MAX1421 Maxim, MAX1421 Datasheet - Page 4

• Manufacturer Part Number: MAX1421
• Description: 12-Bit / 40Msps / +3.3V / Low-Power ADC with Internal Reference
• Manufacturer: Maxim

12-Bit, 40Msps, +3.3V, Low-Power ADC
with Internal Reference
4
ELECTRICAL CHARACTERISTICS (continued)
(V
f
T
CLK
A
DIGITAL INPUTS (CLK, CLK, OE, PD)
Differential Reference Voltage
Range
CML Input Voltage Range
REFP Input Voltage Range
REFN Input Voltage Range
Input Logic High
Input Logic Low
Input Current
Input Capacitance
DIGITAL OUTPUTS (D0–D11)
Output Logic High
Output Logic Low
Three-State Leakage
Three-State Capacitance
POWER REQUIREMENTS
Analog Supply Voltage
Digital Supply Voltage
Analog Supply Current
Analog Supply Current with
Internal Reference in Shutdown
Analog Shutdown Current
Digital Supply Current
Digital Shutdown Current
Power Dissipation
Power-Supply Rejection Ratio
TIMING CHARACTERISTICS
Clock Frequency
Clock High
Clock Low
AVDD
= +25°C.)
_______________________________________________________________________________________
= 40MHz (50% duty cycle), digital output load C
= V
PARAMETER
DVDD
= +3.3V, AGND = DGND = 0, V
SYMBOL
V
V
V
V
I
I
V
V
P
PSRR
AVDD
DVDD
V
f
V
DVDD
AVDD
REFP
REFN
V
t
V
CLK
t
DIFF
CML
DISS
CH
CL
OH
OL
IH
IL
V
CLK, CLK
PD
OE
I
I
REFIN = AGND
PD = DV
PD = DV
Analog power
(Note 9)
Figure 5
Figure 5, clock period 25ns
Figure 5, clock period 25ns
OH
OL
DIFF
= -200µA
= 200µA
IN
L
= V
≈ 10pF, T
= ±1.024V, differential input voltage at -0.5dB FS, internal reference,
DD
DD
REFP
- V
CONDITIONS
REFN
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at
V
V
3.135
0.7
MIN
DVDD
DVDD
- 0.5
-20
-20
-10
2.7
0.1
0
✕
V
V
V
V
±10%
±10%
1.024
CML
±330
DIFF
DIFF
TYP
1.65
12.5
12.5
CML
188
3.3
3.3
5.5
10
52
±1
50
2
/2
/2
+
-
V
V
3.465
MAX
0.3
DVDD
DVDD
214
0.5
3.6
20
20
10
65
63
20
20
40
✕
UNITS
mV/V
MHz
mW
mA
mA
mA
µA
pF
µA
pF
µA
µA
ns
ns
V
V
V
V
V
V
V
V
V
V