MAX1421(2001) 查看數據表（PDF） - Maxim Integrated
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MAX1421 Datasheet PDF : 17 Pages
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12-Bit, 40Msps, +3.3V, Low-Power ADC
with Internal Reference
ABSOLUTE MAXIMUM RATINGS
AVDD, DVDD to AGND ..............................................-0.3V to +4V
DVDD, AVDD to DGND..............................................-0.3V to +4V
DGND to AGND.....................................................-0.3V to +0.3V
INP, INN, REFP, REFN, REFIN,
CML, CLK, CLK,....................(AGND - 0.3V) to (AVDD + 0.3V)
D0–D11, OE, PD .......................(DGND - 0.3V) to (DVDD + 0.3V)
Continuous Power Dissipation (TA = +70°C)
48-Pin TQFP (derate 12.5mW/°C above +70°C)........1000mW
Maximum Junction Temperature .....................................+150°C
Operating Temperature Ranges
MAX1421CCM ...................................................0°C to +70°C
MAX1421ECM ................................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VAVDD = VDVDD = +3.3V, AGND = DGND = 0, VIN = ±1.024V, differential input voltage at -0.5dB FS, internal reference,
fCLK = 40MHz (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
DC ACCURACY
Resolution
RES
12
Bits
Differential Nonlinearity
Integral Nonlinearity
Mid-scale Offset
DNL
INL
MSO
TA = +25°C, no missing codes
TA = TMIN to TMAX
TA = TMIN to TMAX
-1
±0.5
±2
-3
±.75
1
LSB
LSB
3 %FSR
Mid-scale Offset Temperature
Coefficient
Gain Error
MSOTC
Internal reference (Note 1)
External reference applied to REFIN (Note 2)
GE
External reference applied to REFP, CML,
and REFN (Note 3)
3 ✕ 10-4
-5
0.1
5
-5
±3
5
-1.5 ±0.5 1.5
%/°C
%FSR
Gain Error Temperature
Coefficient
GETC
External reference applied to REFP, CML,
and REFN, (Note 3)
15 ✕ 10-6
%/°C
DYNAMIC PERFORMANCE (fCLK = 40MHz, 4096-point FFT)
Signal-to-Noise Ratio
SNR
fIN = 5MHz
fIN = 15MHz, TA = +25°C
Spurious-Free Dynamic Range
SFDR
fIN = 5MHz
fIN = 15MHz, TA = +25°C
Total Harmonic Distortion
Signal-To-Noise Plus Distortion
THD
SINAD
fIN = 5MHz
fIN = 15MHz, TA = +25°C
fIN = 5MHz
fIN = 15MHz, TA = +25°C
Effective Number of Bits
ENOB
fIN = 5MHz
fIN = 15MHz, TA = +25°C
Two-Tone Intermodulation
Distortion
IMDTT
fIN1 = 11.569MHz, fIN2 = 13.445MHz
(Note 4)
67
dB
62
66
73
dBc
64
70
-74
dBc
-69
-62
66
dB
60
63.5
10.7
Bits
60
10.3
-80
dBc
2 _______________________________________________________________________________________
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