119 (REF) I.C GND 4 5 Functional Diagram appears at end of data sheet. SOT23 ( ) ARE FOR MAX1118 ONLY Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim s website at www.maxim-ic.com. EVALUATION KIT AVAILABLESingle-Supply, Low-Power, 2-Channel, Serial 8-Bit ADCs ABSOLUTE MAXIMUM RATINGS V to GND...........................................................-0.3V to +6.0V Operating Temperature Range DD CH0,CH1, REF to GND...............................-0.3V to (V + 0.3V) MAX1117EKA ..................................................-40C to + 85C DD Digital Output to GND ................................-0.3V to (V + 0.3V) MAX1118EKA ..................................................-40C to + 85C DD Digital Input to GND ..............................................-0.3V to +6.0V MAX1119EKA ..................................................-40C to + 85C Maximum Current into Any Pin .........................................50mA Storage Temperature Range .............................-60C to +150C Continuous Power Dissipation (T = +70C) Lead Temperature (soldering, 10s) .................................+300C A 8-Pin SOT23 (derate 8.9mW/C above +70C)............714mW 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 = +2.7V to +3.6V (MAX1117), V = +4.5V to +5.5V (MAX1119), V = REF = +2.7V to +5.5V (MAX1118),T = T to T , DD DD DD A MIN MAX unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DC ACCURACY 8 Resolution Bits 1 Relative Accuracy (Note 1) INL LSB 1 Differential Nonlinearity DNL LSB 0.5 Offset Error LSB 1 MAX1118, REF = V LSB DD Gain Error 5 MAX1117/MAX1119 %FSR 5 MAX1118 Gain Temperature Coefficient ppm/C 90 MAX1117/MAX1119 Total Unadjusted Error TUE MAX1118 0.5 1 LSB Channel-to-Channnel Offset 0.1 LSB Matching DYNAMIC PERFORMANCE (25kHz sinewave input, V = V , f = 5MHz, f = 100ksps, R = 100) IN REF(pp) SCLK sample IN 48 Signal-to-Noise Plus Distortion SINAD dB Total Harmonic Distortion THD -69 dB (Up to the 5th Harmonic) 66 Spurious-Free Dynamic Range SFDR dB Small Signal Bandwidth f 4 MHz -3dB ANALOG INPUT Input Voltage Range 0V V REF Input Leakage V = 0 or V 0.7 10 A CH DD Current 18 Input Capacitance C pF IN INTERNAL REFERENCE 2.048 MAX1117 Voltage V V REF 4.096 MAX1119 2 MAX1117/MAX1118/MAX1119