LTC2335-16 datasheet, PDF - EEWORLD Datasheet

FeaTures

n

LTC2335-16

16-Bit, 1Msps 8-Channel

Differential ±10.24V Input SoftSpan ADC

with Wide Input Common Mode Range

DescripTion

The

LTC

®

2335-16

is a 16-bit, low noise 8-channel multi-

plexed successive approximation register (SAR) ADC with

differential, wide common mode range inputs. Operating

from a 5V low voltage supply, flexible high voltage supplies,

and using the internal reference and buffer, this SoftSpan

TM

ADC can be configured on a conversion-by-conversion

basis to accept ±10.24V, 0V to 10.24V, ±5.12V, or 0V to

5.12V signals on any channel. Alternately, the ADC may

be programmed to cycle through a sequence of channels

and ranges without further user intervention.

The wide input common mode range and 118dB CMRR of

the LTC2335-16 analog inputs allow the ADC to directly

digitize a variety of signals, simplifying signal chain de-

sign. This input signal flexibility, combined with ±1LSB

INL, no missing codes at 16 bits, and 94.4dB SNR, makes

the LTC2335-16 an ideal choice for many high voltage

applications requiring wide dynamic range.

The LTC2335-16 supports pin-selectable SPI CMOS (1.8V

to 5V) and LVDS serial interfaces.

L,

LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and

SoftSpan is a trademark of Linear Technology Corporation. All other trademarks are the property

of their respective owners. Protected by U.S. Patents, including 7705765, 7961132, 8319673.

Other Patents pending.

n

1Msps Throughput

±1LSB INL (Maximum)

Guaranteed 16-Bit, No Missing Codes

Differential, Wide Common Mode Range Inputs

8-Channel Multiplexer with SoftSpan Input Ranges:

±10.24V, 0V to 10.24V, ±5.12V, 0V to 5.12V

±12.5V, 0V to 12.5V, ±6.25V, 0V to 6.25V

94.4dB Single-Conversion SNR (Typical)

−109dB THD (Typical) at f

IN

= 2kHz

118dB CMRR, 125dB Active Crosstalk (Typical)

Rail-to-Rail Input Overdrive Tolerance

Programmable Sequencer with No-Latency Control

Guaranteed Operation to 125°C

Integrated Reference and Buffer (4.096V)

SPI CMOS (1.8V to 5V) and LVDS Serial I/O

No Pipeline Delay, No Cycle Latency

180mW Power Dissipation (Typical)

48-Lead (7mm × 7mm) LQFP Package

applicaTions

n

Programmable Logic Controllers

Industrial Process Control

Power Line Monitoring

Test and Measurement

Typical applicaTion

15V

0.1µF

5V

0.1µF

2.2µF

1.8V TO 5V

0.1µF

Integral Nonlinearity vs

Output Code and Channel

1.00

0.75

0.50

INL ERROR (LSB)

0.25

0

–0.25

–0.50

–0.75

±10.24V RANGE

TRUE BIPOLAR DRIVE (IN

–

= 0V)

ALL CHANNELS

CMOS OR LVDS

I/O INTERFACE

+10V

0V

–10V

TRUE BIPOLAR

+10V

0V

–10V

ARBITRARY

FULLY

DIFFERENTIAL

+5V

0V

–5V

UNIPOLAR

MUX

16-BIT

SAMPLING

ADC

• • •

IN0+

IN0–

V

CC

V

DD

V

DDLBYP

OV

DD

LVDS/CMOS

PD

LTC2335-16

SDO

SCKO

SCKI

SDI

CS

BUSY

CNV

+10V

0V

–10V

SAMPLE

CLOCK

DIFFERENTIAL INPUTS

IN+/IN–

WITH

WIDE INPUT COMMON MODE RANGE

IN7+

IN7–

V

EE

REFBUF

0.1µF

–15V

47µF

REFIN

GND

233516

TA01a

–1.00

–32768

–16384

0.1µF

0

16384

OUTPUT CODE

32768

233516 TA01b

233516f

For more information

www.linear.com/LTC2335-16

1

LTC2335-16

absoluTe MaxiMuM raTings

(Notes 1, 2)

pin conFiguraTion

TOP VIEW

IN7+

IN7–

GND

V

EE

GND

V

DD

V

DD

GND

V

DDLBYP

CS

BUSY

SDI

IN6– 1

IN6+ 2

IN5– 3

IN5+ 4

IN4– 5

IN4+ 6

IN3– 7

IN3+ 8

IN2– 9

IN2+ 10

IN1– 11

IN1+ 12

48

47

46

45

44

43

42

41

40

39

38

37

Supply Voltage (V

CC

) .....................–0.3V to (V

EE

+ 40V)

Supply Voltage (V

EE

)................................ –17.4V to 0.3V

Supply Voltage Difference (V

CC

– V

EE

)......................40V

Supply Voltage (V

DD

) ..................................................6V

Supply Voltage (OV

DD

) ................................................6V

Internal Regulated Supply Bypass (V

DDLBYP

) ... (Note 3)

Analog Input Voltage

IN0

+

to IN7

+

,

IN0

–

to IN7

–

(Note 4) ......... (V

EE

– 0.3V) to (V

CC

+ 0.3V)

REFIN.................................................... –0.3V to 2.8V

REFBUF, CNV (Note 5) ............. –0.3V to (V

DD

+ 0.3V)

Digital Input Voltage (Note 5)..... –0.3V to (OV

DD

+ 0.3V)

Digital Output Voltage (Note 5) .. –0.3V to (OV

DD

+ 0.3V)

Power Dissipation .............................................. 500mW

Operating Temperature Range

LTC2335C ................................................ 0°C to 70°C

LTC2335I .............................................–40°C to 85°C

LTC2335H .......................................... –40°C to 125°C

Storage Temperature Range .................. –65°C to 150°C

36

35

34

33

32

31

30

29

28

27

26

25

GND

SDO–

SDO+

SCKO–/SDO

SCKO+/SCKO

OV

DD

GND

SCKI–/SCKI

SCKI+

SDI–

SDI+

GND

LX PACKAGE

48-LEAD (7mm

×

7mm) PLASTIC LQFP

T

JMAX

= 150°C,

θ

JA

= 53°C/W

orDer inForMaTion

LEAD FREE FINISH

LTC2335CLX-16#PBF

LTC2335ILX-16#PBF

LTC2335HLX-16#PBF

TRAY

LTC2335CLX-16#PBF

LTC2335ILX-16#PBF

LTC2335HLX-16#PBF

PART MARKING*

LTC2335LX-16

PACKAGE DESCRIPTION

48-Lead (7mm × 7mm) Plastic LQFP

TEMPERATURE RANGE

0°C to 70°C

–40°C to 85°C

–40°C to 125°C

Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.

For more information on lead free part marking, go to:

http://www.linear.com/leadfree/

IN0– 13

IN0+ 14

GND 15

V

CC

16

V

EE

17

GND 18

REFIN 19

GND 20

REFBUF 21

PD 22

LVDS/CMOS 23

CNV 24

233516f

2

For more information

www.linear.com/LTC2335-16

LTC2335-16

The

l

denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at T

A

= 25°C. (Note 6)

SYMBOL

V

IN

+

V

IN

–

PARAMETER

Absolute Input Range

(IN0

+

to IN7

+

)

Absolute Input Range

(IN0

–

to IN7

–

)

CONDITIONS

(Note 7)

SoftSpan

7: ±2.5 •

V

REFBUF

Range (Note 7)

SoftSpan

6: ±2.5 •

V

REFBUF

/1.024 Range (Note 7)

SoftSpan 5: 0V to

2.5 •

V

REFBUF

Range (Note 7)

SoftSpan 4: 0V to

2.5 •

V

REFBUF

/1.024 Range (Note 7)

SoftSpan

3: ±1.25 •

V

REFBUF

Range (Note 7)

SoftSpan

2: ±1.25 •

V

REFBUF

/1.024 Range (Note 7)

SoftSpan 1: 0V to

1.25 •

V

REFBUF

Range (Note 7)

SoftSpan 0: 0V to

1.25 •

V

REFBUF

/1.024 Range (Note 7)

l

elecTrical characTerisTics

MIN

V

EE

V

EE

TYP

MAX

V

CC

– 4

V

CC

– 4

2.5 •

V

REFBUF

2.5 •

V

REFBUF

/1.024

2.5 •

V

REFBUF

2.5 •

V

REFBUF

/1.024

1.25 •

V

REFBUF

1.25 •

V

REFBUF

/1.024

1.25 •

V

REFBUF

1.25 •

V

REFBUF

/1.024

V

CC

– 4

(V

CC

− V

EE

)

1

UNITS

V

µA

pF

dB

V

IN

+ – V

IN

– Input Differential Voltage

Range

l

–2.5 •

V

REFBUF

l

–2.5 •

V

REFBUF

/1.024

l

0

l

0

l

–1.25 •

V

REFBUF

l

–1.25 •

V

REFBUF

/1.024

l

0

l

0

l

V

CM

Input Common Mode Voltage (Note 7)

Range

(Note 8)

V

EE

−(V

CC

− V

EE

)

–1

50

10

V

IN

+ – V

IN

– Input Differential Overdrive

Tolerance

I

IN

C

IN

CMRR

V

IHCNV

V

ILCNV

I

INCNV

Analog Input Leakage Current

Analog Input Capacitance

Input Common Mode

Rejection Ratio

CNV High Level Input Voltage

CNV Low Level Input Voltage

CNV Input Current

Sample Mode

Hold Mode

V

IN

+ = V

IN

− = 18V

P-P

200Hz Sine

l

100

1.3

118

0.5

–10

10

V

μA

V

IN

= 0V to V

DD

l

temperature range, otherwise specifications are at T

A

= 25°C. (Note 9)

SYMBOL

PARAMETER

Resolution

No Missing Codes

Transition Noise

CONDITIONS

converTer characTerisTics

The

l

denotes the specifications which apply over the full operating

MIN

l

TYP

MAX

UNITS

Bits

16

0.33

0.65

0.5

1.0

SoftSpans 7 and 6: ±10.24V and ±10V Ranges

SoftSpans 5 and 4: 0V to 10.24V and 0V to 10V Ranges

SoftSpans 3 and 2: ±5.12V and ±5V Ranges

SoftSpans 1 and 0: 0V to 5.12V and 0V to 5V Ranges

(Note 10)

(Note 12)

l

LSB

RMS

LSB

RMS

LSB

RMS

LSB

RMS

1

0.9

550

0.1

LSB

μV

μV/°C

%FS

ppm/°C

INL

DNL

ZSE

FSE

Integral Linearity Error

Zero-Scale Error

Zero-Scale Error Drift

Full-Scale Error

Full-Scale Error Drift

–1

−0.9

−550

−0.1

±0.3

±0.2

±160

±2

±0.025

±2.5

Differential Linearity Error (Note 11)

l

233516f

For more information

www.linear.com/LTC2335-16

3

LTC2335-16

DynaMic accuracy

SYMBOL PARAMETER

SINAD

Signal-to-(Noise +

Distortion) Ratio

The

l

denotes the specifications which apply over the full operating temperature range,

otherwise specifications are at T

A

= 25°C. A

IN

= –1dBFS. (Notes 9, 13)

CONDITIONS

SoftSpans 7 and 6: ±10.24V and ±10V Ranges, f

IN

= 2kHz

SoftSpans 5 and 4: 0V to 10.24V and 0V to 10V Ranges, f

IN

= 2kHz

SoftSpans 3 and 2: ±5.12V and ±5V Ranges, f

IN

= 2kHz

SoftSpans 1 and 0: 0V to 5.12V and 0V to 5V Ranges, f

IN

= 2kHz

SoftSpans 7 and 6: ±10.24V and ±10V Ranges, f

IN

= 2kHz

SoftSpans 5 and 4: 0V to 10.24V and 0V to 10V Ranges, f

IN

= 2kHz

SoftSpans 3 and 2: ±5.12V and ±5V Ranges, f

IN

= 2kHz

SoftSpans 1 and 0: 0V to 5.12V and 0V to 5V Ranges, f

IN

= 2kHz

SoftSpans 7 and 6: ±10.24V and ±10V Ranges, f

IN

= 2kHz

SoftSpans 5 and 4: 0V to 10.24V and 0V to 10V Ranges, f

IN

= 2kHz

SoftSpans 3 and 2: ±5.12V and ±5V Ranges, f

IN

= 2kHz

SoftSpans 1 and 0: 0V to 5.12V and 0V to 5V Ranges, f

IN

= 2kHz

SoftSpans 7 and 6: ±10.24V and ±10V Ranges, f

IN

= 2kHz

SoftSpans 5 and 4: 0V to 10.24V and 0V to 10V Ranges, f

IN

= 2kHz

SoftSpans 3 and 2: ±5.12V and ±5V Ranges, f

IN

= 2kHz

SoftSpans 1 and 0: 0V to 5.12V and 0V to 5V Ranges, f

IN

= 2kHz

Alternating Conversions with 18V

P-P

200Hz Sine in ±10.24V

Range, Crosstalk to Any Other Channel

l

MIN

91.8

87.2

89.3

83.8

92.3

87.3

89.5

83.8

TYP

94.3

90.1

92.0

87.0

94.4

90.1

92.0

87.0

–109

–111

–113

–114

MAX

UNITS

dB

SNR

Signal-to-Noise Ratio

THD

Total Harmonic Distortion

–101

–99

–104

–103

dB

MHz

ns

ps

RMS

ns

SFDR

Spurious Free Dynamic

Range

101

99

105

110

112

114

115

–125

7

1

150

3

Channel-to-Channel

Active Crosstalk

–3dB Input Bandwidth

Aperture Delay

Aperture Delay Matching

Aperture Jitter

Transient Response

Full-Scale Step, 0.005% Settling

360

operating temperature range, otherwise specifications are at T

A

= 25°C. (Note 9)

SYMBOL

V

REFIN

PARAMETER

Internal Reference Output Voltage

Internal Reference Temperature Coefficient

Internal Reference Line Regulation

Internal Reference Output Impedance

V

REFIN

REFIN Voltage Range

REFIN Overdriven (Note 7)

(Note 14)

V

DD

= 4.75V to 5.25V

CONDITIONS

inTernal reFerence characTerisTics

The

l

denotes the specifications which apply over the full

MIN

2.043

l

TYP

2.048

5

0.1

20

MAX

2.053

20

UNITS

V

ppm/°C

mV/V

kΩ

1.25

2.2

V

233516f

4

For more information

www.linear.com/LTC2335-16

LTC2335-16

The

l

denotes the specifications which apply over the full

operating temperature range, otherwise specifications are at T

A

= 25°C. (Note 9)

SYMBOL

V

REFBUF

PARAMETER

Reference Buffer Output Voltage

REFBUF Voltage Range

REFBUF Input Impedance

I

REFBUF

REFBUF Load Current

CONDITIONS

REFIN Overdriven, V

REFIN

= 2.048V

REFBUF Overdriven (Notes 7, 15)

V

REFIN

= 0V, Buffer Disabled

V

REFBUF

= 5V, (Notes 15, 16)

V

REFBUF

= 5V, Acquisition or Nap Mode (Note 15)

l

reFerence buFFer characTerisTics

MIN

4.091

2.5

TYP

4.096

13

1.1

0.39

MAX

4.101

5

1.4

UNITS

V

kΩ

mA

The

l

denotes the specifications which apply over the

full operating temperature range, otherwise specifications are at T

A

= 25°C. (Note 9)

SYMBOL

V

IH

V

IL

I

IN

C

IN

V

OH

V

OL

I

OZ

I

SOURCE

I

SINK

V

ID

R

ID

V

ICM

I

ICM

V

OD

V

OCM

I

OZ

PARAMETER

High Level Input Voltage

Low Level Input Voltage

Digital Input Current

Digital Input Capacitance

High Level Output Voltage

Low Level Output Voltage

Hi-Z Output Leakage Current

Output Source Current

Output Sink Current

Differential Input Voltage

On-Chip Input Termination

Resistance

Common-Mode Input Voltage

Common-Mode Input Current

Differential Output Voltage

Common-Mode Output Voltage

Hi-Z Output Leakage Current

V

IN

+ = V

IN

– = 0V to OV

DD

R

L

= 100Ω Differential Termination

R

L

= 100Ω Differential Termination

V

OUT

= 0V to OV

DD

CS

= 0V, V

ICM

= 1.2V

CS

= OV

DD

I

OUT

= –500μA

I

OUT

= 500μA

V

OUT

= 0V to OV

DD

V

OUT

= 0V

V

OUT

= OV

DD

l

OV

DD

– 0.2

l

DigiTal inpuTs anD DigiTal ouTpuTs

CONDITIONS

MIN

l

0.8 • OV

DD

l

TYP

MAX

UNITS

V

CMOS Digital Inputs and Outputs

0.2 • OV

DD

–10

5

0.2

–10

–50

50

200

90

0.3

–10

275

1.1

–10

350

1.2

350

106

10

1.2

600

125

2.2

10

425

1.3

10

V

μA

pF

V

μA

mA

mV

Ω

MΩ

V

μA

mV

V

μA

V

IN

= 0V to OV

DD

l

LVDS Digital Inputs and Outputs

233516f

For more information

www.linear.com/LTC2335-16

5

	LTC2335-16	LTC2335CLX-16#PBF	LTC2335ILX-16#PBF	LTC2335HLX-16#PBF
Description	16-bit, 1msps 8-channel differential ±10.24v input softspan adc with wide input common mode range	IC ADC 16BIT 8CH 1MSPS 48LQFP	IC ADC 16BIT 8CH 1MSPS 48LQFP	IC ADC 16BIT 8CH 1MSPS 48LQFP
Number of digits	-	16	16	16
Sample rate (per second)	-	1M	1M	1M
Number of inputs	-	8	8	8
input type	-	difference	difference	difference
Data interface	-	LVDS - Serial, SPI	LVDS - Serial, SPI	LVDS - Serial, SPI
Configuration	-	MUX-S/H-ADC	MUX-S/H-ADC	MUX-S/H-ADC
Radio - S/H:ADC	-	1：1	1：1	1：1
Number of A/D converters	-	1	1	1
Architecture	-	SAR	SAR	SAR
Reference type	-	outside, inside	outside, inside	outside, inside
Voltage - Power, Analog	-	5V	5V	5V
Voltage - Power, Digital	-	5V	5V	5V
Operating temperature	-	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 125°C
Package/casing	-	48-LQFP	48-LQFP	48-LQFP
Supplier device packaging	-	48-LQFP（7x7）	48-LQFP（7x7）	48-LQFP（7x7）

LTC2335-16

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