MAX1491CNI+ Maxim Integrated Products, MAX1491CNI+ Datasheet - Page 13

• 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

Figure 9. LCD Voltage Waveform—Combinations 1–4 (BP1/2/3, SEGa/d/g)
______________________________________________________________________________________
g, d OFF
a, d OFF
a, g OFF
a ON
g ON
d ON
BP1
BP2
BP3
OFF
ALL
φ1, φ2, φ3 - - BP HIGH WITH RESPECT TO SEGMENT (BP+ TIME)
φ1', φ2', φ3' - - BP LOW WITH RESPECT TO SEGMENT (BP- TIME)
BP1 ACTIVE DURING φ1 AND φ1'
BP2 ACTIVE DURING φ2 AND φ2'
BP3 ACTIVE DURING φ3 AND φ3'
φ1
φ2
3.5- and 4.5-Digit, Single-Chip
FREQUENCY = 107Hz
φ3
φ1'
ADCs with LCD Drivers
φ2'
φ3'
V+ = DV
V
V
L
LCD
= 1/3 V
= DV
DD
LCD
DD
, V
H
- GND
, V- = GND
= 2/3 DV
DD
V+
V
V
V-
V+
V
V
V-
V+
V
V
V-
V+
V
V
V-
V+
V
V
V-
V+
V
V
V-
V+
V
V
V-
H
L
H
L
H
L
H
L
H
L
H
L
H
L
V
LCD
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