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LTC1606A

16-Bit, 250ksps, Single Supply ADC

Linear Technology 

FEATURES

■ Sample Rate: 250ksps

■ Single 5V Supply

■ Bipolar Input Range: ±10V

■ Signal-to-Noise Ratio: 90dB Typ

■ Power Dissipation: 75mW Typ

■ Guaranteed No Missing Codes

■ Integral Nonlinearity: ±2.0LSB Max

■ Operates with Internal or External Reference

■ Internal Synchronized Clock

■ 28-Pin SSOP and SO Packages

■ 100ksps Version (LTC1605)

■ Improved 2nd Source to AD976A and ADS7805

■ Available in 28-Lead Plastic SSOP and SO Packages

U

APPLICATIO S

■ Industrial Process Control

■ Multiplexed Data Acquisition Systems

■ High Speed Data Acquisition for PCs

■ Digital Signal Processing

LTC1606

16-Bit, 250ksps,

Single Supply ADC

DESCRIPTIO

The LTC®1606 is a 250ksps, sampling 16-bit A/D con-

verter that draws only 75mW (typical) from a single 5V

supply. This easy-to-use device includes sample-and-

hold, precision reference, switched capacitor successive

approximation A/D and trimmed internal clock.

The LTC1606’s input range is an industry standard ±10V.

Maximum DC specs include ±2.0LSB INL and 16 bits no

missing codes over temperature. An external reference

can be used if greater accuracy over temperature is

needed.

The 90dB signal-to-noise ratio offers an improvement of

3dB over competing devices, and the RMS transition noise

is reduced (0.65LSB vs 1LSB) relative to competitive

parts.

The ADC has a microprocessor compatible, 16-bit or two

byte parallel output port. A convert start input and a data

ready signal (BUSY) ease connections to FIFOs, DSPs and

microprocessors.

, LTC and LT are registered trademarks of Linear Technology Corporation.

All other trademarks are the property of their respective owners.

BASIC CO FIGURATIO

Low Power, 250kHz, 16-Bit Sampling ADC on 5V Supply

5V

LTC1606

28 27

VDIG VANA

±10V 200Ω 1 VIN

INPUT

7.35k

33.2k

2.5k

9k

10µF

0.1µF

16-BIT

SAMPLING ADC

6 TO 13

15 TO 22

D15 TO D0

16-BIT

OR 2 BYTE

PARALLEL

BUS

4.096V

10µF

4 CAP

3 REF

2.5V

2.2µF

1.64x

BUFFER

4k

REFERENCE

CONTROL

LOGIC AND

TIMING

AGND1 AGND2 DGND

2

5

14

BUSY 26

CS 25

R/C 24

BYTE 23

DIGITAL

CONTROL

SIGNALS

1606 TA01

2.0

1.5

1.0

0.5

0

–0.5

–1.0

–1.5

–2.0

0

Typical INL Curve

16384

32768

CODE

49152 65535

1606 G04

1606fa

1

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