Rainbow-electronics MAX1209 Manuel d'utilisateur Page 1

General DescriptionThe MAX1209 is a 3.3V, 12-bit, 80Msps analog-to-digitalconverter (ADC) featuring a fully differential widebandtrack-and-hold (T/H)

MAX120912-Bit, 80Msps, 3.3V IF-Sampling ADC10 ______________________________________________________________________________________626463656667686970

MAX120912-Bit, 80Msps, 3.3V IF-Sampling ADC______________________________________________________________________________________ 1101.51.00.52.52.03.

MAX120912-Bit, 80Msps, 3.3V IF-Sampling ADC12 ______________________________________________________________________________________PIN NAME FUNCTION1

MAX120912-Bit, 80Msps, 3.3V IF-Sampling ADC______________________________________________________________________________________ 13PIN NAME FUNCTION2

MAX1209Detailed DescriptionThe MAX1209 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.

MAX1209All three modes of reference operation require thesame bypass capacitor combinations. Bypass COMwith a 2.2µF capacitor to GND. Bypass REFP andR

The state of the duty-cycle equalizer input (DCE)changes the waveform at DAV. With the duty-cycleequalizer disabled (DCE = low), the DAV signal is the

MAX1209for 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

Power-Down Input (PD)The MAX1209 has two power modes that are controlledwith the power-down digital input (PD). With PD low, theMAX1209 is in normal o

MAX120912-Bit, 80Msps, 3.3V IF-Sampling ADC2 _______________________________________________________________________________________ABSOLUTE MAXIMUM R

MAX120912-Bit, 80Msps, 3.3V IF-Sampling ADC20 ______________________________________________________________________________________BINARY-TO-GRAY COD

The circuit of Figure 11 converts a single-ended inputsignal to fully differential just as Figure 10. However,Figure 11 utilizes an additional transfo

MAX1209Buffered External Reference Drives Multiple ADCsThe buffered external reference mode allows for morecontrol over the MAX1209 reference voltage

Unbuffered External Reference Drives Multiple ADCsThe unbuffered external reference mode allows for pre-cise control over the MAX1209 reference and al

MAX1209chain providing 2.157V, 1.649V, and 1.141V to theMAX1209’s REFP, COM, and REFN reference inputs,respectively. The feedback around the MAX4230 o

etc. SNR is computed by taking the ratio of the RMSsignal to the RMS noise. RMS noise includes all spec-tral components to the Nyquist frequency exclu

MAX1209Aperture JitterFigure 4 depicts the aperture jitter (tAJ), which is thesample-to-sample variation in the aperture delay.Output Noise (nOUT)The

MAX120912-Bit, 80Msps, 3.3V IF-Sampling ADCMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Max

MAX120912-Bit, 80Msps, 3.3V IF-Sampling ADC_______________________________________________________________________________________ 3ELECTRICAL CHARACT

MAX120912-Bit, 80Msps, 3.3V IF-Sampling ADC4 _______________________________________________________________________________________ELECTRICAL CHARACT

MAX120912-Bit, 80Msps, 3.3V IF-Sampling ADC_______________________________________________________________________________________ 5ELECTRICAL CHARACT

MAX120912-Bit, 80Msps, 3.3V IF-Sampling ADC6 _______________________________________________________________________________________Note 1: Specificat

MAX120912-Bit, 80Msps, 3.3V IF-Sampling ADC_______________________________________________________________________________________ 7-100-30-40-10-20-7

MAX120912-Bit, 80Msps, 3.3V IF-Sampling ADC8 _______________________________________________________________________________________SNR, SINADvs. SAMP

MAX120912-Bit, 80Msps, 3.3V IF-Sampling ADC_______________________________________________________________________________________ 9253530404550556065