MAX5102 データシートの表示（PDF） - Maxim Integrated

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MAX5102

+2.7V to +5.5V, Low-Power, Dual, Parallel 8-Bit DAC with Rail-to-Rail Voltage Outputs

Maxim Integrated 

+2.7V to +5.5V, Low-Power, Dual, Parallel

8-Bit DAC with Rail-to-Rail Voltage Outputs

input latches. To avoid output glitches in the MAX5102,

ensure that data is valid before WR goes low. When the

device powers up (i.e., VDD ramps up), all latches are

internally preset with code 00 hex.

Applications Information

External Reference

The reference source resistance must be considerably

less than the reference input resistance. To keep within

1LSB error in an 8-bit system, RS must be less than

RREF/256. Hence, maintain a value of RS < 1kΩ to

ensure 8-bit accuracy. If VREF is DC only, bypass REF

to GND with a 0.1µF capacitor. Values greater than this

improve noise rejection.

Power Sequencing

The voltage applied to REF should not exceed VDD at

any time. If proper power sequencing is not possible,

connect an external Schottky diode between REF and

VDD to ensure compliance with the absolute maximum

ratings. Do not apply signals to the digital inputs before

the device is fully powered up.

Power-Supply Bypassing and

Ground Management

Digital or AC transient signals on GND can create noise

at the analog output. Return GND to the highest-quality

ground available. Bypass VDD with a 0.1µF capacitor,

located as close to VDD and GND as possible.

Careful PC board ground layout minimizes crosstalk

between the DAC outputs and digital inputs.

Chip Information

TRANSISTOR COUNT: 6848

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