_______________General Description

The MAX114/MAX118 are microprocessor-compatible,

8-bit, 4-channel and 8-channel analog-to-digital con-

verters (ADCs). They operate from a single +5V supply

and use a half-flash technique to achieve a 660ns con-

version time (1Msps). A power-down (

PWRDN) pin

reduces current consumption typically to 1µA. The

devices return from power-down mode to normal oper-

ating mode in less than 200ns, allowing large supply-

current reductions in burst-mode applications (in burst

mode, the ADC wakes up from a low-power state at

specified intervals to sample the analog input signals).

Both converters include a track/hold, enabling the ADC

to digitize fast analog signals.

Microprocessor (µP) interfaces are simplified because the

ADC can appear as a memory location or I/O port without

external interface logic. The data outputs use latched,

three-state buffer circuitry for direct connection to an 8-bit

parallel µP data bus or system input port. The

MAX114/MAX118 input/reference configuration enables

ratiometric operation.

The 4-channel MAX114 is available in a 24-pin DIP or

SSOP. The 8-channel MAX118 is available in a 28-pin

DIP or SSOP. For +3V applications, refer to the

MAX113/MAX117 data sheet.

________________________Applications

High-Speed DSP

Remote Data Acquisition

Portable Equipment

Communications Systems

____________________________Features

o Single +5V Supply Operation

o 4 (MAX114) or 8 (MAX118) Analog Input Channels

o Low Power: 40mW (operating mode)

5µW (power-down mode)

o Total Unadjusted Error

≤1LSB

o Fast Conversion Time: 660ns per Channel

o No External Clock Required

o Internal Track/Hold

o 1MHz Full-Power Bandwidth

o Internally Connected 8th Channel Monitors

Reference Voltage (MAX118)

+5V, 1Msps, 4 & 8-Channel,

8-Bit ADCs with 1µA Power-Down

________________________________________________________________

Maxim Integrated Products

1

4-BIT

DAC

4-BIT

FLASH

ADC

(4MSBs)

4-BIT

FLASH

ADC

(4LSBs)

TIMING AND

CONTROL

ADDRESS

LATCH

DECODE

REF+

16

THREE-

STATE

OUTPUT

DRIVERS

D7

D6

D5

D4

D3

D2

D1

D0

MUX

*IN7

*IN8

Σ

REF+

*IN6

*IN5

IN4

IN3

IN2

IN1

A0

A1

A2

REF-

PWRDN

RD

MODE

INT

WR/RDY

CS

MAX114/MAX118

* MAX118 ONLY

_________________________________________________________Functional Diagram

19-1083; Rev 1; 8/96

PART

MAX114CNG

MAX114CAG

MAX114C/D

0°C to +70°C

0°C to +70°C

0°C to +70°C

TEMP. RANGE

PIN-PACKAGE

24 Narrow Plastic DIP

24 SSOP

Dice*

______________Ordering Information

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800

MAX114ENG

MAX114EAG

MAX114MRG

-55°C to +125°C

-40°C to +85°C

-40°C to +85°C

24 Narrow Plastic DIP

24 SSOP

24 Narrow CERDIP**

Ordering Information continued on last page.

**Contact factory for availability.

Pin Configurations appear on last page.