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Linear Technology Electronic Components Datasheet

LTC2205IUK Datasheet

65Msps/40Msps ADC

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FEATURES
n Sample Rate: 65Msps/40Msps
n 79dB SNR and 100dB SFDR (2.25VP-P Range)
n SFDR >92dB at 140MHz (1.5VP-P Input Range)
n PGA Front End (2.25VP-P or 1.5VP-P Input Range)
n 700MHz Full Power Bandwidth S/H
n Optional Internal Dither
n Optional Data Output Randomizer
n Single 3.3V Supply
n Power Dissipation: 610mW/480mW
n Optional Clock Duty Cycle Stabilizer
n Out-of-Range Indicator
n Pin Compatible Family
105Msps: LTC2207 (16-Bit), LTC2207-14 (14-Bit)
80Msps: LTC2206 (16-Bit), LTC2206-14 (14-Bit)
65Msps: LTC2205 (16-Bit), LTC2205-14 (14-Bit)
40Msps: LTC2204 (16-Bit)
n 48-Pin (7mm × 7mm) QFN Package
APPLICATIONS
n Telecommunications
n Receivers
n Cellular Base Stations
n Spectrum Analysis
n Imaging Systems
n ATE
LTC2205/LTC2204
16-Bit, 65Msps/40Msps
ADCs
DESCRIPTION
The LTC®2205/LTC2204 are sampling 16-bit A/D converters
designed for digitizing high frequency, wide dynamic range
signals up to input frequencies of 700MHz. The input range
of the ADC can be optimized with the PGA front end.
The LTC2205/LTC2204 are perfect for demanding
communications applications, with AC performance that
includes 79dB SNR and 100dB spurious free dynamic range
(SFDR). Ultralow jitter of 90fsRMS allows undersampling of
high input frequencies with excellent noise performance.
Maximum DC specs include ±4LSB INL, ±1LSB DNL (no
missing codes).
A separate output power supply allows the CMOS output
swing to range from 0.5V to 3.6V.
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 allows
high performance at full speed with a wide range of clock
duty cycles.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
VCM
2.2μF
1.25V
COMMON MODE
BIAS VOLTAGE
3.3V
SENSE
INTERNAL ADC
REFERENCE
GENERATOR
OVDD
AIN+
ANALOG
INPUT
AIN
+
S/H
AMP
16-BIT
PIPELINED
ADC CORE
CORRECTION
LOGIC AND
SHIFT REGISTER
OUTPUT
DRIVERS
CLOCK/DUTY
CYCLE
CONTROL
ENC ENC
OGND
VDD
GND
PGA SHDN DITH MODE OE
ADC CONTROL INPUTS
RAND
0.5V TO 3.6V
0.1μF
OF
CLKOUT
D15
D0
0.1μF
0.1μF
3.3V
0.1μF
22076 TA01
LTC2205: 64K Point FFT,
fIN = 5.1MHz, –1dBFS,
PGA = 0, DITH = 0
0
–20
– 40
– 60
– 80
–100
–120
–140
0
5 10 15 20 25 30
FREQUENCY (MHz)
22054 TA01b
22054fc
1


Linear Technology Electronic Components Datasheet

LTC2205IUK Datasheet

65Msps/40Msps ADC

No Preview Available !

LTC2205/LTC2204
ABSOLUTE MAXIMUM RATINGS
OVDD = VDD (Notes 1 and 2)
Supply Voltage (VDD)................................... –0.3V to 4V
Digital Output Ground Voltage (OGND)........ –0.3V to 1V
Analog Input Voltage (Note 3) ..... –0.3V to (VDD + 0.3V)
Digital Input Voltage .................... –0.3V to (VDD + 0.3V)
Digital Output Voltage................ –0.3V to (OVDD + 0.3V)
Power Dissipation.............................................2000mW
Operating Temperature Range
LTC2205C/LTC2204C ............................... 0°C to 70°C
LTC2205I/LTC2204I..............................–40°C to 85°C
Storage Temperature Range ..................–65°C to 150°C
Digital Output Supply Voltage (OVDD).......... –0.3V to 4V
PIN CONFIGURATION
TOP VIEW
SENSE 1
36 OVDD
VCM 2
35 D11
VDD 3
34 D10
VDD 4
33 D9
GND 5
32 D8
AIN+ 6
AIN7
49
31 OGND
30 CLKOUT+
GND 8
29 CLKOUT
ENC+ 9
28 D7
ENC10
27 D6
GND 11
26 D5
VDD 12
25 OVDD
UK PACKAGE
48-LEAD (7mm s 7mm) PLASTIC QFN
EXPOSED PAD IS GND (PIN 49) MUST BE SOLDERED TO PCB BOARD
TJMAX = 150°C, θJA = 29°C/W
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC2205CUK#PBF
LTC2205CUK#TRPBF
LTC2205UK
48-Lead (7mm × 7mm) Plastic DFN
0°C to 70°C
LTC2204CUK#PBF
LTC2204CUK#TRPBF
LTC2204UK
48-Lead (7mm × 7mm) Plastic DFN
0°C to 70°C
LTC2205IUK#PBF
LTC2205IUK#TRPBF
LTC2205UK
48-Lead (7mm × 7mm) Plastic DFN
–40°C to 85°C
LTC2204IUK#PBF
LTC2204IUK#TRPBF
LTC2204UK
48-Lead (7mm × 7mm) Plastic DFN
–40°C to 85°C
LEAD BASED FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC2205CUK
LTC2205CUK#TR
LTC2205UK
48-Lead (7mm × 7mm) Plastic DFN
0°C to 70°C
LTC2204CUK
LTC2204CUK#TR
LTC2204UK
48-Lead (7mm × 7mm) Plastic DFN
0°C to 70°C
LTC2205IUK
LTC2205IUK#TR
LTC2205UK
48-Lead (7mm × 7mm) Plastic DFN
–40°C to 85°C
LTC2204IUK
LTC2204IUK#TR
LTC2204UK
48-Lead (7mm × 7mm) Plastic DFN
–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/
CONVERTER CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 4)
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Resolution (No Missing Codes)
l 16
Bits
Integral Linearity Error
Differential Analog Input (Note 5)
l
±0.7 ±4.5
LSB
Integral Linearity Error
Differential Linearity Error
Differential Analog Input (Note 5), TA = 25°C
Differential Analog Input
l
±0.7 ±4
LSB
±0.3 ±1
LSB
Offset Error
(Note 6)
l
±1 ±8.5
mV
Offset Drift
±10
μV/°C
Gain Error
External Reference
l
±0.2 ±1.9
%FS
Full-Scale Drift
Internal Reference
External Reference
±30
ppm/°C
±10
ppm/°C
Transition Noise
2.5
LSBRMS
22054fc
2


Part Number LTC2205IUK
Description 65Msps/40Msps ADC
Maker Linear Technology
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