MAX140 3+1/2 Digit ADC with LED Driver Datasheet

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MAX140 - MAX140 3+1/2 Digit ADC with LED Driver

Product Details

The MAX140 3+1/2 Digit LED Driver with Analog to Digital Converter, is a fully integrated IC, capable of reading and displaying analog values. The IC can read both positive and negative input voltages. The MAX140 is the low segment-current version of the MAX139 and is used in low power applications.

Features

Single Supply +2.5V to +7.0V Operation
Measures Both Positive and Negative Input Voltages
Charge-Pump Voltage Inverter Generates a Negative Supply Voltage
Internal Bandgap Reference
On-Board Display Driver
Low Segment Current (MAX140)

Pin Layout

Pin Description

Pin Number	Description
1	V+ - Positive Supply
2	D1 - 1's Digit Segment D
3	C1 - 1's Digit Segment C
4	B1 - 1's Digit Segment B
5	A1 - 1's Digit Segment A
6	F1 - 1's Digit Segment F
7	G1 - 1's Digit Segment G
8	E1 - 1's Digit Segment E
9	D2 - 10's Digit Segment D
10	C2 - 10's Digit Segment C
11	B2 - 10's Digit Segment B
12	A2 - 10's Digit Segment A
13	F2 - 10's Digit Segment F
14	E2 - 10's Digit Segment E
15	D3 - 100's Digit Segment D
16	B3 - 100's Digit Segment B
17	F3 - 100's Digit Segment F
18	E3 - 100's Digit Segment E
19	AB4 - Absolute
20	POL - Polarity
21	DGND - Digital Ground
22	G3 - 100's Digit Segment G
23	A3 - 100's Digit Segment A
24	C3 - 100's Digit Segment C
25	G2 - 10's Digit Segment G
26	V- - Negative Supply
27	INT - Integrator
28	BUF - Buffer
29	A/Z -
30	IN LO - Input Low
31	IN HI - Input High
32	COMMON - Common
33	C-REF - External Reference Capacitor
34	C+REF - External Reference Capacitor
35	REF LO - Voltage Reference Low
36	REF HI - Voltage Reference High
37	TEST - Test Input
38	CAP- - Charge Pump Capacitor
39	GND - Ground
40	CAP+ - Charge Pump Capacitor

Dimensional Drawing

Technical Data

Datasheet

Maxim Integrated - Datasheet for MAX140

Application Notes