MAX1183 19-2173 Rev 1 7/06 Dual 10-Bit, 40Msps, 3V, Low-Power ADC with Internal Reference and Parallel Outputs General Description Features The MAX1183 is a 3V, dual 10-bit analog-to-digital con- Single 3V Operation verter (ADC) featuring fully differential wideband track- Excellent Dynamic Performance: and-hold (T/H) inputs, driving two pipelined, nine-stage 59.6dB SNR at f = 20MHz IN ADCs. The MAX1183 is optimized for low-power, high 73dB SFDR at f = 20MHz IN dynamic performance applications in imaging, instrumen- Low Power: tation, and digital communication applications. This ADC operates from a single 2.7V to 3.6V supply, consuming 40mA (Normal Operation) only 120mW while delivering a typical signal-to-noise ratio 2.8mA (Sleep Mode) (SNR) of 59.6dB at an input frequency of 20MHz and a 1A (Shutdown Mode) sampling rate of 40Msps. The T/H driven input stages 0.02dB Gain and 0.25 Phase Matching incorporate 400MHz (-3dB) input amplifiers. The convert- Wide 1V Differential Analog Input Voltage P-P ers may also be operated with single-ended inputs. In addition to low operating power, the MAX1183 features a Range 2.8mA sleep mode as well as a 1A power-down mode to 400MHz -3dB Input Bandwidth conserve power during idle periods. On-Chip 2.048V Precision Bandgap Reference An internal 2.048V precision bandgap reference sets User-Selectable Output FormatTwos the full-scale range of the ADC. A flexible reference Complement or Offset Binary structure allows the use of this internal or an externally 48-Pin TQFP Package with Exposed Paddle for derived reference, if desired for applications requiring Improved Thermal Dissipation increased accuracy or a different input voltage range. The MAX1183 features parallel, CMOS-compatible Ordering Information three-state outputs. The digital output format can be set to twos complement or straight offset binary through a PART TEMP RANGE PIN-PACKAGE single control pin. The device provides for a separate MAX1183ECM -40C to +85C 48 TQFP-EP* output power supply of 1.7V to 3.6V for flexible interfac- MAX1183ECM+ -40C to +85C 48 TQFP-EP* ing. The MAX1183 is available in a 7mm 7mm, 48-pin TQFP package, and is specified for the extended *EP = Exposed paddle. industrial (-40C to +85C) temperature range. +Denotes lead-free package. Pin-compatible lower and higher speed versions of the Pin Configuration MAX1183 are also available. See Table 2 at end of data sheet for a list of pin-compatible versions. Refer to the MAX1180 data sheet for 105Msps, the MAX1181 data sheet for 80Msps, the MAX1182 data sheet for 65Msps, and the MAX1184 data sheet for 20Msps. In addition to these speed grades, this family includes a multiplexed COM 1 36 D1A output version, for which digital data is presented time- V 2 35 D0A DD interleaved and on a single, parallel 10-bit output port. GND 3 34 OGND INA+ 4 33 OV DD Applications INA- 5 32 OV DD V 6 31 OGND DD MAX1183 High-Resolution Imaging GND 7 30 D0B INB- 8 29 D1B I/Q Channel Digitization INB+ 9 28 D2B Multichannel IF Sampling GND 10 27 D3B EP V 11 26 D4B DD Instrumentation CLK 12 25 D5B Video Application Ultrasound 48 TQFP-EP Functional Diagram appears at end of data sheet. NOTE: THE PIN 1 INDICATOR FOR LEAD-FREE PACKAGE IS REPLACED BY A + SIGN. 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. 48 GND 13 REFN V 14 47 REFP DD V 15 46 REFIN DD GND 16 45 REFOUT T/B 17 44 D9A SLEEP 18 43 D8A PD 19 42 D7A OE 20 41 D6A D9B 21 40 D5A D8B 22 39 D4A D7B 23 38 D3A D6B 24 37 D2ADual 10-Bit, 40Msps, 3V, Low-Power ADC with Internal Reference and Parallel Outputs ABSOLUTE MAXIMUM RATINGS V , OV to GND .............................................. -0.3V to +3.6V Continuous Power Dissipation (T = +70C) DD DD A OGND to GND.......................................................-0.3V to +0.3V 48-Pin TQFP-EP INA+, INA-, INB+, INB- to GND ...............................-0.3V to V (derate 30.4mW/C above +70C)..........................2430mW DD REFIN, REFOUT, REFP, REFN, Operating Temperature Range ...........................-40C to +85C COM, CLK to GND .................................-0.3V to (V + 0.3V) Junction Temperature......................................................+150C DD Storage Temperature Range .............................-60C to +150C OE, PD, SLEEP, T/B Lead Temperature (soldering, 10s) .................................+300C D9AD0A, D9BD0B to OGND ...........-0.3V to (OV + 0.3V) DD 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 = 3V, OV = 2.5V, 0.1F and 1.0F capacitors from REFP, REFN, and COM to GND, REFOUT connected to REFIN through a DD DD 10k resistor, V = 2V (differential with respect to COM), C = 10pF at digital outputs (Note 1), f = 40MHz, T = T to T , IN P-P L CLK A MIN MAX unless otherwise noted. Typical values are at T = +25C.) (Note 2) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DC ACCURACY Resolution 10 Bits Integral Nonlinearity INL f = 7.51MHz 0.5 1.7 LSB IN Differential Nonlinearity DNL f = 7.51MHz, no missing codes guaranteed 0.25 1.0 LSB IN Offset Error <1 1.8 % FS Gain Error 02 % FS ANALOG INPUT Differential Input Voltage Range V Differential or single-ended inputs 1.0 V DIFF Common-Mode Input Voltage V /2 DD V V CM Range 0.5 Input Resistance R Switched capacitor load 50 k IN Input Capacitance C 5pF IN CONVERSION RATE Maximum Clock Frequency f 40 MHz CLK Clock Data Latency 5 Cycles DYNAMIC CHARACTERISTICS f = 7.51MHz, T = +25C 57.3 59.6 Signal-to-Noise Ratio INA or B A SNR dB (Note 3) f = 20MHz, T = +25C 56.8 59.6 INA or B A f = 7.51MHz, T = +25C 57 59.4 Signal-to-Noise and Distortion INA or B A SINAD dB (Note 3) f = 20MHz, T = +25C 56.5 59 INA or B A f = 7.51MHz, T = +25C 65 76 Spurious-Free Dynamic Range INA or B A SFDR dBc (Note 3) f = 20MHz, T = +25C 65 73 INA or B A f = 7.51MHz, T = +25C -73 -64 INA or B A Total Harmonic Distortion THD dBc (First 4 harmonics) (Note 3) f = 20MHz, T = +25C -73 -63 INA or B A f = 7.51MHz -76 Third-Harmonic Distortion INA or B HD3 dB (Note 3) f = 20MHz -73 INA or B f = 11.6066MHz at -6.5dBFS, INA or B Intermodulation Distortion IMD f = 13.3839MHz at -6.5dBFS -78 dBc INA or B (Note 4) 2 MAX1183