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Linear Technology Electronic Components Datasheet

LTC2182IUP Datasheet

Low Power Dual ADCs

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FEATURES
n Two-Channel Simultaneously Sampling ADC
n 77dB SNR
n 90dB SFDR
n Low Power: 160mW/115mW/78mW Total
80mW/58mW/39mW per Channel
n Single 1.8V Supply
n CMOS, DDR CMOS, or DDR LVDS Outputs
n Selectable Input Ranges: 1VP-P to 2VP-P
n 550MHz Full Power Bandwidth S/H
n Optional Data Output Randomizer
n Optional Clock Duty Cycle Stabilizer
n Shutdown and Nap Modes
n Serial SPI Port for Configuration
n 64-Pin (9mm × 9mm) QFN Package
APPLICATIONS
n Communications
n Cellular Base Stations
n Software Defined Radios
n Portable Medical Imaging
n Multi-Channel Data Acquisition
n Nondestructive Testing
LTC2182/LTC2181/LTC2180
16-Bit, 65Msps/
40Msps/25Msps Low Power
Dual ADCs
DESCRIPTION
The LTC®2182/LTC2181/LTC2180 are two-channel si-
multaneous sampling 16-bit A/D converters designed for
digitizing high frequency, wide dynamic range signals. They
are perfect for demanding communications applications
with AC performance that includes 77dB SNR and 90dB
spurious free dynamic range (SFDR). Ultralow jitter of
0.07psRMS allows undersampling of IF frequencies with
excellent noise performance.
DC specs include ±2LSB INL (typ), ±0.5LSB DNL (typ)
and no missing codes over temperature. The transition
noise is 3.3LSBRMS.
The digital outputs can be either full rate CMOS, Double
Data Rate CMOS, or Double Data Rate LVDS. A separate
output power supply allows the CMOS output swing to
range from 1.2V to 1.8V.
The ENC+ and ENCinputs may be driven differentially
or single-ended with a sine wave, PECL, LVDS, TTL, or
CMOS inputs. An optional clock duty cycle stabilizer al-
lows high performance at full speed for a wide range of
clock duty cycles.
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.
TYPICAL APPLICATION
1.8V
VDD
CH 1
ANALOG
S/H
INPUT
16-BIT
ADC CORE
CH 2
ANALOG
INPUT
65MHz
CLOCK
S/H
16-BIT
ADC CORE
CLOCK
CONTROL
GND
1.8V
OVDD
OUTPUT
DRIVERS
D1_15
D1_0
D2_15
D2_0
CMOS,
DDR CMOS
OR DDR LVDS
OUTPUTS
OGND
218210 TA01a
2-Tone FFT, fIN = 70MHz and 69MHz
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
0
10
20
FREQUENCY (MHz)
30
218210 TA01b
218210f
1
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Linear Technology Electronic Components Datasheet

LTC2182IUP Datasheet

Low Power Dual ADCs

No Preview Available !

LTC2182/LTC2181/LTC2180
ABSOLUTE MAXIMUM RATINGS (Notes 1, 2)
Supply Voltages (VDD, OVDD)....................... –0.3V to 2V
Analog Input Voltage (AIN+, AIN–,
PAR/SER, SENSE) (Note 3).......... –0.3V to (VDD + 0.2V)
Digital Input Voltage (ENC+, ENC, CS,
SDI, SCK) (Note 4).................................... –0.3V to 3.9V
SDO (Note 4)............................................. –0.3V to 3.9V
Digital Output Voltage ................ –0.3V to (OVDD + 0.3V)
Operating Temperature Range
LTC2182C, LTC2181C, LTC2180C............. 0°C to 70°C
LTC2182I, LTC2181I, LTC2180I ............–40°C to 85°C
Storage Temperature Range .................. –65°C to 150°C
PIN CONFIGURATIONS
FULL-RATE CMOS OUTPUT MODE
TOP VIEW
DOUBLE DATA RATE CMOS OUTPUT MODE
TOP VIEW
VDD 1
VCM1 2
GND 3
AIN1+ 4
AIN1– 5
GND 6
48 D1_5
47 D1_4
46 D1_3
45 D1_2
44 D1_1
43 D1_0
VDD 1
VCM1 2
GND 3
AIN1+ 4
AIN1– 5
GND 6
48 D1_4_5
47 DNC
46 D1_2_3
45 DNC
44 D1_0_1
43 DNC
REFH 7
42 OVDD
REFH 7
42 OVDD
REFL 8
65
41 OGND
REFL 8
65
41 OGND
REFH 9
GND
40 CLKOUT+
REFH 9
GND
40 CLKOUT+
REFL 10
39 CLKOUT
REFL 10
39 CLKOUT
PAR/SER 11
AIN2+ 12
AIN2– 13
GND 14
38 D2_15
37 D2_14
36 D2_13
35 D2_12
PAR/SER 11
AIN2+ 12
AIN2– 13
GND 14
38 D2_14_15
37 DNC
36 D2_12_13
35 DNC
VCM2 15
VDD 16
34 D2_11
33 D2_10
VCM2 15
VDD 16
34 D2_10_11
33 DNC
UP PACKAGE
64-LEAD (9mm × 9mm) PLASTIC QFN
TJMAX = 150°C, θJA = 28°C/W
EXPOSED PAD (PIN 65) IS GND, MUST BE SOLDERED TO PCB
UP PACKAGE
64-LEAD (9mm × 9mm) PLASTIC QFN
TJMAX = 150°C, θJA = 28°C/W
EXPOSED PAD (PIN 65) IS GND, MUST BE SOLDERED TO PCB
218210f
2


Part Number LTC2182IUP
Description Low Power Dual ADCs
Maker Linear Technology
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