Maxim MAX12557 manual FCLK = 65.00352MHz, fIN = 175MHz, PDISS, Iovdd Digital

Dual, 65Msps, 14-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.)

-THD, SFDR vs. ANALOG SUPPLY VOLTAGE

(fCLK = 65.00352MHz, fIN = 175MHz)

SNR, SINAD vs. DIGITAL SUPPLY VOLTAGE	-THD, SFDR vs. DIGITAL SUPPLY VOLTAGE
(fCLK = 65.00352MHz, fIN = 70MHz)	(fCLK = 65.00352MHz, fIN = 70MHz)

MAX12557

-THD, SFDR (dBc)

85		MAX12557 toc22
80	SFDR
75

-THD

70

65

60

3.0 3.1 3.2 3.3 3.4 3.5 3.6

VDD (V)

	80							toc23		95
	76			SNR				MAX12557		90
(dB)									(dBc)	85
	72									80
SINAD				SINAD					SFDR
										75
SNR,	68								-THD,
										70
	64									65
	60							3.6		60
	1.5	1.8	2.1	2.4	2.7	3.0	3.3
				OVDD (V)

SFDR	toc24
	MAX12557

-THD

1.5	1.8	2.1	2.4	2.7	3.0	3.3	3.6
			OVDD (V)

SNR, SINAD vs. DIGITAL SUPPLY VOLTAGE	-THD, SFDR vs. DIGITAL SUPPLY VOLTAGE	PDISS, IVDD (ANALOG) vs. ANALOG SUPPLY VOLTAGE
(fCLK = 65.00352MHz, fIN = 175MHz)	(fCLK = 65.00352MHz, fIN = 175MHz)	(fCLK = 65.00352MHz, fIN = 175MHz)

	75			SNR				toc25		80
								MAX12557
	72									76
(dB)	69								(dBc)	72
SINAD									SFDR
				SINAD
SNR,	66								-THD,	68
	63									64
	60							3.6		60
	1.5	1.8	2.1	2.4	2.7	3.0	3.3
				OVDD (V)

							toc26	900
				SFDR			MAX12557	800
								700
							mA)
								600
							(mW,
				-THD				500
							VDD
								400
							, I
							DISS	300
							P
								200
								100
1.5	1.8	2.1	2.4	2.7	3.0	3.3	3.6	0
			OVDD (V)

						toc27
		PDISS (ANALOG)				MAX12557
				IVDD
3.0	3.1	3.2	3.3	3.4	3.5	3.6

VDD (V)

PDISS, IOVDD (DIGITAL)

vs. DIGITAL SUPPLY VOLTAGE

(fCLK = 65.00352MHz, fIN = 175MHz)

	80	CL ≈	5pF					toc28
	70							MAX12557
	60
mA)
	50
(mW,			PDISS (DIGITAL)
OVDD	40
, I	30
DISS						IOVDD
P	20
	10
	0
	1.5	1.8	2.1	2.4	2.7	3.0	3.3	3.6
				OVDD (V)

SNR, SINAD vs. CLOCK DUTY CYCLE

(fIN = 70MHz, AIN = -0.5dBFS)

	72	SNR	toc29		90
			MAX12557
	70				85
(dB)	68			(dBc)	80
	SINAD
SNR, SINAD	66			-THD, SFDR	75
	64				70
	62				65

		SINGLE-ENDED CLOCK DRIVE				60
60
25	35	45	55	65	75

CLOCK DUTY CYCLE (%)

-THD, SFDR vs. CLOCK DUTY CYCLE

(fIN = 70MHz, AIN = -0.5dBFS)

SFDR	toc30
	MAX12557
-THD

SINGLE-ENDED CLOCK DRIVE

25	35	45	55	65	75
		CLOCK DUTY CYCLE (%)

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