 English |
|
|
|
|
|
|
|
| MAX1422 Datasheet, PDF (2/15 Pages) Maxim Integrated Products – 12-Bit, 20Msps, 3.3V, Low-Power ADC with Internal Reference | |||
| |||
| ◁ |
12-Bit, 20Msps, 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)
D0âD11, OE, PD .......................(DGND - 0.3V) to (DVDD + 0.3V)
Continuous Power Dissipation (TA = +70°C)
48-Pin TQFP (derate 21.7mW/°C above +70°C)........1739mW
Operating Temperature Ranges
MAX1422CCM ....................................................0°C to +70°C
MAX1422ECM .................................................-40°C to +85°C
Maximum Junction Temperature .....................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under âAbsolute Maximum Ratingsâ 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 -0.5dBFS, internal reference, fCLK = 20MHz (50%
duty cycle); digital output load CL = 10pF, â¥+25°C guaranteed by production test, <+25°C guaranteed by design and characterization.
Typical values are at TA = +25°C.)
PARAMETER
DC ACCURACY
Resolution
Differential Nonlinearity
Integral Nonlinearity
Mid-scale Offset
SYMBOL
CONDITIONS
RES
DNL
INL
MSO
TA = +25°C, no missing codes
TA = TMIN to TMAX
TA = TMIN to TMAX
MIN TYP MAX UNITS
12
Bits
-1
1
LSB
±0.5
±2
LSB
-3
±.75
3
%FSR
Mid-scale Offset Temperature
Coefficient
MSOTC
3 â 10-4
%/°C
Gain Error
Internal reference (Note 1)
-5
±0.1
5
External reference applied to REFIN, (Note 2) -5
±0.2
5
GE
%FSR
External reference applied to REFP, CML,
and REFN (Note 3)
-1.5
1.5
Gain Error Temperature
Coefficient
GETC
External reference applied to REFP, CML,
and REFN (Note 3)
15 â 10-6
%/°C
DYNAMIC PERFORMANCE (fCLK = 20MHz, 4096-point FFT)
Signal-to-Noise Ratio
SNR
fIN = 5MHz, TA = +25°C
Spurious-Free Dynamic Range
SFDR fIN = 5MHz, TA = +25°C
Total Harmonic Distortion
THD
fIN = 5MHz, TA = +25°C
Signal-to-Noise and Distortion
Effective Number of Bits
SINAD
ENOB
fIN = 5MHz, TA = +25°C
fIN = 5MHz
63
67
dB
64
74
dBc
-72
-63
dBc
60
65
dB
10.5
Bits
Two-Tone Intermodulation
Distortion
Differential Gain
Differential Phase
ANALOG INPUTS (INP, INN, CML)
Input Resistance
Input Capacitance
Common-Mode Input Level
(Note 5)
IMD
DG
DP
RIN
CIN
VCML
fIN1 = 7.028MHz, fIN2 = 8.093MHz (Note 4)
Either input to ground
Either input to ground
-77
±1
±0.25
61
4
VAVDD â
0.5
dBc
%
Degrees
kâ¦
pF
V
2 _______________________________________________________________________________________
|
▷ |
German
Russian
Spanish
Italian
Polish
Chinese
Japanese
Korean
French
Portuguese