MAX1400 Maxim, MAX1400 Datasheet - Page 6

• Manufacturer Part Number: MAX1400
• Description: %V / 18-Bit / Low-Power / Multichannel / Oversampling Sigma-Delta ADC
• Manufacturer: Maxim

+5V, 18-Bit, Low-Power, Multichannel,
Oversampling (Sigma-Delta) ADC
ELECTRICAL CHARACTERISTICS (continued)
(V+ = +5V ±5%, V
wise noted. Typical values are at T
6
Note 1: Nominal gain is 0.98. This ensures a full-scale input voltage may be applied to the part under all conditions without caus-
Note 2: Positive Full-Scale Error includes zero-scale errors (unipolar offset error or bipolar zero error) and applies to both unipolar
Note 3: Full-Scale Drift includes zero-scale drift (unipolar offset drift or bipolar zero drift) and applies to both unipolar and bipolar
Note 4: Gain Error does not include zero-scale errors. It is calculated as (full-scale error - unipolar offset error) for unipolar ranges
Note 5: Gain-Error Drift does not include unipolar offset drift or bipolar zero drift. It is effectively the drift of the part if zero-scale
Note 6: Use of the offset DAC does not imply that any input may be taken below AGND.
Note 7: Additional noise added by the offset DAC is dependent on the filter cutoff, gain, and DAC setting. No noise is added for a
Note 8: Guaranteed by design or characterization; not production tested.
Note 9: The input voltage must be within the Absolute Input Voltage Range specification.
Note 10: All AIN and REFIN pins have identical input structures. Leakage is production tested only for the AIN3, AIN4, AIN5,
Note 11: The dynamic load presented by the MAX1400 analog inputs for each gain setting is discussed in detail in the Switching
Note 12: The input voltage range for the analog inputs is with respect to the voltage on the negative input of its respective differen-
Note 13: V
Note 14: These specifications apply to CLKOUT only when driving a single CMOS load.
Note 15: The burn-out currents require a 500mV overhead between the analog input voltage and both V+ and AGND to operate
5V POWER DISSIPATION (V+ = V
CLK = 0 for 1.024MHz, CLK = 1 for 2.4576MHz.)
Power Dissipation
Standby Power Dissipation
_______________________________________________________________________________________
PARAMETER
ing saturation of the digital output data.
and bipolar input ranges. This error does not include the nominal gain of 0.98.
input ranges.
and as (full-scale error - bipolar zero error) for bipolar ranges. This error does not include the nominal gain of 0.98.
error is removed.
DAC code of 0000.
CALGAIN, and CALOFF inputs.
Network section . Values are provided for the maximum allowable external series resistance. Note that this value does not
include any additional capacitance added by the user to the MUXOUT_ or ADCIN_ pins.
tial or pseudo-differential pair. Table 5 shows which inputs form differential pairs.
correctly.
REF
= V
DD
REFIN+
= +2.7V to +5.25V, V
- V
REFIN-
A
.
SYMBOL
DD
= +25°C.)
PD
= +5V, digital inputs = 0 or V
REFIN+
Normal mode,
MF1 = 0,
MF0 = 0
2X mode,
MF1 = 0,
MF0 = 1
4X mode,
MF1 = 1,
MF0 = 0
8X mode,
MF1 = 1,
MF0 = 1
(Note 18)
= +2.50V, REFIN- = AGND, f
CONDITIONS
1.024MHz
2.4576MHz
1.024MHz
2.4576MHz
1.024MHz
2.4576MHz
1.024MHz
2.4576MHz
DD
, external CLKIN, burn-out currents disabled, X2CLK = 0,
CLKIN
Buffers off
Buffers on
Buffers off
Buffers on
Buffers off
Buffers on
Buffers off
Buffers on
Buffers off
Buffers on
Buffers off
Buffers on
Buffers off
Buffers on
Buffers off
Buffers on
= 2.4576MHz, T
MIN
A
= T
MIN
TYP
1.45
2.43
2.43
4.23
1.88
3.70
3.50
2.95
6.85
10.8
25.8
10.2
25.2
11.7
26.7
7.4
10
to T
MAX
MAX
2.55
3.60
3.75
5.75
5.25
10.0
14.0
33.0
15.0
34.0
100
, unless other-
UNITS
mW
µW