MAX1367 Maxim Integrated Products, MAX1367 Datasheet - Page 10

• Manufacturer Part Number: MAX1367
• Description: (MAX1365 / MAX1367) Digit Panel Meters
• Manufacturer: Maxim Integrated Products

Stand-Alone, 4.5-/3.5-Digit Panel Meters
with 4–20mA Output
10
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PIN
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
DPSET2
DPSET1
LED_EN
SEGDP
NAME
HOLD
SEGG
DPON
LEDG
SEGA
SEGB
SEGC
SEGD
SEGE
NEGV
LEDV
SEGF
REF+
DIG0
DIG1
DIG2
DIG3
DIG4
REF-
Hold Logic Input. Connect HOLD to DV
HOLD to GND to update the LED at a rate of 2.5Hz and disable the hold function. Placing the
device into hold mode initiates an offset mismatch calibration. Assert HOLD high for a minimum of
2s to ensure the completion of offset mismatch calibration (see Table 1).
Display Decimal-Point Logic-Input 2. Controls the decimal point of the LED. See the Decimal-Point
Control section.
Display Decimal-Point Logic-Input 1. Controls the decimal point of the LED. See the Decimal-Point
Control section.
LED Segment-Drivers Ground
Digit 0 Driver Out (Connected to GLED for the MAX1367)
Digit 1 Driver Out
Digit 2 Driver Out
Digit 3 Driver Out
Digit 4 Driver Out
Segment A Driver
Segment B Driver
LED-Display Segment-Driver Supply. Connect to a +2.7V to +5.25V supply. Bypass with a 0.1µF
capacitor to LEDG.
Segment C Driver
Segment D Driver
Segment E Driver
Segment F Driver
Segment G Driver
Segment DP Driver
Active-High LED Enable. The MAX1365/MAX1367 display driver turns off when LED_EN is low.
The MAX1365/MAX1367 LED-display driver turns on when LED_EN is high.
-2.5V Charge-Pump Voltage Output. Connect a 0.1µF capacitor to GND.
Decimal-Point Enable Input. Controls the decimal point of the LED. See the Decimal-Point Control
section. Connect DPON to DV
ADC Negative Reference Voltage Input. For internal reference operation, connect REF- to GND.
For external reference operation, bypass REF- to GND with a 0.1µF capacitor and
set V
ADC Positive Reference Voltage Input. For internal reference operation, connect a 4.7µF capacitor
from REF+ to GND. For external reference operation, bypass REF+ to GND with a 0.1µF capacitor
and set V
REF-
REF+
from -2.2V to +2.2V (V
from -2.2V to +2.2V (V
DD
REF+
to enable the decimal point.
REF+
> V
DD
REF-
> V
to hold the current ADC value on the LED. Connect
FUNCTION
).
REF-
).
Pin Description (continued)