MAX1493CCJ+T Maxim Integrated Products, MAX1493CCJ+T Datasheet - Page 21

• Manufacturer Part Number: MAX1493CCJ+T
• Description: IC ADC W/LCD DRIVER 32-TQFP
• Manufacturer: Maxim Integrated Products

Specifications of MAX1493CCJ+T

• Display Type: LCD
• Configuration: 7 Segment + 2 Annunciators
• Digits Or Characters: A/D 4.5 Digits
• Current - Supply: 980µA
• Voltage - Supply: 2.7 V ~ 5.25 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Interface: -
• Lead Free Status / Rohs Status: Details

Gain error is the amount of deviation between the mea-
sured full-scale transition point and the ideal full-scale
transition point.
Common-mode rejection is the ability of a device to
reject a signal that is common to both input terminals.
The common-mode signal can be either an AC or a DC
signal or a combination of the two. CMR is often
expressed in decibels.
Normal mode rejection is a measure of how much output
changes when 50Hz and 60Hz signals are injected into
just one of the differential inputs. The MAX1491/
Normal-Mode 50Hz and 60Hz Rejection
V
4.7µF
IN
2.7V TO
5.25V
______________________________________________________________________________________
0.1µF
L
ISO
Common-Mode Rejection
10µF
0.1µF
4.7µF
0.1µF
(Simultaneously)
AIN+
AIN-
DV
AV
DD
DD
Gain Error
R
HI
3.5- and 4.5-Digit, Single-Chip
LOWBATT
HOLD
R
LOW
(SEG1–SEG10)
V
SEG1–SEG13
NEG
PEAK
0.1µF
MAX1493/MAX1495 sigma-delta converter uses its inter-
nal digital filter to provide normal mode rejection to both
50Hz and 60Hz power-line frequencies simultaneously.
Power-supply rejection ratio (PSRR) is the ratio of the
input supply change (in volts) to the change in the con-
verter output (in volts). It is measured typically
in decibels.
Enhanced offset calibration is a more accurate calibra-
tion method that is needed in the case of the ±200mV
range and 4.5-digit resolution. The MAX1493/MAX1495
perform the enhanced offset calibration upon power-up.
The MAX1495 also performs enhanced offset calibration
on demand with the HOLD input.
ADCs with LCD Drivers
(MAX1491)
MAX1493
MAX1495
GND
LOW BATTERY
REF-
Typical Operating Circuit
Power-Supply Rejection Ratio
REF+
Enhanced Offset Calibration
4.7µF
CONNECTIONS
BACKPLANE
RANGE
DPSET1
DPSET2
INTREF
HOLD
DPON
PEAK
DV
DD
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