MAX1491CNI+ Maxim Integrated Products, MAX1491CNI+ Datasheet - Page 4

• Manufacturer Part Number: MAX1491CNI+
• Description: IC ADC W/LCD DRIVER 28-DIP
• Manufacturer: Maxim Integrated Products

Specifications of MAX1491CNI+

• Display Type: LCD
• Configuration: 7 Segment + 2 Annunciators
• Digits Or Characters: A/D 3.5 Digits
• Current - Supply: 980µA
• Voltage - Supply: 2.7 V ~ 5.25 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: 28-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Interface: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

3.5- and 4.5-Digit, Single-Chip
ADCs with LCD Drivers
ELECTRICAL CHARACTERISTICS (continued)
(AV
to T
Note 1: Integral nonlinearity is the derivation of the analog values at any code from its theoretical value after nulling the gain error
Note 2: Offset calibrated.
Note 3: Offset nulled.
Note 4: The input voltage range for the analog inputs is given with respect to the voltage on the negative input of the differential pair.
Note 5: For the range of V
Note 6: External load must be constant during conversion for specified accuracy. Guaranteed specification of 2mV/mA is a result of
Note 7: Measured at DC by changing the power-supply voltage from 2.7V to 5.25V and measuring its effect on the conversion error.
Note 8: Analog power-supply currents are measured with all digital inputs at either GND or DV
4
POWER SUPPLY
AV
DV
Power-Supply Rejection AV
Power-Supply Rejection DV
AV
DV
LCD DRIVER
RMS Segment-On Voltage
RMS Segment-Off Voltage
Display Multiplex Rate
LCD Data-Update Rate
DD
MAX
DD
DD
DD
DD
_______________________________________________________________________________________
= DV
Voltage
Current
Voltage
Current
, unless otherwise noted. Typical values are at +25°C, unless otherwise noted.)
and offset error.
production test limitations.
PSRR at 50Hz and 60Hz exceeds 120dB with filter notches of 10, 20, 30, 40, 50, or 60Hz.
measured with all digital inputs at either GND or DV
PARAMETER
DD
= +2.7V to +5.25V, GND = 0, V
AIN+
DD
DD
or V
AIN-
SYMBOL
PSRR
PSRR
DV
I
I
AV
AVDD
DVDD
= -2.2V to +2.2V and V
DD
DD
A
D
REF+
(Note 7)
(Note 7)
(Note 8)
DV
DV
DD
DD
- V
= 5V
= 3.3V
REF-
DD
= 2.048V (external reference), C
CONDITIONS
.
REF+
or V
REF-
= -2.2V to +2.2V.
NEG
2.70
2.70
MIN
DD
= 0.1µF. All specifications are T
. Digital power-supply currents
1.92 x
1 / 3 x
DV
DV
TYP
100
107
2.5
80
DD
DD
MAX
5.25
5.25
660
320
180
UNITS
dB
dB
µA
µA
Hz
Hz
V
V
V
V
MIN