AD9049BRS(Rev0) View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

AD9049BRS
(Rev.:Rev0)

9-Bit, 30 MSPS ADC

Analog Devices 

AD9049

Table I. AD9049 Digital Coding (Single Ended Input AIN, AINB Bypassed to GND)

Analog Input

Voltage Level

Digital Output

MSB . . . LSB Digital Output

3.810

3.300

2.790

Positive Full Scale

Midscale

Negative Full Scale

111111111

011111111

000000000

PIN DESCRIPTIONS

Pin No

Name

Function

OBSOLETE 1, 7, 12, 21, 23

2, 8, 11

3

4

5

6

9

10

13

14

15

16–19

20, 22

24–26

27

28

GND

VD

VREFOUT

VREFIN

COMP

REFBP

AINB

AIN

ENCODE

NC

D8 (MSB)

D7–D4

VDD

D3–D1

D0 (LSB)

NC

Ground.

Analog +5 V ± 5% power supply.

Internal bandgap voltage reference (nominally +2.5 V).

Input to reference amplifier. Voltage reference for ADC is connected here.

Internal compensation pin, 0.1 µF bypass connected here to VD (+5 V).

External connection for (0.1 µF) reference bypass capacitor.

Complementary analog input pin (Analog input bar).

Analog input pin.

Encode clock input to ADC. Internal T/H is placed in hold mode (ADC is encoding)

on rising edge of encode signal.

Not internally connected.

Most significant bit of ADC output.

Digital output bits of ADC.

Digital output power supply (only used by digital outputs).

Digital output bits of ADC.

Least significant bit of ADC output.

Not internally connected.

PIN CONNECTIONS

GND 1

28 NC

VD 2

27 D0 (LSB)

VREFOUT 3

VREFIN 4

COMP 5

26 D1

25 D2

24 D3

REFBP 6

23 GND

GND 7 AD9049 22 VDD

TOP VIEW

VD 8 (Not to Scale) 21 GND

AINB 9

20 VDD

AIN 10

19 D4

VD 11

GND 12

18 D5

17 D6

ENCODE 13

16 D7

NC 14

15 D8 (MSB)

NC = NO CONNECT

CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily

accumulate on the human body and test equipment and can discharge without detection.

Although the AD9049 features proprietary ESD protection circuitry, permanent damage may

occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD

precautions are recommended to avoid performance degradation or loss of functionality.

–4–

WARNING!

ESD SENSITIVE DEVICE

REV. 0

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