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LTC2389-16 Dataheets PDF



Part Number LTC2389-16
Manufacturers Linear Technology
Logo Linear Technology
Description 2.5Msps SAR ADC
Datasheet LTC2389-16 DatasheetLTC2389-16 Datasheet (PDF)

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.

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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 pinconfigurable fully differential (±4.096V), pseudo-differential unipolar (0V to 4.096V), and pseudo-differential bipolar (±2.048V) analog input ranges, allowing it to interface with multiple signal chain formats without requiring 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 considerations. 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 AMPLITUDE (dBFS) 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 1 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 48 GND 47 VDD 46 VDD 45 VDD 44 GND 43 IN+ 42 IN– 41 GND 40 VDD 39 REFSENSE 38 REFIN 37 REFOUT 37 REFOUT 38 REFIN 40 VDD 39 REFSENSE 41 GND IIGNNN–+D 45 VDD 46 VDD 47 VDD 48 GND 44 43 42 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 D4 13 D5 14 D6 15 D7 16 GND 17 OVDD 18 VDD 19 GND 20 D8 21 D9/SDI 22 D10/SDO 23 D11/SCK 24 D4 13 D5 14 D6 15 D7 16 GND 17 OVDD 18 VDD 19 GND 20 D8 21 D9/SDI 22 D10/SDO 23 D11/SCK 24 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.


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