General Description

The MAX11047/MAX11048/MAX11049 16-bit ADCs

offer 4, 6, or 8 independent input channels. Featuring

independent track and hold (T/H) and SAR circuitry,

these parts provide simultaneous sampling at 250ksps

for each channel.

The MAX11047/MAX11048/MAX11049 accept a 0 to

+5V input. All inputs are overrange protected with inter-

nal ±20mA input clamps providing overrange protec-

tion with a simple external resistor. Other features

include a 4MHz T/H input bandwidth, internal clock,

and internal or external reference. A 20MHz, 16-bit,

bidirectional, parallel interface provides the conversion

results and accepts digital configuration inputs.

The MAX11047/MAX11048/MAX11049 operate with a

4.75V to 5.25V analog supply and a separate flexible 2.7V

to 5.25V digital supply for interfacing with the host without a

level shifter. The MAX11047/MAX11048/MAX11049

are available in a 56-pin TQFN package and operate over

the extended -40°C to +85°C temperature range.

Applications

Automatic Test Equipment

Power-Factor Monitoring and Correction

Power-Grid Protection

Multiphase Motor Control

Vibration and Waveform Analysis

Features

o 4-/6-/8-Channel 16-Bit ADC

o Single Analog and Digital Supply

o High-Impedance Inputs Up to 1GΩ

o On-Chip T/H Circuit for Each Channel

o Fast 3µs Conversion Time

o High Throughput: 250ksps for All 8 Channels

o 16-Bit, High-Speed, Parallel Interface

o Internal Clocked Conversions

o 10ns Aperture Delay

o 100ps Channel-to-Channel T/H Matching

o Low Drift, Accurate 4.096V Internal Reference

Providing an Input Range of 0 to 5V

o External Reference Range of 3.0V to 4.25V,

Allowing Full-Scale Input Ranges of +3.7V to

+5.2V

o 56-Pin TQFN Package (8mm x 8mm)

o Evaluation Kit Available

4-/6-/8-Channel, 16-Bit,

Simultaneous-Sampling ADCs

____________________________

Maxim Integrated Products

1

Ordering Information

19-5106; Rev 0; 12/09

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

EVALUATION

KIT

AVAILABLE

PART

PIN-PACKAGE

CHANNELS

MAX11047ETN+

56 TQFN-EP*

4

MAX11048ETN+

56 TQFN-EP*

6

MAX11049ETN+

56 TQFN-EP*

8

Note: All devices are specified over the -40°C to +85°C operating

temperature range.

+

Denotes a lead(Pb)-free/RoHS-compliant package.

*

EP = Exposed pad.

Functional Diagram

CLAMP

S/H

16-BIT ADC

CLAMP

S/H

16-BIT ADC

REF

BUF

CONFIGURATION

REGISTERS

INTERFACE

AND

CONTROL

BANDGAP

REFERENCE

CH0

AVDD

AGNDS

AGND

CH7

DB15

DB0

DB3

DB4

EOC

SHDN

CONVST

CS

RD

WR

DGND

DVDD

RDC

REFIO

INT REF

EXT REF

MAX11047

MAX11048

MAX11049

TOP VIEW

TQFN

+

15

17

16

18

19

20

21

22

23

24

25

26

27

28

DB1

*EP

DB0

EOC

CONVST

SHDN

DVDD

DGND

RDC

AGNDS

AVDD

AGND

CH0

AGNDS

RDC

DB14

DB15

RD

CS

WR

DVDD

DGND

RDC

AGNDS

AVDD

AGND

CH7

AGNDS

RDC

48

47

46

45

44

43

54

53

56

55

52

51

50

49

1

2

3

4

5

6

7

8

9

10

11 121314

42 41 40 39 38 37 36 35 34 33 32 31 30 29

MAX11047

MAX11048

MAX11049

Pin Configuration