MAX1420(2001) 데이터 시트보기 (PDF) - Maxim Integrated

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MAX1420
(Rev.:2001)

12-Bit, 60Msps, +3.3V, Low-Power ADC with Internal Reference

Maxim Integrated 

12-Bit, 60Msps, +3.3V, Low-Power ADC

with Internal Reference

ELECTRICAL CHARACTERISTICS (continued)

(VAVDD = VDVDD = +3.3V, AGND = DGND = 0, VIN = ±1.024V, differential input voltage at -0.5dB FS, internal reference, fCLK =

62.5MHz (50% duty cycle), digital output load CL ≈ 10pF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at

TA = +25°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP MAX UNITS

Power Dissipation In Shutdown

Power-Supply Rejection Ratio

PDISS

PSRR

PD = VDVDD

(Note 9)

10

µW

±1

mV/V

TIMING CHARACTERISTICS

Maximum Clock Frequency

Clock High

Clock Low

fCLK

tCH

tCL

Figure 6, clock period 16.667ns

Figure 6, clock period 16.667ns

60

8.33

8.33

MHz

ns

ns

Pipeline Delay (Latency)

Figure 6

7

fCLK

cycles

Aperture Delay

Aperture Jitter

Data Output Delay

Bus Enable Time

Bus Disable Time

tAD

Figure 10

tAJ

Figure 10

tOD

Figure 6

tBE

Figure 5

tBD

Figure 5

2

ns

2

ps

5

10

14

ns

5

ns

5

ns

Note 1: Internal reference, REFIN bypassed to AGND with a combination of 0.22µF in parallel with 1nF capacitor.

Note 2: External +2.048V reference applied to REFIN.

Note 3: Internal reference disabled. VREFIN = 0, VREFP = +2.162V, VCML = +1.65V, and VREFN = +1.138V.

Note 4: IMD is measured with respect to either of the fundamental tones.

Note 5: Specifies the common-mode range of the differential input signal supplied to the MAX1420.

Note 6: VDIFF = VREFP - VREFN.

Note 7: Input bandwidth is measured at a 3dB level.

Note 8: VREFIN is internally biased to +2.048V through a 10kΩ resistor.

Note 9: Measured as the ratio of the change in mid-scale offset voltage for a ±5% change in VAVDD, using the internal reference.

Typical Operating Characteristics

(VAVDD = VDVDD = +3.3V, AGND = DGND = 0, VIN = ±1.024V, differential input voltage at -0.5dB FS, fCLK = 60.006MHz (50% duty

cycle), digital output load CL = 10pF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)

FFT PLOT (8192-POINT DATA RECORD)

DIFFERENTIAL INPUT

0

fIN = 5.5449583MHz

-20

FFT PLOT (8192-POINT DATA RECORD)

DIFFERENTIAL INPUT

0

fIN = 13.4119138MHz

-20

FFT PLOT (8192-POINT DATA RECORD)

DIFFERENTIAL INPUT

0

fIN = 37.701219MHz

-20

-40

-40

-60

HD2

HD3

-60

-80

-80

HD2

HD3

-40

HD3

HD2

-60

-80

-100

-100

-100

-120

0

5 10 15 20 25 30

ANALOG INPUT FREQUENCY (MHz)

-120

0

5 10 15 20 25 30

ANALOG INPUT FREQUENCY (MHz)

-120

0

5 10 15 20 25 30

ANALOG INPUT FREQUENCY (MHz)

_______________________________________________________________________________________ 5

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