
LTC2242-10
1
224210fd
Typical applicaTion
FeaTures
applicaTions
DescripTion
10-Bit, 250Msps ADC
The LTC2242-10 is a 250Msps, sampling 10-bit A/D con-
verterdesignedfordigitizinghighfrequency,widedynamic
range signals. The LTC2240-10 is perfect for demanding
communications applications with AC performance that
includes 60.5dB SNR and 78dB SFDR. Ultralow jitter of
95fsRMS allows IF undersampling with excellent noise
performance.
DC specs include ±0.4LSB INL (typ), ±0.2LSB 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 ENC– inputs 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.
SFDR vs Input Frequency
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Sample Rate: 250Msps
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60.5dB SNR
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78dB SFDR
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1.2GHz Full Power Bandwidth S/H
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Single 2.5V Supply
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Low Power Dissipation: 740mW
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LVDS, CMOS, or Demultiplexed CMOS Outputs
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Selectable Input Ranges: ±0.5V or ±1V
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No Missing Codes
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Optional Clock Duty Cycle Stabilizer
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Shutdown and Nap Modes
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Data Ready Output Clock
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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)*
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64-Pin 9mm
× 9mm QFN Package
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Wireless and Wired Broadband Communication
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Cable Head-End Systems
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Power Amplifier Linearization
n
Communications Test Equipment
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.
*LTC2220-1, LTC2220, LTC2221, LTC2230, LTC2231 are 3.3V parts.
–
+
INPUT
S/H
CORRECTION
LOGIC
OUTPUT
DRIVERS
10-BIT
PIPELINED
ADC CORE
CLOCK/DUTY
CYCLE
CONTROL
FLEXIBLE
REFERENCE
D9
D0
ENCODE
INPUT
REFH
REFL
ANALOG
INPUT
224210 TA01
CMOS
OR
LVDS
0.5V
TO 2.625V
2.5V
VDD
OVDD
OGND
INPUT FREQUENCY (MHz)
0
SFDR
(dBFS)
70
80
85
800
224210 G11
60
50
65
75
55
45
40
200
100
400
300
600 700
900
500
1000
1V RANGE
2V RANGE