Maxim MAX12527 manual

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

Typical Operating Characteristics (continued)

(VDD = 3.3V, OVDD = 2.0V, GND = 0, REFIN = REFOUT (internal reference mode), CL ≈ 5pF at digital outputs, VIN = -0.5dBFS, DIFFCLK/SECLK = OVDD, PD = GND, G/T = GND, fCLK = 65MHz (50% duty cycle), TA = +25°C, unless otherwise noted.)

MAX12527

FFT PLOT (32,768-POINT DATA RECORD)	TWO-TONE IMD PLOT
	(16,384-POINT DATA RECORD)

	0	fCLK = 65.00352MHz					toc04		0				fCLK = 65.00352MHz
	-10
		AIN = -0.448dBFS					MAX12527		-20				fIN2	= 71.49832MHz
	-20
		fIN = 174.90525MHz											fIN1	= 68.49889MHz
	-30	SNR = 69.4dB											AIN1 = -6.96dBFS
(dBFS)	-40	SINAD = 68.9dB						(dBFS)	-40	fIN1		fIN2	AIN2 = -7.02dBFS
		THD = -78.6dBc											IM3 = -92.25dBc
AMPLITUDE	-50	SFDR = 81.1dBc						AMPLITUDE					IMD = -89.08dBc
	-80								-80
	-60					HD2			-60
	-70		HD3										2fIN2 + fIN1
	-90
	-100								-100
	-110
	-120								-120
	0	5	10	15	20	25	30			0	5	10	15	20	25	30
		ANALOG INPUT FREQUENCY (MHz)									ANALOG INPUT FREQUENCY (MHz)

MAX12527 toc05

AMPLITUDE (dBFS)

		TWO-TONE IMD PLOT
	(16,384-POINT DATA RECORD)
0	fCLK = 65.00352MHz					toc06
-20	fIN1 = 172.50293MHz					MAX12527
	AIN1 = -6.99dBFS
	fIN2 = 177.40198MHz
-40	AIN2 = -7.01dBFS				fIN1
	IM3 = -88.88dBc
	IMD = -82.24dBc
-60			fIN2		fIN1 + fIN2
	fIN2 - fIN1
-80
-100
-120
0	5	10	15	20	25	30
	ANALOG INPUT FREQUENCY (MHz)

		INTEGRAL NONLINEARITY									DIFFERENTIAL NONLINEARITY								SNR, SINAD vs. ANALOG INPUT FREQUENCY
	0.5	vs. DIGITAL OUTPUT CODE									vs. DIGITAL OUTPUT CODE								(fCLK = 65.00352MHz, AIN = -0.5dBFS)
					fCLK = 65MHz			MAX12527toc07		0.5				fCLK = 65MHz			MAX12527toc08		72						SNR		MAX12527toc09
	0.3									0.3									68
	0.4				fIN = 3.00119MHz					0.4				fIN = 3.00119MHz					70
	0.2									0.2								(dB)SINADSNR,	66
(LSB)INL									(LSB)DNL										64
	0.1									0.1
																			62
	0									0														SINAD
																			60
	-0.1									-0.1
																			58
	-0.2									-0.2
																			56
	-0.3
										-0.3									54
	-0.4									-0.4									52
	-0.5									-0.5									50
	0	600	1200	1800	2400	3000	3600	4200		0	600	1200	1800	2400	3000	3600	4200		0	50	100	150	200	250	300	350	400
			DIGITAL OUTPUT CODE									DIGITAL OUTPUT CODE										fIN (MHz)

-THD, SFDR vs. ANALOG INPUT FREQUENCY	SNR, SINAD vs. ANALOG INPUT AMPLITUDE	-THD, SFDR vs. ANALOG INPUT AMPLITUDE
(fCLK = 65.00352MHz, AIN = -0.5dBFS)	(fCLK = 65.00352MHz, fIN = 70MHz)	(fCLK = 65.00352MHz, fIN = 70MHz)

	95								MAX12527toc10		75		MAX12527toc11		95			MAX12527toc12
	90										SNR				85	SFDR
	85										65
						SFDR									75
(dBc)SFDRTHD,	80			-THD						(dB)SINADSNR,	SINAD			(dBc)SFDRTHD,-		-THD
											55
	75														65
											45
	70														55
-	65										35				45
	60										25				35
	55
	50										15				25	-55 -50 -45 -40 -35 -30 -25 -20 -15 -10	-5	0
	0	50	100	150	200	250	300	350	400		-55 -50 -45 -40 -35 -30 -25 -20 -15 -10	-5	0
				fIN (MHz)							AIN (dBFS)					AIN (dBFS)

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