Maxim MAX12527 manual SNR, Sinad vs. Temperature fIN = 175MHz, AIN = -0.5dBFS

Page 11

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.)

SNR, SINAD vs. TEMPERATURE (fIN = 175MHz, AIN = -0.5dBFS)

 

72

 

 

 

 

toc31

 

 

 

SNR

 

 

 

 

 

 

 

MAX12527

 

70

 

 

 

 

 

 

 

 

 

 

(dB)

68

 

SINAD

 

 

 

 

 

 

 

 

SINAD

 

 

 

 

 

66

 

 

 

 

 

SNR,

64

 

 

 

 

 

 

 

 

 

 

 

 

62

 

 

 

 

 

 

60

-15

10

35

60

 

 

-40

85

 

 

 

TEMPERATURE (°C)

 

 

-THD, SFDR vs. TEMPERATURE (fIN = 175MHz, AIN = -0.5dBFS)

 

90

 

 

 

 

toc32

 

 

 

 

 

 

 

85

 

 

SFDR

 

MAX12527

 

 

 

 

 

 

 

 

 

 

 

SFDR (dBc)

80

 

 

 

 

 

75

 

 

-THD

 

 

-THD,

 

 

 

 

 

70

 

 

 

 

 

 

 

 

 

 

 

 

65

 

 

 

 

 

 

60

 

 

 

 

 

 

-40

-15

10

35

60

85

 

 

 

TEMPERATURE (°C)

 

 

MAX12527

 

 

GAIN ERROR vs. TEMPERATURE

 

 

 

OFFSET ERROR vs. TEMPERATURE

 

 

3

 

 

 

 

toc33

 

0.3

 

 

 

 

toc34

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

MAX12527

(%ERROROFFSETFSR)

0.2

 

 

 

 

MAX12527

(%FSR)ERRORGAIN

1

 

 

 

 

 

0.1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

0

 

 

 

 

 

 

-1

 

 

 

 

 

 

-0.1

 

 

 

 

 

 

-2

 

 

 

 

 

 

-0.2

 

 

 

 

 

 

-3

 

 

 

 

 

 

-0.3

 

 

 

 

 

 

-40

-15

10

35

60

85

 

-40

-15

10

35

60

85

 

 

 

TEMPERATURE (°C)

 

 

 

 

 

TEMPERATURE (°C)

 

 

______________________________________________________________________________________ 11

Image 11
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 Vcom Interchannel CharacteristicsInternal Reference Refout 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 Record MAX12527 THD, Sfdr vs. Clock Speed fIN = 70MHz, AIN = -0.5dBFS THD, Sfdr vs. Clock Duty Cycle FIN = 70MHz, AIN = -0.5dBFS FCLK = 65.00352MHz, fIN = 175MHzFIN = 70MHz, AIN = -0.5dBFS SNR, Sinad vs. Temperature fIN = 175MHz, AIN = -0.5dBFS Same side of the PC board Pin DescriptionPIN Name Function 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 Applications Information Using Transformer CouplingSingle-Ended AC-Coupled Input Signal 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 TimeOffset Matching Pin ConfigurationGain Matching 68L QFN THIN.EPS Package Information