Rainbow-electronics MAX1208 Uživatelský manuál

General DescriptionThe MAX1208 is a 3.3V, 12-bit, 80Msps analog-to-digitalconverter (ADC) featuring a fully differential widebandtrack-and-hold (T/H)

MAX120812-Bit, 80Msps, 3.3V ADC10 ______________________________________________________________________________________SNR, SINADvs. TEMPERATUREMAX12

MAX120812-Bit, 80Msps, 3.3V ADC______________________________________________________________________________________ 11REFERENCE OUTPUT VOLTAGELOAD R

MAX120812-Bit, 80Msps, 3.3V ADC12 ______________________________________________________________________________________PIN NAME FUNCTION1 REFPPositiv

MAX120812-Bit, 80Msps, 3.3V ADC______________________________________________________________________________________ 13PIN NAME FUNCTION28 D2 CMOS Di

MAX1208Detailed DescriptionThe MAX1208 uses a 10-stage, fully differential,pipelined architecture (Figure 1) that allows for high-speed conversion whi

REFOUT sources up to 1.0mA and sinks up to 0.1mAfor external circuits with a load regulation of 35mV/mA.Short-circuit protection limits IREFOUTto a 2.

MAX1208All three modes of reference operation require thesame bypass capacitor combinations. Bypass COMwith a 2.2µF capacitor to GND. Bypass REFP andR

Data-Valid Output (DAV)DAV is a single-ended version of the input clock (CLKP).Output data changes on the falling edge of DAV, andDAV rises once outpu

MAX1208for two’s complement (G/T = 0)where CODE10is the decimal equivalent of the digitaloutput code as shown in Table 2.Digital outputs D11–D0 are hi

MAX1208 is in normal operating mode. With PD high,the MAX1208 is in power-down mode.The power-down mode allows the MAX1208 to efficient-ly use power b

MAX120812-Bit, 80Msps, 3.3V ADC2 _______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSELECTR

MAX120812-Bit, 80Msps, 3.3V ADC20 ______________________________________________________________________________________BINARY-TO-GRAY CODE CONVERSION

step-up transformer can be selected to reduce thedrive requirements. A reduced signal swing from theinput driver, such as an op amp, can also improve

MAX1208Buffered External Reference Drives Multiple ADCsThe buffered external reference mode allows for morecontrol over the MAX1208 reference voltage

Unbuffered External Reference Drives Multiple ADCsThe unbuffered external reference mode allows for pre-cise control over the MAX1208 reference and al

MAX1208respectively. The feedback around the MAX4230 opamps provides additional 10Hz lowpass filtering. The2.157V and 1.141V reference voltages set th

In reality, there are other noise sources besides quanti-zation noise: thermal noise, reference noise, clock jitter,etc. SNR is computed by taking the

MAX1208Output Noise (nOUT)The output noise (nOUT) parameter is similar to the ther-mal + quantization noise parameter and is an indicationof the ADC’s

MAX120812-Bit, 80Msps, 3.3V ADCMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product.

MAX120812-Bit, 80Msps, 3.3V ADC_______________________________________________________________________________________ 3ELECTRICAL CHARACTERISTICS (co

MAX120812-Bit, 80Msps, 3.3V ADC4 _______________________________________________________________________________________ELECTRICAL CHARACTERISTICS (co

MAX120812-Bit, 80Msps, 3.3V ADC_______________________________________________________________________________________ 5ELECTRICAL CHARACTERISTICS (co

MAX120812-Bit, 80Msps, 3.3V ADC6 _______________________________________________________________________________________Note 1: Specifications ≥+25°C

MAX120812-Bit, 80Msps, 3.3V ADC_______________________________________________________________________________________ 7SINGLE-TONE FFT PLOT(8192-POIN

MAX120812-Bit, 80Msps, 3.3V ADC8 _______________________________________________________________________________________SNR, SINADvs. SAMPLING RATEMAX

MAX120812-Bit, 80Msps, 3.3V ADC_______________________________________________________________________________________ 9SNR, SINADvs. ANALOG INPUT AMP