MAX114/MAX118 19-1083 Rev 1 8/96 +5V, 1Msps, 4 & 8-Channel, 8-Bit ADCs with 1A Power-Down General Description Features The MAX114/MAX118 are microprocessor-compatible, Single +5V Supply Operation 8-bit, 4-channel and 8-channel analog-to-digital con- 4 (MAX114) or 8 (MAX118) Analog Input Channels verters (ADCs). They operate from a single +5V supply Low Power: 40mW (operating mode) and use a half-flash technique to achieve a 660ns con- 5W (power-down mode) version time (1Msps). A power-down (PWRDN) pin Total Unadjusted Error 1LSB reduces current consumption typically to 1A. The devices return from power-down mode to normal oper- Fast Conversion Time: 660ns per Channel ating mode in less than 200ns, allowing large supply- No External Clock Required current reductions in burst-mode applications (in burst Internal Track/Hold mode, the ADC wakes up from a low-power state at specified intervals to sample the analog input signals). 1MHz Full-Power Bandwidth Both converters include a track/hold, enabling the ADC Internally Connected 8th Channel Monitors to digitize fast analog signals. Reference Voltage (MAX118) Microprocessor (P) interfaces are simplified because the ADC can appear as a memory location or I/O port without Ordering Information external interface logic. The data outputs use latched, three-state buffer circuitry for direct connection to an 8-bit PART TEMP. RANGE PIN-PACKAGE parallel P data bus or system input port. The MAX114CNG 0C to +70C 24 Narrow Plastic DIP MAX114/MAX118 input/reference configuration enables ratiometric operation. MAX114CAG 0C to +70C 24 SSOP MAX114C/D 0C to +70C Dice* The 4-channel MAX114 is available in a 24-pin DIP or SSOP. The 8-channel MAX118 is available in a 28-pin MAX114ENG -40C to +85C 24 Narrow Plastic DIP DIP or SSOP. For +3V applications, refer to the MAX114EAG -40C to +85C 24 SSOP MAX113/MAX117 data sheet. MAX114MRG -55C to +125C 24 Narrow CERDIP** Ordering Information continued on last page. Applications *Dice are specified at T = +25C, DC parameters only. A High-Speed DSP Remote Data Acquisition **Contact factory for availability. Portable Equipment Communications Systems Pin Configurations appear on last page. Functional Diagram REF+ D7 4-BIT *IN8 D6 FLASH *IN7 ADC D5 *IN6 (4MSBs) D4 *IN5 IN4 MUX 4-BIT THREE- IN3 DAC STATE IN2 OUTPUT DRIVERS IN1 REF+ D3 4-BIT 16 FLASH D2 ADC D1 (4LSBs) D0 ADDRESS LATCH TIMING AND DECODE CONTROL MAX114/MAX118 A0 A1 A2 REF- PWRDN RD CS * MAX118 ONLY MODE WR/RDY INT Maxim Integrated Products 1 For free samples & the latest literature: +5V, 1Msps, 4 & 8-Channel, 8-Bit ADCs with 1A Power-Down ABSOLUTE MAXIMUM RATINGS V to GND..............................................................-0.3V to +7V 28-Pin Wide Plastic DIP DD Digital Input Voltage to GND......................-0.3V to (V + 0.3V) (derate 14.29mW/C above +70C)....................................1.14W DD Digital Output Voltage to GND ...................-0.3V to (V + 0.3V) 28-Pin SSOP (derate 9.52mW/C above +70C)..............762mW DD REF+ to GND..............................................-0.3V to (V + 0.3V) 28-Pin Wide CERDIP DD REF- to GND...............................................-0.3V to (V + 0.3V) (derate 16.67mW/C above +70C)....................................1.33W DD IN to GND .................................................-0.3V to (V + 0.3V) Operating Temperature Ranges DD Continuous Power Dissipation (T = +70C) MAX114/MAX118C ...........................................0C to +70C A 24-Pin Narrow Plastic DIP MAX114/MAX118E ........................................-40C to +85C (derate 13.33mW/C above +70C)....................................1.08W MAX114/MAX118M .....................................-55C to +125C 24-Pin SSOP (derate 8.00mW/C above +70C)..............640mW Storage Temperature Range .............................-65C to +150C 24-Pin Narrow CERDIP Lead Temperature (soldering, 10sec) .............................+300C (derate 12.50mW/C above +70C).........................................1W 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 = +5V 5%, REF+ = 5V, REF- = GND, Read Mode (MODE = GND), T = T to T , unless otherwise noted.) DD A MIN MAX PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS ACCURACY (Note 1) Resolution N 8 Bits Total Unadjusted Error TUE 1 LSB Differential Nonlinearity DNL No-missing-codes guaranteed 1 LSB Zero-Code Error 1 LSB Full-Scale Error 1 LSB Channel-to-Channel Mismatch 1/4 LSB DYNAMIC PERFORMANCE MAX11 C/E, f = 1MHz, f = 195.8kHz 45 Signal-to-Noise Plus SAMPLE IN SINAD dB Distortion Ratio MAX11 M, f = 740kHz, f = 195.7kHz 45 SAMPLE IN MAX11 C/E, f = 1MHz, f = 195.8kHz -50 SAMPLE IN Total Harmonic Distortion THD dB MAX11 M, f = 740kHz, f = 195.7kHz -50 SAMPLE IN MAX11 C/E, fSAMPLE = 1MHz, fIN = 195.8kHz 50 Spurious-Free Dynamic SFDR dB Range MAX11 M, f = 740kHz, f = 195.7kHz 50 SAMPLE IN Input Full-Power Bandwidth V = 5Vp-p 1 MHz IN Input Slew Rate, Tracking 3.1 15 V/s ANALOG INPUT Input Voltage Range V V V V IN REF- REF+ Input Leakage Current I GND < V < V 3 A IN IN DD Input Capacitance C 32 pF IN REFERENCE INPUT Reference Resistance R 12 4 k REF REF+ Input Voltage Range V V V REF- DD REF- Input Voltage Range GND V V REF+ 2 MAX114/MAX118