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LTC2391CUK-16#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24
LTC2391-16
1
239116fa
TYPICAL APPLICATION
DESCRIPTION
16-Bit, 250ksps SAR ADC
with 94dB SNR
The LTC
®
2391-16 is a low noise, high speed 16-bit suc-
cessive approximation register (SAR) ADC. Operating
from a single 5V supply, the LTC2391-16 supports a large
±4.096V fully differential input range, making it ideal for
high performance applications which require maximum
dynamic range. The LTC2391-16 achieves ±2LSB INL
max, no missing codes at 16-bits and 94dB SNR (typ).
The LTC2391-16 includes a precision internal reference
with a guaranteed 0.5% initial accuracy and a ±20ppm/°C
(max) temperature coeffi cient. Fast 250ksps throughput
with no cycle latency in both parallel and serial interface
modes makes the LTC2391-16 ideally suited for a wide
variety of high speed applications. An internal oscillator
sets the conversion time, easing external timing con-
siderations. The LTC2391-16 dissipates only 95mW at
250ksps, while both nap and sleep power-down modes are
provided to further reduce power during inactive periods.
FEATURES
APPLICATIONS
n
250ksps Throughput Rate
n
±2LSB INL (Max)
n
Guaranteed 16-Bit No Missing Codes
n
94dB SNR (Typ) at f
IN
= 20kHz
n
Guaranteed Operation to 125°C
n
Single 5V Supply
n
1.8V to 5V I/O Voltages
n
95mW Power Dissipation
n
±4.096V Differential Input Range
n
Internal Reference (20ppm/°C Max)
n
No Pipeline Delay, No Cycle Latency
n
Parallel and Serial Interface
n
Internal Conversion Clock
n
48-Lead 7mm × 7mm LQFP and QFN Packages
n
Medical Imaging
n
High Speed Data Acquisition
n
Digital Signal Processing
n
Industrial Process Control
n
Instrumentation
n
ATE
16k Point FFT f
S
= 250ksps,
f
IN
= 20kHz
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
5V
0.1μF10μF
5V
0.1μF10μF
SER/PAR
BYTESWAP
OB/2C
CS
RD
BUSY
PARALLEL
OR
SERIAL
INTERFACE
OGND
239116 TA01
IN
–
IN
+
2200pF
249Ω
249Ω
ANALOG INPUT
0V TO 4.096V
SINGLE-ENDED-
TO-DIFFERENTIAL
DRIVER
GNDRESETCNVST PD
SAMPLE CLOCK
REFOUTREFIN
AVP DVP
LTC2391-16
OVP
1.8V TO 5V
16 BIT
VCM
1μF10μF
4.7μF
LT6350
FREQUENCY (kHz)
0
–180
AMPLITUDE (dBFS)
–160
–120
–100
–80
50
100
125
0
239116 G08
–140
25 75
–60
–40
–20
SNR = 94dB
THD –103dB
SINAD = 93.5dB
SFDR = 104dB
LTC2391-16
2
239116fa
Supply Voltage (V
AVP
, V
DVP
, V
OVP
) ..........................6.0V
Analog Input Voltage (Note 3)
IN
+
, IN
–
, REFIN, CNVST .. (GND – 0.3V) to (V
AVP
+ 0.3V)
Digital Input Voltage ........(GND – 0.3V) to (V
OVP
+ 0.3V)
Digital Output Voltage .....(GND – 0.3V) to (V
OVP
+ 0.3V)
Power Dissipation ...............................................500mW
(Notes 1, 2)
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC2391CUK-16#PBF LTC2391CUK-16#TRPBF LTC2391UK-16 48-Lead 7mm × 7mm Plastic QFN 0°C to 70°C
LTC2391IUK-16#PBF LTC2391IUK-16#TRPBF LTC2391UK-16 48-Lead 7mm × 7mm Plastic QFN –40°C to 85°C
LEAD FREE FINISH TRAY PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC2391CLX-16#PBF LTC2391CLX-16#PBF LTC2391LX-16 48-Lead 7mm × 7mm Plastic LQFP 0°C to 70°C
LTC2391ILX-16#PBF LTC2391ILX-16#PBF LTC2391LX-16 48-Lead 7mm × 7mm Plastic LQFP –40°C to 85°C
LTC2391HLX-16#PBF LTC2391HLX-16#PBF LTC2391LX-16 48-Lead 7mm × 7mm Plastic LQFP –40°C to 125°C
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi ed by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based fi nish parts.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifi cations, go to:
http://www.linear.com/tapeandreel/
ABSOLUTE MAXIMUM RATINGS
TOP VIEW
49
GND
UK PACKAGE
48-LEAD (7mm s 7mm) PLASTIC QFN
GND
1
AVP 2
DVP 3
SER/PAR 4
GND 5
OB/2C 6
GND
7
BYTESWAP 8
D0 9
D1 10
D2 11
D3 12
36 VCM
35 GND
34 CNVST
33 PD
32 RESET
31 CS
30 RD
29 BUSY
28 D15
27 D14
26 D13
25 D12
48 GND
47 AVP
46 AVP
45 AVP
44 GND
43 IN
+
42 IN
–
41 GND
40 AVP
39 REFSENSE
38 REFIN
37 REFOUT
D4
13
D5 14
D6 15
D7 16
OGND
17
OVP 18
DVP
19
GND
20
D8 21
D9/SDIN 22
D10/SDOUT 23
D11/SCLK 24
T
JMAX
= 125°C, θ
JA
= 29°C/W
EXPOSED PAD (PIN 49) IS GND, MUST BE SOLDERED TO PCB
1
2
3
4
5
6
7
8
9
10
11
12
36
35
34
33
32
31
30
29
28
27
26
25
GND
AVP
DVP
SER/PAR
GND
OB/2C
GND
BYTESWAP
D0
D1
D2
D3
13
14
15
16
17
18
19
20
21
22
23
24
D4
D5
D6
D7
OGND
OVP
DVP
GND
D8
D9/SDIN
D10/SDOUT
D11/SCLK
48
47
46
45
44
43
42
41
40
39
38
37
GND
AVP
AVP
AVP
GND
IN
+
IN
–
GND
AVP
REFSENSE
REFIN
REFOUT
VCM
GND
CNVST
PD
RESET
CS
RD
BUSY
D15
D14
D13
D12
TOP VIEW
LX PACKAGE
48-LEAD (7mm s 7mm) PLASTIC LQFP
T
JMAX
= 150°C, θ
JA
= 55°C/W
PIN CONFIGURATION
Operating Temperature Range
LTC2391C ................................................ 0°C to 70°C
LTC2391I.............................................. –40°C to 85°C
LTC2391H .......................................... –40°C to 125°C
Storage Temperature Range ................... –65°C to 150°C
LTC2391-16
3
239116fa
ANALOG INPUT
The l denotes the specifi cations which apply over the full operating temperature range, otherwise
specifi cations are at T
A
= 25°C. (Note 4)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
+
Absolute Input Range (IN
+
) (Note 5)
l
–0.05 AVP V
V
IN
–
Absolute Input Range (IN
–
) (Note 5)
l
–0.05 AVP V
V
IN
+
– V
IN
–
Input Differential Voltage Range V
IN
= V
IN
+
– V
IN
–
l
–V
REF
V
REF
V
V
CM
Common Mode Input Range
l
V
REF
/2 – 0.05 V
REF
/2 V
REF
/2 + 0.05 V
I
IN
Analog Input Leakage Current
l
±1 μA
C
IN
Analog Input Capacitance Sample Mode
Hold Mode
45
5
pF
pF
CMRR Input Common Mode Rejection Ratio 70 dB
CONVERTER CHARACTERISTICS
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. (Note 4)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Resolution
l
16 Bits
No Missing Codes
l
16 Bits
Transition Noise 0.3 LSB
RMS
INL Integral Linearity Error (Note 6)
l
–2 ±1 2 LSB
DNL Differential Linearity Error
l
–1 1 LSB
BZE Bipolar Zero Error (Note 7)
l
–7 7 LSB
Bipolar Zero Error Drift 1 ppm/°C
FSE Bipolar Full-Scale Error External Reference
Internal Reference (Note 7)
l
0.14
0.1
%
%
Bipolar Full-Scale Error Drift ±10 ppm/°C
DYNAMIC ACCURACY
The l denotes the specifi cations which apply over the full operating temperature range,
otherwise specifi cations are at T
A
= 25°C. A
IN
= –1dBFS (Notes 4, 8)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
SINAD Signal-to-(Noise + Distortion) Ratio f
IN
= 20kHz
l
90.5 93.5 dB
SNR Signal-to-Noise Ratio f
IN
= 20kHz
l
91 94 dB
THD Total Harmonic Distortion f
IN
= 20kHz, First 5 Harmonics
l
–103 –94 dB
SFDR Spurious-Free Dynamic Range f
IN
= 20kHz 104 dB
–3dB Input Bandwidth 50 MHz
Aperture Delay 0.5 ns
Aperture Jitter 7ps
RMS
Transient Response Full-Scale Step 60 ns
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24

LTC2391CUK-16#PBF

Mfr. #:
Buy LTC2391CUK-16#PBF
Manufacturer:
Analog Devices Inc.
Description:
Analog to Digital Converters - ADC 5V 16-bit 250Ksps Int Ref Parallel / Serial SAR ADC in QFN-48
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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