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Linear Technology Electronic Components Datasheet

LTC2171IUKG-12 Datasheet

Low Power Quad ADC

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LTC2172-12/
LTC2171-12/LTC2170-12
12-Bit, 65Msps/40Msps/
25Msps Low Power Quad ADCs
Features
Description
n 4-Channel Simultaneous Sampling ADC
n 71dB SNR
n 90dB SFDR
n Low Power: 306mW/198mW/160mW Total,
77mW/50mW/40mW per Channel
n Single 1.8V Supply
n Serial LVDS Outputs: One or Two Bits per Channel
n Selectable Input Ranges: 1VP-P to 2VP-P
n 800MHz Full Power Bandwidth Sample-and-Hold
n Shutdown and Nap Modes
n Serial SPI Port for Configuration
n Pin-Compatible 14-Bit and 12-Bit Versions
n 52-Pin (7mm × 8mm) QFN Package
Applications
n Communications
n Cellular Base Stations
n Software Defined Radios
n Portable Medical Imaging
n Multichannel Data Acquisition
n Nondestructive Testing
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.
The LTC®2172-12/LTC2171-12/LTC2170-12 are 4-channel,
simultaneous sampling 12-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 71dB SNR and 90dB
spurious free dynamic range (SFDR). An ultralow jitter of
0.15psRMS allows undersampling of IF frequencies with
excellent noise performance.
DC specifications include ±0.3LSB INL (typ), ±0.1LSB
DNL (typ) and no missing codes over temperature. The
transition noise is a low 0.3LSBRMS.
The digital outputs are serial LVDS to minimize the num-
ber of data lines. Each channel outputs two bits at a time
(2-lane mode) or one bit at a time (1-lane mode). The LVDS
drivers have optional internal termination and adjustable
output levels to ensure clean signal integrity.
The ENC+ and ENCinputs may be driven differentially
or single-ended with a sine wave, PECL, LVDS, TTL or
CMOS inputs. An internal clock duty cycle stabilizer al-
lows high performance at full speed for a wide range of
clock duty cycles.
Typical Application
CHANNEL 1
ANALOG
S/H
INPUT
1.8V
VDD
12-BIT
ADC CORE
1.8V
OVDD
CHANNEL 2
ANALOG
S/H
INPUT
CHANNEL 3
ANALOG
S/H
INPUT
12-BIT
ADC CORE
12-BIT
ADC CORE
DATA
SERIALIZER
CHANNEL 4
ANALOG
S/H
INPUT
12-BIT
ADC CORE
ENCODE
INPUT
PLL
GND
OGND
OUT1A
OUT1B
OUT2A
OUT2B
OUT3A
OUT3B
OUT4A
OUT4B
DATA
CLOCK
OUT
FRAME
SERIALIZED
LVDS
OUTPUTS
217212 TA01
LTC2172-12, 65Msps,
2-Tone FFT, fIN = 70MHz and 75MHz
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
0
10
20
FREQUENCY (MHz)
30
217212 TA01b
21721012fb
1


Linear Technology Electronic Components Datasheet

LTC2171IUKG-12 Datasheet

Low Power Quad ADC

No Preview Available !

LTC2172-12/
LTC2171-12/LTC2170-12
Absolute Maximum Ratings
(Notes 1 and 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
LTC2172C, LTC2171C, LTC2170C.............. 0°C to 70°C
LTC2172I, LTC2171I, LTC2170I.............–40°C to 85°C
Storage Temperature Range................... –65°C to 150°C
Pin Configuration
TOP VIEW
52 51 50 49 48 47 46 45 44 43 42 41
AIN1+ 1
AIN1– 2
40 OUT2A+
39 OUT2A
VCM12 3
38 OUT2B+
AIN2+ 4
AIN2– 5
37 OUT2B
36 DCO+
REFH 6
35 DCO
REFH 7
53
34 OVDD
REFL 8
GND
33 OGND
REFL 9
32 FR+
AIN3+ 10
AIN3– 11
VCM34 12
AIN4+ 13
AIN4– 14
31 FR
30 OUT3A+
29 OUT3A
28 OUT3B+
27 OUT3B
15 16 17 18 19 20 21 22 23 24 25 26
UKG PACKAGE
52-LEAD (7mm × 8mm) PLASTIC QFN
TJMAX = 150°C, θJA = 28°C/W
EXPOSED PAD (PIN 53) IS GND, MUST BE SOLDERED TO PCB
Order Information
LEAD FREE FINISH
TAPE AND REEL
PART MARKING* PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC2172CUKG-12#PBF LTC2172CUKG-12#TRPBF LTC2172UKG-12 52-Lead (7mm × 8mm) Plastic QFN
0°C to 70°C
LTC2172IUKG-12#PBF LTC2172IUKG-12#TRPBF LTC2172UKG-12 52-Lead (7mm × 8mm) Plastic QFN
–40°C to 85°C
LTC2171CUKG-12#PBF LTC2171CUKG-12#TRPBF LTC2171UKG-12 52-Lead (7mm × 8mm) Plastic QFN
0°C to 70°C
LTC2171IUKG-12#PBF LTC2171IUKG-12#TRPBF LTC2171UKG-12 52-Lead (7mm × 8mm) Plastic QFN
–40°C to 85°C
LTC2170CUKG-12#PBF LTC2170CUKG-12#TRPBF LTC2170UKG-12 52-Lead (7mm × 8mm) Plastic QFN
0°C to 70°C
LTC2170IUKG-12#PBF LTC2170IUKG-12#TRPBF LTC2170UKG-12 52-Lead (7mm × 8mm) Plastic QFN
–40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
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/
2
21721012fb


Part Number LTC2171IUKG-12
Description Low Power Quad ADC
Maker Linear Technology
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LTC2171IUKG-12 Datasheet PDF






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