MAX1420 Datasheet, PDF (3/17 Pages) Maxim Integrated Products – 12-Bit, 60Msps, +3.3V, Low-Power ADC with Internal Reference

12-Bit, 60Msps, +3.3V, Low-Power ADC
with Internal Reference
ELECTRICAL CHARACTERISTICS (continued)
(V_AVDD = V_DVDD = +3.3V, AGND = DGND = 0, V_IN = ±1.024V, differential input voltage at -0.5dB FS, internal reference, f_CLK =
62.5MHz (50% duty cycle), digital output load C_L ≈ 10pF, T_A = T_MIN to T_MAX, unless otherwise noted. Typical values are at
T_A = +25°C.)
PARAMETER
Differential Gain
Differential Phase
ANALOG INPUTS (INP, INN, CML)
Input Resistance
Input Capacitance
Common-Mode Input Level
(Note 5)
SYMBOL
DG
DP
R_IN
C_IN
V_CML
CONDITIONS
Either input to ground
Either input to ground
MIN
TYP MAX UNITS
±1
%
±0.25
degrees
22
kΩ
4
pF
V_AVDD
V
✕ 0.5
Common-Mode Input Voltage
Range (Note 5)
V_CMVR
V_CML
V
± 5%
Differential Input Range
Small-Signal Bandwidth
Large-Signal Bandwidth
Overvoltage Recovery
V_IN
BW_-3dB
FPBW_-3dB
OVR
V_INP - V_INN (Note 6)
(Note 7)
(Note 7)
1.5 ✕ FS input
INTERNAL REFERENCE (REFIN bypassed with 0.22µF in parallel with 1nF)
±V_DIFF
400
150
1
V
MHz
MHz
Clock
Cycle
Common-Mode Reference
Voltage
V_CML
At CML
V_AVDD
V
✕ 0.5
Positive Reference Voltage
V_REFP
At REFP
V_CML
+ 0.512
V
Negative Reference Voltage
V_REFN
At REFN
V_CML
V
- 0.512
Differential Reference Voltage
Differential Reference
Temperature Coefficient
V_DIFF
REFTC
V_DIFF = V_REFP - V_REFN
1.024 ±5%
±100
V
ppm/°C
EXTERNAL REFERENCE (REFIN = +2.048V)
REFIN Input Resistance
R_IN
REFIN Input Capacitance
C_IN
REFIN Reference Input Voltage
V_REFIN
(Note 8)
5
kΩ
10
pF
2.048
±10%
V
Differential Reference Voltage
V_DIFF
V_DIFF = (V_REFP - V_REFN)
0.95 ✕
1.05 ✕
V_REFIN/2 ^VREFIN/2 V_REFIN/2
V
EXTERNAL REFERENCE (V_REFIN = AGND, reference voltage applied to REFP, REFN, and CML)
REFP, REFN, CML Input Current
I_IN
-200
200
µA
REFP, REFN, CML Input
Capacitance
C_IN
15
pF
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