SAR ADC. LTC2389-16 Datasheet

LTC2389-16 ADC. Datasheet pdf. Equivalent

LTC2389-16 Datasheet
Recommendation LTC2389-16 Datasheet
Part LTC2389-16
Description 2.5Msps SAR ADC
Feature LTC2389-16; LTC2389-16 16-Bit, 2.5Msps SAR ADC with Pin-Configurable Analog Input Range and 96dB SNR Features .
Manufacture Linear Technology
Datasheet
Download LTC2389-16 Datasheet




Linear Technology LTC2389-16
LTC2389-16
16-Bit, 2.5Msps SAR ADC
with Pin-Configurable Analog
Input Range and 96dB SNR
Features
Description
n 2.5Msps Throughput Rate
n ±1LSB INL (Max)
n Guaranteed 16-Bit, No Missing Codes
n Pin-Configurable Analog Input Range:
±4.096V Fully Differential
0V to 4.096V Pseudo-Differential Unipolar
±2.048V Pseudo-Differential Bipolar
n 96.0dB (Fully Differential)/93.5dB (Pseudo
Differential) SNR (Typ) at fIN = 2kHz
n –116dB (Fully Differential)/–112dB (Pseudo
Differential) THD (Typ) at fIN = 2kHz
n Guaranteed Operation to 125°C
n Single 5V Supply
n Internal 20ppm/°C (Max) Reference
n Internal Reference Buffer
n 162.5mW Power Dissipation at 2.5Msps
n No Pipeline Delay, No Cycle Latency
n 1.8V to 5V I/O Voltages
n Parallel and Serial I/O Interface
n 48-pin 7mm × 7mm LQFP and QFN Packages
Applications
n Medical Imaging
n High Speed, Wide Dynamic Range Data Acquisition
n Industrial Process Control
n Instrumentation
n ATE
The LTC®2389-16 is a low noise, high speed 16-bit
successive approximation register (SAR) ADC. Operating
from a single 5V supply, the LTC2389-16 supports pin-
configurable fully differential (±4.096V), pseudo-differ-
ential unipolar (0V to 4.096V), and pseudo-differential
bipolar (±2.048V) analog input ranges, allowing it to
interface with multiple signal chain formats without re-
quiring additional level translation or signal conditioning.
The LTC2389-16 achieves ±1LSB INL (maximum), no
missing codes at 16-bits, and 96.0dB (fully differential)/
93.5dB (pseudo differential) SNR (typical).
The LTC2389-16 includes a precision internal 4.096V
reference, with a guaranteed 0.5% initial accuracy and a
±20ppm/°C (maximum) temperature coefficient, as well
as an internal reference buffer. Fast 2.5Msps throughput
with no cycle latency in the parallel interface modes
makes the LTC2389-16 ideally suited for a wide variety
of high speed applications. An internal oscillator sets
the conversion time, easing external timing considera-
tions. The LTC2389-16 dissipates only 162.5mW at
2.5Msps, while both nap and sleep power-down modes
are provided to further reduce power consumption during
inactive periods.
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.
typical application
5V 1.8V TO 5V
4.096V
0V
0V
4.096V
0V
4.096V
0V
4.096V
0V
2.048V
10µF 0.1µF
0.1µF
10µF
VDD OVDD
PARALLEL OR
SERIAL INTERFACE
16 BIT
10Ω 49.9Ω IN+
+ 1nF
A0
A1
MODE0
MODE1
LTC2389-16
RESET
10Ω 1nF IN
49.9Ω
PD
CS
OB/2C
PD/FD
BUSY
VCM REFOUT REFIN REFSENSE GND
CNVST
SAMPLE
CLOCK
10µF
238916 TA01a
1µF
32k Point FFT fSMPL = 2.5Msps, fIN = 2kHz
0 SNR = 96.0dB
–20 THD = –116dB
SINAD = 96.0dB
–40 SFDR = 117dB
–60
–80
–100
–120
–140
–160
–180
0
250 500 750 1000 1250
FREQUENCY (kHz)
238916 TA01b
238916f
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Linear Technology LTC2389-16
LTC2389-16
Absolute Maximum Ratings (Notes 1, 2)
Supply Voltage (VDD , OVDD)........................................6V
Analog Input Voltage (Note 3)
IN+, IN, REFIN, CNVST......(GND – 0.3V) to (VDD + 0.3V)
Digital Input Voltage
(Note 3)........................... (GND – 0.3V) to (OVDD + 0.3V)
Digital Output Voltage
(Note 3)........................... (GND – 0.3V) to (OVDD + 0.3V)
Power Dissipation............................................... 500mW
Operating Temperature Range
LTC2389C................................................. 0°C to 70°C
LTC2389I..............................................–40°C to 85°C
LTC2389H........................................... –40°C to 125°C
Storage Temperature Range................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec)
LX Package........................................................ 300°C
Pin Configuration
TOP VIEW
TOP VIEW
GND 1
VDD 2
VDD 3
MODE0 4
MODE1 5
OB/2C 6
A0 7
A1 8
D0 9
D1 10
D2 11
D3 12
36 VCM
35 GND
34 CNVST
33 PD
32 RESET
31 CS
30 PD/FD
29 BUSY
28 D15
27 D14
26 D13
25 D12
GND 1
36 VCM
VDD 2
VDD 3
MODE0 4
35 GND
34 CNVST
33 PD
MODE1 5
32 RESET
OB/2C 6 49 31 CS
A0 7 GND 30 PD/FD
A1 8
29 BUSY
D0 9
28 D15
D1 10
27 D14
D2 11
26 D13
D3 12
25 D12
LX PACKAGE
48-LEAD (7mm × 7mm) PLASTIC LQFP
TJMAX = 150°C, θJA = 50°C/W
UK PACKAGE
48-LEAD (7mm × 7mm) PLASTIC QFN
TJMAX = 125°C, θJA = 29°C/W
EXPOSED PAD (PIN 49) IS GND, MUST BE SOLDERED TO PCB
Order Information
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC2389CUK-16#PBF
LTC2389CUK-16#TRPBF LTC2389UK-16
48-Lead 7mm × 7mm Plastic QFN
0°C to 70°C
LTC2389IUK-16#PBF
LTC2389IUK-16#TRPBF LTC2389UK-16
48-Lead 7mm × 7mm Plastic QFN
–40°C to 85°C
LEAD FREE FINISH
TRAY
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC2389CLX-16#PBF
LTC2389CLX-16#PBF LTC2389LX-16
48-Lead 7mm × 7mm Plastic LQFP
0°C to 70°C
LTC2389ILX-16#PBF
LTC2389ILX-16#PBF
LTC2389LX-16
48-Lead 7mm × 7mm Plastic LQFP
–40°C to 85°C
LTC2389HLX-16#PBF
LTC2389HLX-16#PBF LTC2389LX-16
48-Lead 7mm × 7mm Plastic LQFP
–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.
Consult LTC Marketing for information on non-standard lead based finish parts.
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/
238916f
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Linear Technology LTC2389-16
LTC2389-16
Analog Input The l denotes the specifications which apply over the full operating temperature range, otherwise
specifications are at TA = 25°C. (Note 4)
SYMBOL
VIN+
VIN–
VIN+ – VIN–
VCM
IIN
CIN
CMRR
VIHCNVST
VILCNVST
IINCNVST
PARAMETER
Absolute Input Range (IN+)
Absolute Input Range (IN)
CONDITIONS
(Note 5)
Fully Differential (Note 5)
Pseudo-Differential Unipolar (Note 5)
Pseudo-Differential Bipolar (Note 5)
Input Differential Voltage Range
Fully Differential
Pseudo-Differential Unipolar
Pseudo-Differential Bipolar
Input Common Mode Voltage Range Fully Differential
Analog Input Leakage Current
C- and I-Grades
H-Grade
Analog Input Capacitance
Sample Mode
Hold Mode
Input Common Mode Rejection Ratio
CNVST High Level Input Voltage
CNVST Low Level Input Voltage
CNVST Input Current
VIN = 0V to VDD
l
l
l
l
l
l
l
l
l
l
l
l
l
MIN
–0.1
–0.1
–0.1
VREF/2 – 0.1
–VREF
0
–VREF / 2
VREF/2 – 0.1
–1
–2
1.5
TYP
0
VREF / 2
VREF / 2
45
5
70
–25
MAX
VREF + 0.1
VREF + 0.1
0.1
VREF/2 + 0.1
VREF
VVRREFE/F2
VREF/2 + 0.1
1
2
0.5
–60
UNITS
V
V
V
V
V
V
V
V
µA
µA
pF
pF
dB
V
V
µA
C onverter Characteristics The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 4)
SYMBOL
PARAMETER
Resolution
No Missing Codes
Transition Noise
INL Integral Linearity Error
DNL Differential Linearity Error
ZSE Zero-Scale Error
Zero-Scale Error Drift
FSE Full-Scale Error
Full-Scale Error Drift
CONDITIONS
Fully Differential
Pseudo-Differential Unipolar
Pseudo-Differential Bipolar
Fully Differential (Note 6)
Pseudo-Differential Unipolar (Note 6)
Pseudo-Differential Bipolar (Note 6)
Fully Differential
Pseudo-Differential Unipolar
Pseudo-Differential Bipolar
Fully Differential (Note 7)
Pseudo-Differential Unipolar (Note 7)
Pseudo-Differential Bipolar (Note 7)
External Reference (Note 7)
Internal Reference (Note 7)
MIN
l 16
l 16
l –1
l –1
l –1
l –0.6
l –0.7
l –0.7
l –3
l –4
l –4
l
TYP
0.19
0.38
0.38
±0.3
±0.3
±0.3
±0.1
±0.1
±0.1
0
0
0
±0.05
±5
MAX UNITS
Bits
Bits
LSBRMS
LSBRMS
LSBRMS
1 LSB
1 LSB
1 LSB
0.6 LSB
0.7 LSB
0.7 LSB
3 LSB
4 LSB
4 LSB
ppm/°C
0.15 %
0.15 %
ppm/°C
238916f
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