FeaTures

n

LTC2324-12

Quad, 12-Bit + Sign,

2Msps/Ch

Simultaneous Sampling ADC

DescripTion

The

LTC

®

2324-12

is a low noise, high speed quad 12-bit

+ sign successive approximation register (SAR) ADC with

differential inputs and wide input common mode range.

Operating from a single 3.3V or 5V supply, the LTC2324-

12 has an 8V

P-P

differential input range, making it ideal

for applications which require a wide dynamic range with

high common mode rejection. The LTC2324-12 achieves

±0.5LSB INL typical, no missing codes at 12 bits and

78dB SNR.

The LTC2324-12 has an onboard low drift (20ppm/°C max)

2.048V or 4.096V temperature-compensated reference.

The LTC2324-12 also has a high speed SPI-compatible

serial interface that supports CMOS or LVDS. The fast

2Msps per channel throughput with no latency makes the

LTC2324-12 ideally suited for a wide variety of high speed

applications. The LTC2324-12 dissipates only 40mW per

channel and offers nap and sleep modes to reduce the

power consumption to 26μW for further power savings

during inactive periods.

L,

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

ThinSOT is a trademark of Analog Devices, Inc. All other trademarks are the property of their

respective owners.

n

2Msps/Ch Throughput Rate

Four Simultaneously Sampling Channels

Guaranteed 12-Bit, No Missing Codes

8V

P-P

Differential Inputs with Wide Input

Common Mode Range

78dB SNR (Typ) at f

IN

= 500kHz

–88dB THD (Typ) at f

IN

= 500kHz

Guaranteed Operation to 125°C

Single 3.3V or 5V Supply

Low Drift (20ppm/°C Max) 2.048V or 4.096V

Internal Reference

1.8V to 2.5V I/O Voltages

CMOS or LVDS SPI-Compatible Serial I/O

Power Dissipation 40mW/Ch (Typ)

Small 52-Lead (7mm × 8mm) QFN Package

applicaTions

n

High Speed Data Acquisition Systems

Communications

Optical Networking

Multiphase Motor Control

Typical applicaTion

TRUE DIFFERENTIAL INPUTS

NO CONFIGURATION REQUIRED

IN

+

,

IN

–

V

DD

ARBITRARY

V

DD

DIFFERENTIAL

A

IN1+

S/H

A

IN1–

A

IN2+

S/H

A

IN2–

UNIPOLAR

V

DD

GND

O

VDD

12-BIT + SIGN

SAR ADC

12-BIT + SIGN

SAR ADC

LTC2324-12

V

DD

BIPOLAR

V

DD

A

IN3+

S/H

A

IN3–

A

IN4+

S/H

A

IN4–

REF

FOUR SIMULTANEOUS

SAMPLING CHANNELS

REFOUT1

1µF

12-BIT + SIGN

SAR ADC

12-BIT + SIGN

SAR ADC

REFOUT2

10µF

CMOS/LVDS

SDR/DDR

REFBUFEN

SDO1

SDO2

SDO3

SDO4

CLKOUT

SCK

CNV

SAMPLE

CLOCK

10µF

3.3V OR 5V

1µF

1.8V TO 2.5V

0

32k Point FFT f

SMPL

= 2Msps,

f

IN

= 500kHz

SNR = 78.5dB

THD = –87.8dB

–20 SINAD = 78.2dB

SFDR = 95.9dB

–40

–60

–80

–100

–120

–140

0

0.2

0.4

0.6

FREQUENCY (MHz)

0.8

1

0V

REFOUT3 REFOUT4

10µF

232412 TA01a

AMPLITUDE (dBFS)

10µF

232412 TA01b

232412fa

For more information

www.linear.com/LTC2324-12

1

LTC2324-12

absoluTe MaxiMuM raTings

(Notes 1, 2)

pin conFiguraTion

TOP VIEW

REFBUFEN

DNC/SCK

–

CMOS/LVDS

SCK/SCK

+

40 DNC/SDOD

–

39 SDO4/SDOD

+

38 GND

37 OV

DD

36 DNC/SDOC

–

35 SDO3/SDOC

+

53

GND

34

CLKOUTEN/CLKOUT

–

33 CLKOUT/CLKOUT

+

32 GND

31 OV

DD

30 DNC/SDOB

–

29 SDO2/SDOB

+

28 DNC/SDOA

–

27 SDO1/SDOA

+

15 16 17 18 19 20 21 22 23 24 25 26

SDR/DDR

REFOUT1

CNV

GND

NC

V

DD

NC

V

DD

REFOUT4

GND

V

DD

V

DD

NC

Supply Voltage (V

DD

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

Supply Voltage (OV

DD

) ................................................3V

Analog Input Voltage

A

IN+

, A

IN –

(Note 3) ................... –0.3V to (V

DD

+ 0.3V)

REFOUT1,2,3,4........................ .–0.3V to (V

DD

+ 0.3V)

CNV........................................

–0.3V to (OV

DD

+ 0.3V)

Digital Input Voltage

(Note 3) .......................... (GND – 0.3V) to (OV

DD

+ 0.3V)

Digital Output Voltage

(Note 3) .......................... (GND – 0.3V) to (OV

DD

+ 0.3V)

Operating Temperature Range

LTC2324C ................................................ 0°C to 70°C

LTC2324I .............................................–40°C to 85°C

LTC2324H .......................................... –40°C to 125°C

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

52 51 50 49 48 47 46 45 44 43 42 41

A

IN4–

1

A

IN4+

2

GND 3

A

IN3–

4

A

IN3+

5

REFOUT3 6

GND 7

REF 8

REFOUT2 9

A

IN2–

10

A

IN2+

11

GND 12

A

IN1–

13

A

IN1+

14

UKG PACKAGE

52-LEAD (7mm

×

8mm) PLASTIC QFN

T

JMAX

= 150°C,

θ

JA

= 31°C/W,

θ

JC

= 2°C/W

EXPOSED PAD (PIN 53) IS GND, MUST BE SOLDERED TO PCB

orDer inForMaTion

LEAD FREE FINISH

LTC2324CUKG-12#PBF

LTC2324IUKG-12#PBF

LTC2324HUKG-12#PBF

TAPE AND REEL

LTC2324CUKG-12#TRPBF

LTC2324IUKG-12#TRPBF

LTC2324HUKG-12#TRPBF

http://www.linear.com/product/LTC2324-12#orderinfo

PART MARKING*

LTC2324UKG-12

PACKAGE DESCRIPTION

52-Lead (7mm

×

8mm) Plastic QFN

52-Lead (7mm

×

8mm) Plastic QFN

52-Lead (7mm

×

8mm) Plastic QFN

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/

For more information on tape and reel specifications, go to:

http://www.linear.com/tapeandreel/.

Some packages are available in 500 unit reels through

designated sales channels with #TRMPBF suffix.

2

232412fa

For more information

www.linear.com/LTC2324-12

LTC2324-12

The

l

denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at T

A

= 25°C (Note 4).

SYMBOL

V

IN+

V

IN–

V

IN+

– V

IN–

V

CM

I

IN

C

IN

CMRR

V

IHCNV

V

ILCNV

I

INCNV

PARAMETER

Absolute Input Range (A

IN+

to A

IN–

)

Absolute Input Range (A

IN+

to A

IN–

)

Input Differential Voltage Range

Common Mode Input Range

Analog Input DC Leakage Current

Analog Input Capacitance

Input Common Mode Rejection Ratio

CNV

High Level Input Voltage

CNV

Low Level Input Voltage

CNV

Input Current

CONDITIONS

(Note 5)

V

IN

= V

IN+

– V

IN–

V

CM

= (V

IN+

– V

IN–

)/2

l

elecTrical characTerisTics

MIN

0

–REFOUT1,2,3,4

0

–1

TYP

MAX

V

DD

V

DD

REFOUT1,2,3,4

V

DD

1

f

IN

= 500kHz

l

10

102

1.5

–10

0.5

10

UNITS

V

μA

pF

dB

V

μA

converTer characTerisTics

SYMBOL PARAMETER

Resolution

No Missing Codes

Transition Noise

INL

DNL

BZE

FSE

Integral Linearity Error

Differential Linearity Error

Bipolar Zero-Scale Error

Bipolar Zero-Scale Error Drift

Bipolar Full-Scale Error

Bipolar Full-Scale Error Drift

(Note 7)

(Note 6)

CONDITIONS

The

l

denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at T

A

= 25°C (Note 4).

MIN

l

TYP

MAX

UNITS

Bits

12

0.2

–1

–0.25

–0.2

–0.5

0

±0.1

0

0.01

0

15

1

0.25

0.2

0.5

LSB

RMS

LSB

LSB/°C

LSB

ppm/°C

l

V

REFOUT1,2,3,4

= 4.096V (REFBUFEN Grounded) (Note 7)

V

REFOUT1,2,3,4

= 4.096V (REFBUFEN Grounded)

l

DynaMic accuracy

SYMBOL PARAMETER

SINAD

SNR

THD

SFDR

The

l

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

otherwise specifications are at T

A

= 25°C and A

IN

= –1dBFS (Notes 4, 8).

CONDITIONS

l

MIN

74

75

TYP

78

78.5

–88

MAX

UNITS

dB

Signal-to-(Noise + Distortion) Ratio f

IN

= 500kHz, V

REFOUT1,2,3,4

= 4.096V, Internal Reference

f

IN

= 500kHz, V

REFOUT1,2,3,4

= 5V, External Reference

Signal-to-Noise Ratio

Total Harmonic Distortion

Spurious Free Dynamic Range

–3dB Input Bandwidth

Aperture Delay

Aperture Delay Matching

Aperture Jitter

Transient Response

Full-Scale Step

f

IN

= 500kHz, V

REFOUT1,2,3,4

= 4.096V, Internal Reference

f

IN

= 500kHz, V

REFOUT1,2,3,4

= 5V, External Reference

f

IN

= 500kHz, V

REFOUT1,2,3,4

= 4.096V, Internal Reference

f

IN

= 500kHz, V

REFOUT1,2,3,4

= 5V, External Reference

f

IN

= 500kHz, V

REFOUT1,2,3,4

= 4.096V, Internal Reference

f

IN

= 500kHz, V

REFOUT1,2,3,4

= 5V, External Reference

l

–77.5

dB

MHz

ps

RMS

ns

232412fa

l

77.5

93

55

500

1

3

For more information

www.linear.com/LTC2324-12

3

LTC2324-12

The

l

denotes the specifications which apply over the

full operating temperature range, otherwise specifications are at T

A

= 25°C (Note 4).

SYMBOL

V

REFOUT1,2,3,4

PARAMETER

Internal Reference Output Voltage

V

REF

Temperature Coefficient

REFOUT1,2,3,4 Output Impedance

V

REFOUT1,2,3,4

Line Regulation

I

REFOUT1,2,3,4

External Reference Current

4.75V < V

DD

< 5.25V

REFBUFEN = 0V

REFOUT1,2,3,4 = 4.096V

REFOUT1,2,3,4 = 2.048V

(Notes 9, 10)

CONDITIONS

4.75V < V

DD

< 5.25V

3.13V < V

DD

< 3.47V

(Note 14)

l

inTernal reFerence characTerisTics

MIN

4.078

2.034

TYP

4.096

2.048

3

0.25

0.3

385

204

MAX

4.115

2.064

20

UNITS

V

ppm/°C

Ω

mV/V

μA

DigiTal inpuTs anD DigiTal ouTpuTs

SYMBOL PARAMETER

CMOS Digital Inputs and Outputs

CMOS/LVDS

= GND

V

IH

V

IL

I

IN

C

IN

V

OH

V

OL

I

OZ

I

SOURCE

I

SINK

V

ID

V

IS

V

OD

V

OS

V

OD_LP

V

OS_LP

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

LVDS Differential Input Voltage

LVDS Common Mode Input Voltage

LVDS Differential Output Voltage

LVDS Common Mode Output Voltage

Low Power LVDS Differential Output Voltage

Low Power LVDS Common Mode Output Voltage

I

O

= –500μA

I

O

= 500μA

V

OUT

= 0V to OV

DD

V

OUT

= 0V

V

OUT

= OV

DD

V

IN

= 0V to OV

DD

CONDITIONS

The

l

denotes the specifications which apply over the

full operating temperature range, otherwise specifications are at T

A

= 25°C (Note 4).

MIN

l

TYP

MAX

UNITS

V

0.8

•

OV

DD

0.2

•

OV

DD

–10

5

OV

DD

– 0.2

0.2

–10

10

V

μA

pF

V

μA

mA

l

LVDS Digital Inputs and Outputs

CMOS/LVDS

= OV

DD

100Ω Differential Termination

OV

DD

= 2.5V

100Ω Differential Termination

OV

DD

= 2.5V

100Ω Differential Termination

OV

DD

= 2.5V

100Ω Differential Termination

OV

DD

= 2.5V

100Ω Differential Termination

OV

DD

= 2.5V

100Ω Differential Termination

OV

DD

= 2.5V

l

240

1

220

0.85

100

0.85

350

1.2

200

1.2

600

1.45

600

1.4

350

1.4

mV

V

mV

V

mV

V

4

232412fa

For more information

www.linear.com/LTC2324-12

LTC2324-12

The

l

denotes the specifications which apply over the full operating temperature

range, otherwise specifications are at T

A

= 25°C (Note 4).

SYMBOL

V

DD

I

VDD

OV

DD

I

OVDD

I

NAP

I

SLEEP

P

D_3.3V

P

D_5V

PARAMETER

Supply Voltage

Supply Current

Supply Voltage

Supply Current

Nap Mode Current

Sleep Mode Current

Power Dissipation

2Msps Sample Rate (C

L

= 5pF)

Conversion Done (I

VDD

)

Sleep Mode (I

VDD

+ I

OVDD

)

V

DD

= 3.3V, 2Msps Sample Rate

Nap Mode

Sleep Mode

V

DD

= 5V, 2Msps Sample Rate

Nap Mode

Sleep Mode

CONDITIONS

5V Operation

3.3V Operation

2Msps Sample Rate (AIN

+

= AIN

–

= 0V)

l

power requireMenTs

MIN

4.75

3.13

TYP

MAX

5.25

3.47

UNITS

V

mA

V

mA

µA

mW

µW

mW

µW

V

mA

µA

mW

µW

mW

µW

31

1.71

4.4

5.3

20

102

18

20

162

27

30

2.37

26

5.3

20

151

52

80

214

52

30

36.5

2.63

8

6.4

90

130

21

288

202

32

424

2.63

31.5

6.4

90

185

56

288

262

66

424

CMOS I/O Mode

CMOS/LVDS

= GND

l

Power Dissipation

LVDS I/O Mode

CMOS/LVDS

= OV

DD

, OV

DD

= 2.5V

OV

DD

I

OVDD

I

NAP

I

SLEEP

P

D_3.3V

P

D_5V

Supply Voltage

Supply Current

Nap Mode Current

Sleep Mode Current

Power Dissipation

1.5Msps Sample Rate (C

L

= 5pF, R

L

= 100Ω)

Conversion Done (I

VDD

)

Sleep Mode (I

VDD

+ I

OVDD

)

V

DD

= 3.3V, 2Msps Sample Rate

Nap Mode

Sleep Mode

V

DD

= 5V, 2Msps Sample Rate

Nap Mode

Sleep Mode

l

Power Dissipation

The

l

denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at T

A

= 25°C (Note 4).

SYMBOL

f

SMPL

t

CYC

t

CONV

t

CNVH

t

ACQUISITION

t

WAKE

t

SCK

t

SCKH

t

SCKL

t

HSDO_SDR

t

DSCKCLKOUT

PARAMETER

Maximum Sampling Frequency

Time Between Conversions

Conversion Time

CNV

High Time

Sampling Aperture

REFOUT1,2,3,4 Wake-Up Time

SCK Period

SCK High Time

SCK Low Time

SDO Data Remains Valid Delay from CLKOUT↓

SCK to CLKOUT Delay

C

L

= 5pF (Note 12)

(Note 12)

(Note 11) t

ACQUISITION

= t

CYC

– t

CONV

C

REFOUT1,2,3,4

= 10µF

(Note 13)

l

aDc TiMing characTerisTics

CONDITIONS

l

MIN

l

TYP

MAX

2

1000

UNITS

Msps

µs

ns

(Note 11) t

CYC

= t

CNVH

+ t

CONV

+ t

READOUT

0.5

220

30

250

50

9.1

4.1

0

2

ns

ms

ns

1.5

4.5

ns

232412fa

CMOS I/O Mode, SDR

CMOS/LVDS

= GND,

SDR/

DDR = GND

For more information

www.linear.com/LTC2324-12

5

参数名称	属性值
类别
厂商名称	ADI(亚德诺半导体)
包装	卷带（TR）
位数	12
采样率（每秒）	2M
输入数	4
输入类型	差分
数据接口	LVDS - 并联，SPI
配置	S/H-ADC
比率 - S/H:ADC	1：1
架构	SAR
参考类型	外部，内部
电压 - 供电，模拟	3.13V ~ 3.47V，5V
电压 - 供电，数字	3.13V ~ 3.47V，5V
特性	同步采样
工作温度	-40°C ~ 125°C
封装/外壳	52-WFQFN 裸露焊盘
供应商器件封装	52-QFN（7x8）
安装类型	表面贴装型
A/D 转换器数	4
基本产品编号	LTC2324

LTC2324HUKG-12#TRPBF

LTC2324HUKG-12#TRPBF概述

LTC2324HUKG-12#TRPBF规格参数

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