MAX5105 MAXIM [Maxim Integrated Products], MAX5105 Datasheet
MAX5105
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MAX5105 Summary of contents
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... DAC outputs to their respective REFL_ voltages. The MAX5105 includes an asynchronous MUTE input, as well as a RDY/BSY output that indicates the status of the nonvolatile memory. The MAX5105 is available in a 20-pin QSOP and 20-pin wide SO packages, and the MAX5106 is available in a 16-pin QSOP package. ________________________Applications ...
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Nonvolatile, Quad, 8-Bit DACs ABSOLUTE MAXIMUM RATINGS , DIN, CS, CLK, MUTE to GND .............................-0.3V, + DOUT, REFH_, REFL_, RDY/BSY, OUT_ to GND .........................................-0. Maximum Current into Any Pin .........................................±50mA Continuous Power Dissipation (T = +70°C) ...
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ELECTRICAL CHARACTERISTICS (continued +2.7V to +5.5V, GND = V DD REFH_ V = +3V and T = +25°C PARAMETER SYMBOL Output Current (Note 3) Amplifier Output Resistance (Note 3) DIGITAL INPUTS Input High Voltage ...
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Nonvolatile, Quad, 8-Bit DACs ELECTRICAL CHARACTERISTICS (continued +2.7V to +5.5V, GND = V DD REFH_ V = +3V and T = +25°C PARAMETER SYMBOL DIGITAL TIMING CLK Period t CLK High Time t CLK ...
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FFhex GND REFL_ DAC ZERO-CODE OUTPUT VOLTAGE vs. OUTPUT SINK CURRENT 0 +0.2V 0 +5V REFL_ +0.2V REFL_ 0.2 ...
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... GND REFH1 DAC1 CODE = 00hex - +5V DD -60 -70 -80 -90 -100 1 10 100 1k 10k 100k 1M 10M 100M FREQUENCY (Hz) 1LSB DIGITAL STEP-CHANGE (POSITIVE) MAX5105/06 toc15 OUT1 1.0 µs/div V = +3. 500kHz DD CLK V = +2.5V CODE = 7F HEX TO 80 HEX REFH1 C = 100pF R = 10kΩ LOAD L CLOCK FEEDTHROUGH ...
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... NEGATIVE SETTLING TIME MAX5105/06 toc21 2.5V OUT1 +5. +4.096V REFH1 C = 100pF LOAD MAX5105/06 toc20 5V 0 4.096V 0 2.0 µs/div f = 500kHz CLK CODE = 00 HEX TO FF HEX R = 10kΩ L MAX5105/06 toc22 5V 0 4.096V 0 2.0 µs/div f = 500kHz CLK CODE = FF HEX TO 00 HEX R = 10kΩ ...
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... REFH3 20 16 REFH2 Detailed Description The MAX5105/MAX5106 quad, 8-bit DACs feature an internal, nonvolatile EEPROM, which stores the DAC states for initialization during power-up. These devices consist of four resistor string DACs, four rail-to-rail buffers, a 14-bit shift register, oscillator, power-on reset (POR) circuitry, and five volatile and five nonvolatile memory registers (Functional Diagram) ...
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... DAC1 DAC0 DAC3 (mute high-impedance state (shutdown). Placing all four DACs in shutdown reduces supply cur- rent to 10µA (max). The MAX5105 also provides an R15 asynchronous MUTE input, simultaneously driving all DAC outputs to their respective REFL_ voltages. R16 The MAX5105/MAX5106 internal EEPROM consists of five nonvolatile registers that retain the DAC output and operating states after the device is powered down ...
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Nonvolatile, Quad, 8-Bit DACs Table 2. Serial Interface Programming Commands 14-BIT SERIAL WORD START ...
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... Data is sent MSB first and is transmitted in one 14-bit word. A 4-wire interface adds a line for RDY/BSY (MAX5105), indicating the status of the nonvolatile memory. Data is transmitted and received simultaneously. Figure 3 shows the detailed serial interface timing. Note that the clock should be low stopped between updates ...
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Nonvolatile, Quad, 8-Bit DACs CS SCLK DIN DACO Figure 2. 3-Wire Interface Timing CS t CSS CLK DIN DOUT Figure 3. Detailed ...
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... START DIN HIGH IMPEDANCE DOUT RDY/BSY (MAX5105 ONLY) Figure 5. Nonvolatile Store Command Timing Diagram The nonvolatile store command is ignored if all DACs are muted or in shutdown. Register Write Command This command directly loads the DAC data to the selected DAC volatile register and updates the respec- ...
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... CO HIGH IMPEDANCE DOUT RDY/BSY (MAX5105 ONLY) Figure 7. Nonvolatile Read Command Timing Diagram on the rising edge of CLK corresponding to D0. The register write command does not affect data stored in the nonvolatile memory. Figure 6 shows the register write command timing diagram. Nonvolatile Read Command ...
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... Mute drives the selected DAC output to the correspond- ing REFL_ voltage. The volatile DAC register retains its data, and the output returns to its previous state when mute is removed. The MAX5105 also features an asyn- chronous MUTE input that mutes all DACs. The output buffers are individually disabled/muted with ones in the proper data bits (D7– ...
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... External Voltage Reference The MAX5105/MAX5106 have two reference inputs for each DAC, REFH_, and REFL_. REFH_ sets the full- scale voltage, while REFL_ sets the zero code output. REFL2 and REFL3 are internally connected to GND in the MAX5106. A 256kΩ ...
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... SHIFT REGISTER/ COMMAND DECODER DIN DAC2 NONVOLATILE CLK REGISTER CS DAC3 NONVOLATILE REGISTER MUTE/ SHUTDOWN NONVOLATILE REGISTER *MAX5105 ONLY GND MAX5106: REFL2 AND REFL3 ARE INTERNALLY CONNECTED TO GND. _______________________________________________________________________________________ Functional Diagram V MUTE* DD POWER-ON MAX5105 RESET MAX5106 CIRCUIT REFH0 DAC0 VOLATILE DAC0 ...
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Nonvolatile, Quad, 8-Bit DACs 18 ______________________________________________________________________________________ Package Information ...
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Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim ...