MAX5188/MAX5191 19-1580 Rev 2 12/01 Dual, 8-Bit, 40MHz, Current/Voltage, Alternate-Phase Output DACs General Description Features The MAX5188 is a dual 8-bit, alternate-phase-update, +2.7V to +3.3V Single-Supply Operation current-output digital-to-analog converter (DAC) Wide Spurious-Free Dynamic Range: 70dB designed for superior performance in systems requiring at f = 2.2MHz analog signal reconstruction with low distortion and OUT low-power operation. The MAX5191 provides equal Fully Differential Outputs for Each DAC specifications, with on-chip output resistors for voltage- 0.5% FSR Gain Mismatch Between DAC Outputs output operation. Both devices are designed for 10pVs glitch operation to reduce distortion and minimize Low-Current Standby or Full Shutdown Modes unwanted spurious signal components at the output. An Internal +1.2V Low-Noise Bandgap Reference on-board +1.2V bandgap circuit provides a well-regu- lated, low-noise reference that may be disabled for Small 28-Pin QSOP Package external reference operation. The MAX5188/MAX5191 are designed to provide a high level of signal integrity for the least amount of power dissipation. Both DACs operate from a +2.7V to +3.3V single supply. Additionally, these DACs have three Ordering Information modes of operation: normal, low-power standby, and full shutdown. A full shutdown provides the lowest pos- PART TEMP. RANGE PIN-PACKAGE sible power dissipation with a maximum shutdown cur- MAX5188BEEI -40C to +85C 28 QSOP rent of 1A. A fast wake-up time (0.5s) from standby MAX5191BEEI -40C to +85C 28 QSOP mode to full DAC operation allows for power conserva- tion by activating the DACs only when required. The MAX5188/MAX5191 are available in a 28-pin QSOP package and are specified for the extended (-40C to +85C) temperature range. For pin-compatible 10-bit versions, refer to the MAX5182/MAX5185 data sheet. Pin Configuration TOP VIEW Applications CREF1 1 28 CREF2 Signal Reconstruction Applications OUT1P 2 27 OUT2P Digital Signal Processing OUT1N 3 26 OUT2N Arbitrary Waveform Generators AGND 4 25 REFO Imaging Applications AV 5 24 REFR DD MAX5188 DACEN 6 23 DGND MAX5191 PD 7 22 DV DD CS 8 21 D7 CLK 9 20 D6 N.C. 10 19 D5 REN 11 18 D4 DGND 12 17 D3 DGND 13 16 D2 D0 14 15 D1 QSOP 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.Dual, 8-Bit, 40MHz, Current/Voltage, Alternate-Phase Output DACs ABSOLUTE MAXIMUM RATINGS AV , DV to AGND, DGND .................................-0.3V to +6V Continuous Power Dissipation (T = +70C) DD DD A Digital Inputs to DGND.............................................-0.3V to +6V 28-Pin QSOP (derate 9.00mW/C above +70C)..........725mW OUT1P, OUT1N, OUT2P, OUT2N, CREF1, Operating Temperature Ranges CREF2 to AGND....................................................-0.3V to +6V MAX5188/MAX5191BEEI..................................-40C to +85C V to AGND ..........................................................-0.3V to +6V Storage Temperature Range .............................-65C to +150C REF AV to DV .....................................................................3.3V Lead Temperature (soldering, 10s) .................................+300C DD DD AGND to DGND.....................................................-0.3V to +0.3V Maximum Current into Any Pin............................................50mA 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 (AV = DV = +3V 10%, AGND = DGND = 0, f = 40MHz, I = 1mA, 400 differential output, C = 5pF, T = T to T , DD DD CLK FS L A MIN MAX unless otherwise noted. Typical values are at T = +25C.) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS STATIC PERFORMANCE Resolution N 8 Bits Integral Nonlinearity INL LSB -1 0.25 +1 Differential Nonlinearity DNL Guaranteed monotonic -1 0.25 +1 LSB MAX5188 -1 +1 LSB Zero-Scale Error MAX5191 -4 +4 LSB Full-Scale Error (Note 1) -20 4 +20 LSB DYNAMIC PERFORMANCE Output Settling Time To 0.5LSB error band 25 ns Glitch Impulse 10 pVs f = 500kHz 72 Spurious-Free Dynamic Range OUT SFDR f = 40MHz dBc CLK to Nyquist f = 2.2MHz, T = +25C 57 70 OUT A f = 500kHz -70 OUT Total Harmonic Distortion THD f = 40MHz dB CLK to Nyquist f = 2.2MHz, T = +25C -68 -63 OUT A f = 500kHz 52 Signal-to-Noise Ratio OUT SNR f = 40MHz dB CLK to Nyquist f = 2.2MHz, T = +25C 46 52 OUT A DAC-to-DAC Output Isolation f = 2.2MHz -60 dB OUT Clock and Data Feedthrough All 0s to all 1s 50 nVs Output Noise 10 pA/Hz Gain Mismatch Between DAC f = 2.2MHz, T = +25C 0.5 1 LSB OUT A Outputs ANALOG OUTPUT Full-Scale Output Voltage V 400 mV FS Voltage Compliance of Output -0.3 0.8 V Output Leakage Current DACEN = 0, MAX5188 only -1 1 A Full-Scale Output Current I MAX5188 only 0.5 1 1.5 mA FS DAC External Output Resistor MAX5188 only 400 Load 2 MAX5188/MAX5191