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Linear Technology Electronic Components Datasheet

LTC2159 Datasheet

Low Power ADC

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Features
n 77dB SNR
n 90dB SFDR
n Low Power: 43mW
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 48-Lead (7mm × 7mm) QFN Package
Applications
n Communications
n Cellular Base Stations
n Software Defined Radios
n Portable Medical Imaging
n Multichannel Data Acquisition
n Nondestructive Testing
LTC2159
16-Bit, 20Msps
Low Power ADC
Description
The LTC®2159 is a sampling 16-bit A/D converter designed
for digitizing high frequency, wide dynamic range signals.
It is 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 3.2LSBRMS.
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
ANALOG
INPUT
S/H
16-BIT
ADC CORE
20MHz
CLOCK
2159 TA01a
CLOCK
CONTROL
GND
1.8V
OVDD
OUTPUT
DRIVERS
OGND
D15
CMOS
DDR CMOS OR
DDR LVDS
D0 OUTPUTS
Integral Non-Linearity (INL)
4.0
3.0
2.0
1.0
0
–1.0
–2.0
–3.0
–4.0
0
16384 32768 49152 65536
OUTPUT CODE
2159 TA01b
2159f
1


Linear Technology Electronic Components Datasheet

LTC2159 Datasheet

Low Power ADC

No Preview Available !

LTC2159
Absolute Maximum Ratings (Notes 1, 2)
Supply
Analog
VInopltuatgVeoslt(aVgDeD(,AOINVD+,DA)..IN....,..P..A..R.../.S..E..R...,.
–0.3V to
SENSE)
2V
Dig(iNtaoltIen3p)u..t..V..o..l.t.a..g..e..(..E..N..C...+.,..E..N..C....,–C0S.3,VSDtoI,(SVCDKD)+ 0.2V)
(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
LTC2159C................................................. 0°C to 70°C
LTC2159I..............................................–40°C to 85°C
Storage Temperature Range................... –65°C to 150°C
Pin Configuration
FULL RATE CMOS OUTPUT MODE
TOP VIEW
DOUBLE DATA RATE CMOS OUTPUT MODE
TOP VIEW
AAVIICNNM+–
1
2
3
GND 4
36 D11
35 D10
34 D9
33 D8
REFH 5
32 OVDD
REFL 6 49 31 OGND
REFH 7 GND 30 CLKOUT+
REFL 8
29 CLKOUT
PAR/SER 9
28 D7
GND 10
27 D6
GND 11
26 D5
VDD 12
25 D4
AAVIICNNM+–
1
2
3
GND 4
36 D10_11
35 DNC
34 D8_9
33 DNC
REFH 5
32 OVDD
REFL 6 49 31 OGND
REFH 7 GND 30 CLKOUT+
REFL 8
29 CLKOUT
PAR/SER 9
28 D6_7
GND 10
27 DNC
GND 11
26 D4_5
VDD 12
25 DNC
UK PACKAGE
48-LEAD (7mm × 7mm) PLASTIC QFN
TJMAX = 150°C, θJA = 29°C/W
EXPOSED PAD (PIN 49) IS GND, MUST BE SOLDERED TO PCB
UK PACKAGE
48-LEAD (7mm × 7mm) PLASTIC QFN
TJMAX = 150°C, θJA = 29°C/W
EXPOSED PAD (PIN 49) IS GND, MUST BE SOLDERED TO PCB
2159f
2


Part Number LTC2159
Description Low Power ADC
Maker Linear Technology
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LTC2159 Datasheet PDF





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