LTC1411CG#PBF Linear Technology, LTC1411CG#PBF Datasheet

IC ADC 14BIT 2.5MSPS 36SSOP

LTC1411CG#PBF

Manufacturer Part Number
LTC1411CG#PBF
Description
IC ADC 14BIT 2.5MSPS 36SSOP
Manufacturer
Linear Technology
Datasheet

Specifications of LTC1411CG#PBF

Number Of Bits
14
Sampling Rate (per Second)
2.5M
Data Interface
Parallel
Number Of Converters
1
Power Dissipation (max)
325mW
Voltage Supply Source
Analog and Digital
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
36-SSOP (0.200", 5.30mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
FEATURES
BLOCK DIAGRA
APPLICATIO S
1
2
3
4
5
6
, LTC and LT are registered trademarks of Linear Technology Corporation.
7, 8, 9
Telecommunications
High Speed Data Acquisition
Digital Signal Processing
Multiplexed Data Acquisition Systems
Spectrum Analysis
Imaging Systems
Sample Rate: 2.5Msps
80dB S/(N + D) and 90dB THD at 100kHz f
Single 5V Operation
No Pipeline Delay
Programmable Input Ranges
Low Power Dissipation: 195mW (Typ)
True Differential Inputs Reject Common Mode Noise
Out-of-Range Indicator
Internal or External Reference
Sleep (1 A) and Nap (2mA) Shutdown Modes
36-Pin SSOP Package
REFOUT
REFIN
REFCOM1
REFCOM2
A
A
IN
IN
+
AGND
5k
5k
X1.62/
X1.15
REFERENCE
BANDGAP
2.5V
2k
11
AVM
U
36
SLP
W
35
CONTROL LOGIC
NAP
INTERNAL
CLOCK
34
+
PGA0
14-BIT
ADC
10
33
AVP
PGA1
30
IN
32
14
DVP
CONVST
DRIVERS
OUTPUT
31
DGND
DESCRIPTIO
The LTC
verter in a 36-pin SSOP package, which typically dissi-
pates only 195mW from a single 5V supply. This device
comes complete with a high bandwidth sample-and-
hold, a precision reference, programmable input ranges
and an internally trimmed clock. The ADC can be powered
down with either the Nap or Sleep mode for low power
applications.
The LTC1411 converts either differential or single-ended
inputs and presents data in 2’s complement format.
Maximum DC specs include 2LSB INL and 14-bit no
missing code over temperature. Outstanding dynamic
performance includes 80dB S/(N + D) and 90dB THD at
100kHz input frequency.
The LTC1411 has four programmable input ranges se-
lected by two digital input pins, PGA0 and PGA1. This
provides input spans of 1.8V, 1.27V, 0.9V and 0.64V.
An out-of-the-range signal together with the D13 (MSB)
will indicate whether a signal is over or under the ADC’s
input range. A simple conversion start input and a data
ready signal ease connections to FIFOs, DSPs and micro-
processors.
OGND
BUSY
OV
OTR
D13
D0
DD
29
28
12
25
27
26
1411 BD
®
1411 is a 2.5Msps sampling 14-bit A/D con-
U
14-Bit 2.5Msps ADC
86
80
74
68
62
56
50
44
38
32
26
20
14
10
S/(N + D) and Effective Bits
vs Input Frequency
INPUT FREQUENCY (kHz)
Single Supply
100
1000
LTC1411
1411 TA02
10000
10
14
13
12
11
1
1411f

Related parts for LTC1411CG#PBF

LTC1411CG#PBF Summary of contents

Page 1

... Internal or External Reference Sleep (1 A) and Nap (2mA) Shutdown Modes 36-Pin SSOP Package U APPLICATIO S Telecommunications High Speed Data Acquisition Digital Signal Processing Multiplexed Data Acquisition Systems Spectrum Analysis Imaging Systems , LTC and LT are registered trademarks of Linear Technology Corporation. W BLOCK DIAGRA + – ...

Page 2

LTC1411 ABSOLUTE AXI U RATI GS AVP = DVP = (Notes Supply Voltage (V ) ................................................. 6V DD Analog Input Voltage (Note 3) ... – 0. Digital Input ...

Page 3

ALOG I PUT (Note 5) A SYMBOL PARAMETER V Analog Input Range (Note 9) IN Common Mode Input Range C Analog Input Capacitance IN t Sample-and-Hold Acquisition Time ACQ t Sample-and-Hold Aperture Delay ...

Page 4

LTC1411 CHARACTERISTICS range, otherwise specifications are (Notes 5) (See Figures 11a, 11b) A SYMBOL PARAMETER f Maximum Sampling Frequency SAMPLE(MAX) t Conversion Time CONV t Acquisition Time ACQ t SLP to ...

Page 5

W U TYPICAL PERFOR A CE CHARACTERISTICS Spurious Free Dynamic Range vs Input Frequency 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 –110 10 100 1000 10000 INPUT FREQUENCY (kHz) 1411 G04 Differential Nonlinearity vs Output Code ...

Page 6

LTC1411 W U TYPICAL PERFOR A CE CHARACTERISTICS 4096 Points FFT Plot (1MHz) 0 SINAD = 75dB SFDR = 81dB – 2.5MHz SAMPLE f = 1MHz IN –40 –60 –80 –100 –120 –140 250 500 0 FREQUENCY (kHz) ...

Page 7

CTIO S DVP (Pin 30): 5V Digital Power Supply Pin. Bypass to OGND with tantalum capacitor. DGND (Pin 31): Digital Ground. CONVST (Pin 32): Conversion Start Signal. This active low signal starts ...

Page 8

LTC1411 TEST CIRCUITS Load Circuits for Access Timing (A) Hi AND (B) Hi AND APPLICATIO S I ...

Page 9

U U APPLICATIO S I FOR ATIO 0 SINAD = 78.8dB SFDR = 95dB –20 f SAMPLE f = 100kHz IN –40 –60 –80 –100 –120 –140 0 250 500 750 INPUT FREQUENCY (kHz) Figure 2a. LTC1411 Nonaveraged, 4096 Point ...

Page 10

... DC accuracy and settling time are most critical. The following list is a summary of the op amps that are suitable for driving the LTC1411. More detailed information is available in the Linear Technology Databooks and on the LinearView ® LT 1227: 140MHz Video Current Feedback Amplifier ...

Page 11

U U APPLICATIO S I FOR ATIO LT6203: Dual 100MHz, Low Noise, Low Power Op Amp. Specified at 3V, 5V and 5V supplies. 1.9nV/ Hz noise voltage. Programmable Input Range The LTC1411 has two logic input pins (PGA0 and PGA1) ...

Page 12

LTC1411 U U APPLICATIO S I FOR ATIO Figure 7 shows a typical reference, the LT1019A-2.5 connected to the LTC1411. This will provide an improved drift (equal to the maximum 5ppm the LT1019A-2.5). INPUT RANGE: 0.7V TO 4.3V ...

Page 13

U U APPLICATIO S I FOR ATIO An analog ground plane separate from the logic system ground should be established under and around the ADC. AGND1 (Pins 7 to 9), AVM (Pin 11), DGND (Pin 31) and OGND ...

Page 14

LTC1411 U U APPLICATIO S I FOR ATIO (SAMPLE CONVST t 3 BUSY DATA (N – 1) DATA DB13 TO DB0 Figure 11a. CONVST Starts a Conversion with a Short Active Low Pulse t 5 (SAMPLE N) ...

Page 15

... FLASH SHALL NOT EXCEED .254mm (.010") PER SIDE Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 16

... Single 5V Supply www.linear.com 30 DVP OGND 28 D13 12 14 • 14-BIT • OUTPUT • DATA OUTPUT DRIVERS D0 25 BUSY 27 OTR 26 DGND CONVST 32 31 1411 TA03 2.5MHz CONVERT INPUT INPUT RANGE SELECTION LT/TP 0902 2K • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 2001 1411f ...

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