Maxim MAX12527 manual Functional Diagram

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Dual, 65Msps, 12-Bit, IF/Baseband ADC

		CLOCK
INAP	12-BIT	DIGITAL	DATA	OUTPUT	D0A TO D11A
	PIPELINE	ERROR	DATA	OUTPUT
	PIPELINE	ERROR	FORMAT	DRIVERS
INAN	ADC	CORRECTION	FORMAT	DRIVERS	DORA
INAN	ADC	CORRECTION			DORA
REFAP	CHANNEL A
COMA	REFERENCE	MAX12527
REFAN	SYSTEM
REFAN
					G/T
REFIN		INTERNAL
		INTERNAL
REFOUT		REFERENCE			DAV
		GENERATOR
SHREF
REFBP	CHANNEL B				OVDD
REFBP	CHANNEL B
COMB	REFERENCE
REFBN	SYSTEM
REFBN
INBP	12-BIT	DIGITAL	DATA	OUTPUT	D0B TO D11B
	PIPELINE	ERROR	DATA	OUTPUT
INBN	PIPELINE	ERROR	FORMAT	DRIVERS	DORB
	ADC	CORRECTION	FORMAT	DRIVERS
	ADC	CORRECTION
		CLOCK
DIFFCLK/SECLK					VDD
DIFFCLK/SECLK
CLKP		CLOCK		POWER
				POWER
	CLOCK	DUTY-CYCLE		CONTROL	PD
	CLOCK	DUTY-CYCLE		CONTROL
	DIVIDER	EQUALIZER		AND
CLKN	DIVIDER	EQUALIZER		AND
CLKN				BIAS CIRCUITS
				BIAS CIRCUITS
DIV2					GND
DIV2
DIV4

MAX12527

Figure 2. Functional Diagram

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Image 15

Contents Ordering Information FeaturesGeneral Description ApplicationsConversion Rate Parameter Symbol Conditions MIN TYP MAX Units DC AccuracyDynamic Characteristics differential inputs Analog Input INAP, INAN, INBP, InbnParameter Symbol Conditions MIN TYP MAX Units Interchannel Characteristics Internal Reference RefoutVcom Digital Outputs D0A-D11A, D0B-D11B, DORA, DORB, DAV Parameter Symbol Conditions MIN TYPClock Inputs CLKP, Clkn Digital Inputs DIFFCLK/ SECLK, G/ T, PD, DIV2, DIV4DIFFCLK/SECLK = GND Power RequirementsD0A-D11A, Dora OvddFFT Plot 32,768-POINT Data Record Typical Operating CharacteristicsTiming Characteristics Figure FFT Plot 16,384-POINT Data RecordMAX12527 THD, Sfdr vs. Clock Speed fIN = 70MHz, AIN = -0.5dBFS FCLK = 65.00352MHz, fIN = 175MHz FIN = 70MHz, AIN = -0.5dBFSTHD, Sfdr vs. Clock Duty Cycle FIN = 70MHz, AIN = -0.5dBFS SNR, Sinad vs. Temperature fIN = 175MHz, AIN = -0.5dBFS Pin Description PIN Name Function Same side of the PC board D3B D0BD1B D2BRefin Detailed DescriptionShref RefoutFunctional Diagram Reference Output Reference ConfigurationsReference Mode Analog Inputs and Input Track-and-Hold T/H AmplifierClock Input and Clock Control Lines Clock Duty-Cycle EqualizerDIV4 DIV2 Function System Timing RequirementsD11A-D0A D11B-D0B CODE10 Equivalent BinaryD11A-D0A DORVrefp Vrefn Power-Down InputBinary-to-Gray and Gray-to-Binary Code Conversion Using Transformer Coupling Single-Ended AC-Coupled Input SignalApplications Information Unbuffered External Reference Drives Multiple ADCs Buffered External Reference Drives Multiple ADCsMAX12527 Grounding, Bypassing, and Board LayoutParameter Definitions Total Harmonic Distortion THD Aperture DelayFull-Power Bandwidth Overdrive Recovery TimePin Configuration Gain MatchingOffset Matching 68L QFN THIN.EPS Package Information