Rainbow Electronics MAX1425 - Manual (Page 3)

MAX1425
10-Bit, 20Msps ADC
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ELECTRICAL CHARACTERISTICS (continued)
(V AVDD = V CMLP = +5V, V DVDD = +3.3V, V CMLN = V AGND = V DGND = 0, internal reference, digital output load = 35pF, f CLK = 20MHz
(50% duty cycle), T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)
Common-Mode Reference
Voltage
V CML 2.25 V (Note 1)
Differential Reference
Temperature Coefficient
±50 ppm/°C
Positive Reference Voltage V
REFP
3.25 V
Common-Mode Reference
Voltage
V CML 2.25 V
Negative Reference Input
Voltage
V REFN 1.25 V
Differential Reference 1.9 2.0 2.1 V
Positive Reference V REFP 3.25 V
V REFP - V REFN , T A = +25°C
(Note 1)
Input Resistance R IN 6.5 k Ω
Input Capacitance C IN 10 pF
Differential Reference 2.0 V
Input Current I IN -325 325 µA
Input Capacitance C IN 15 pF
REFP Input Range
3.25
±10%
V
CML Input Range
2.25
±10%
V
REFN Input Range
1.25
±10%
V
REFIN (Note 8)
REFIN
V
REFP
- V
REFN
REFP, CML, REFN
REFP, CML, REFN
Input Resistance R IN 3.5 k Ω
Input Capacitance C
IN
8 pF
Input Common-Mode Voltage
Range
V CMVR
2.25
±10%
V
Differential Input Range DR ±2 V
Small-Signal Bandwidth SSBW 400 MHz
Large-Signal Bandwidth LSBW 150 MHz
Either input to ground
Either input to ground
CML (Note 6)
V INP - V INN
(Note 7)
(Note 7)
PARAMETER SYMBOL MIN TYP MAX UNITS CONDITIONS
Negative Reference V REFN 1.25 V (Note 1)
Differential Reference 1.8 2 2.2 V V REFP - V REFN , T A = +25°C
Differential Reference
Temperature Coefficient
±150 ppm/°C
ANALOG INPUT (INP, INN, CML)
REFERENCE (V REFIN = 0; REFP, REFN, CML applied externally)
REFERENCE OUTPUTS (REFP, CML, REFN; external +2.5V reference)
REFERENCE OUTPUTS (REFP, CML, REFN; internal +2.5V reference)