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Linear Technology Electronic Components Datasheet

LTC2240-12 Datasheet

170Msps ADC

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LTC2240-12 pdf
LTC2240-12
12-Bit, 170Msps ADC
FEATURES
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n Sample Rate: 170Msps
n 65.6dB SNR
n 80dB SFDR
n 1.2GHz Full Power Bandwidth S/H
n Single 2.5V Supply
n Low Power Dissipation: 445mW
n LVDS, CMOS, or Demultiplexed CMOS Outputs
n Selectable Input Ranges: ±0.5V or ±1V
n No Missing Codes
n Optional Clock Duty Cycle Stabilizer
n Shutdown and Nap Modes
n Data Ready Output Clock
n Pin Compatible Family
250Msps: LTC2242-12 (12-Bit), LTC2242-10 (10-Bit)
210Msps: LTC2241-12 (12-Bit), LTC2241-10 (10-Bit)
170Msps: LTC2240-12 (12-Bit), LTC2240-10 (10-Bit)
185Msps: LTC2220-1 (12-Bit)*
170Msps: LTC2220 (12-Bit), LTC2230 (10-Bit)*
135Msps: LTC2221 (12-Bit), LTC2231 (10-Bit)*
n 64-Pin 9mm × 9mm QFN Package
APPLICATIONS
n Wireless and Wired Broadband Communication
n Cable Head-End Systems
n Power Amplifier Linearization
n Communications Test Equipment
DESCRIPTION
The LTC®2240-12 is a 170Msps, sampling 12-bit A/D con-
verter designed for digitizing high frequency, wide dynamic
range signals. The LTC2240-12 is perfect for demanding
communications applications with AC performance that
includes 65.6dB SNR and 80dB SFDR. Ultralow jitter of
95fsRMS allows IF undersampling with excellent noise
performance.
DC specs include ±0.6LSB INL (typ), ±0.4LSB DNL (typ)
and no missing codes over temperature.
The digital outputs can be either differential LVDS, or
single-ended CMOS. There are three format options for
the CMOS outputs: a single bus running at the full data
rate or two demultiplexed buses running at half data rate
with either interleaved or simultaneous update. A separate
output power supply allows the CMOS output swing to
range from 0.5V to 2.625V.
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 over a wide range of clock duty cycles.
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
*LTC2220-1, LTC2220, LTC2221, LTC2230, LTC2231 are 3.3V parts.
TYPICAL APPLICATION
REFH
REFL
FLEXIBLE
REFERENCE
2.5V
VDD
ANALOG
INPUT
+
INPUT
S/H
12-BIT
PIPELINED
ADC CORE
CORRECTION
LOGIC
CLOCK/DUTY
CYCLE
CONTROL
ENCODE
INPUT
OUTPUT
DRIVERS
0.5V
TO 2.625V
OVDD
D11
• CMOS
• OR
• LVDS
D0
OGND
224012 TA01
SNR vs Input Frequency
85
80
75
70
65
1V RANGE
60
2V RANGE
55
50
45
40
0 100 200 300 400 500 600 700 800 900 1000
INPUT FREQUENCY (MHz)
224012 G11
224012fb
1


Linear Technology Electronic Components Datasheet

LTC2240-12 Datasheet

170Msps ADC

No Preview Available !

LTC2240-12 pdf
LTC2240-12
ABSOLUTE MAXIMUM RATINGS OVDD = VDD (Notes 1, 2)
Supply Voltage (VDD) ...............................................2.8V
Digital Output Ground Voltage (OGND)........ –0.3V to 1V
wwwA.dnaatalsohgeeItn4pu.ucot mVoltage (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 .............................................1500mW
Operating Temperature Range
LTC2240C-12 ........................................... 0°C to 70°C
LTC2240I-12 ........................................–40°C to 85°C
Storage Temperature Range................... –65°C to 150°C
PIN CONFIGURATION
TOP VIEW
AIN+ 1
AIN+ 2
AIN– 3
AIN– 4
REFHA 5
REFHA 6
48 D9+/DA6
47 D9/DA5
46 D8+/DA4
45 D8/DA3
44 D7+/DA2
43 D7/DA1
REFLB 7
42 OVDD
REFLB 8 65 41 OGND
REFHB 9
40 D6+/DA0
REFHB 10
39 D6/CLKOUTA
REFLA 11
38 D5+/CLKOUTB
REFLA 12
37 D5/OFB
VDD 13
VDD 14
36 CLKOUT+/DB11
35 CLKOUT/DB10
VDD 15
34 OVDD
GND 16
33 OGND
UP PACKAGE
64-LEAD (9mm × 9mm) PLASTIC QFN
EXPOSED PAD (PIN 65) IS GND, MUST BE SOLDERED TO PCB
TJMAX = 150°C, θJA = 20°C/W
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC2240CUP-12#PBF
LTC2240CUP-12#TRPBF LTC2240UP-12
64-Lead (9mm × 9mm) Plastic QFN
0°C to 70°C
LTC2240IUP-12#PBF
LTC2240IUP-12#TRPBF LTC2240UP-12
64-Lead (9mm × 9mm) Plastic QFN
–40°C to 85°C
LEAD BASED FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC2240CUP-12
LTC2240CUP-12#TR
LTC2240UP-12
64-Lead (9mm × 9mm) Plastic QFN
0°C to 70°C
LTC2240IUP-12
LTC2240IUP-12#TR
LTC2240UP-12
64-Lead (9mm × 9mm) Plastic QFN
–40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *Temperature grades are 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/
224012fb
2


Part Number LTC2240-12
Description 170Msps ADC
Manufacturer Linear Technology
Total Page 28 Pages
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LTC2240-12 pdf
LTC2240-12 Datasheet pdf
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