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Linear Technology Electronic Components Datasheet

LTC2294UP Datasheet

80Msps Low Power 3V ADC

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FEATURES
Integrated Dual 12-Bit ADCs
Sample Rate: 80Msps
Single 3V Supply (2.7V to 3.4V)
Low Power: 422mW
70.6dB SNR at 70MHz Input
90dB SFDR at 70MHz Input
110dB Channel Isolation at 100MHz
Multiplexed or Separate Data Bus
Flexible Input: 1VP-P to 2VP-P Range
575MHz Full Power Bandwidth S/H
Clock Duty Cycle Stabilizer
Shutdown and Nap Modes
Pin Compatible Family
105Msps: LTC2282 (12-Bit), LTC2284 (14-Bit)
80Msps: LTC2294 (12-Bit), LTC2299 (14-Bit)
65Msps: LTC2293 (12-Bit), LTC2298 (14-Bit)
40Msps: LTC2292 (12-Bit), LTC2297 (14-Bit)
25Msps: LTC2291 (12-Bit), LTC2296 (14-Bit)
10Msps: LTC2290 (12-Bit), LTC2295 (14-Bit)
64-Pin (9mm × 9Umm) QFN Package
APPLICATIO S
Wireless and Wired Broadband Communication
Imaging Systems
Spectral Analysis
Portable Instrumentation
LTC2294
Dual 12-Bit, 80Msps
Low Power 3V ADC
DESCRIPTIO
The LTC®2294 is a 12-bit 80Msps, low power dual 3V
A/D converter designed for digitizing high frequency, wide
dynamic range signals. The LTC2294 is perfect for
demanding imaging and communications applications
with AC performance that includes 70.6dB SNR and 90dB
SFDR for signals well beyond the Nyquist frequency.
DC specs include ±0.4LSB INL (typ), ±0.2LSB DNL (typ)
and no missing codes over temperature. The transition
noise is a low 0.3LSBRMS.
A single 3V supply allows low power operation. A separate
output supply allows the outputs to drive 0.5V to 3.6V
logic. An optional multiplexer allows both channels to
share a digital output bus.
A single-ended CLK input controls converter operation. An
optional clock duty cycle stabilizer allows high perfor-
mance at full speed for a wide range of clock duty cycles.
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATIO
ANALOG
INPUT A
+
INPUT
S/H
12-BIT
PIPELINED
ADC CORE
CLK A
CLK B
CLOCK/DUTY CYCLE
CONTROL
CLOCK/DUTY CYCLE
CONTROL
ANALOG
INPUT B
+
INPUT
S/H
12-BIT
PIPELINED
ADC CORE
OUTPUT
DRIVERS
OVDD
D11A
•••
D0A
OGND
MUX
OUTPUT
DRIVERS
OVDD
D11B
•••
D0B
OGND
2294 TA01
SNR vs Input Frequency,
–1dB, 2V Range
75
74
73
72
71
70
69
68
67
66
65
0
50
100
150
INPUT FREQUENCY (MHz)
200
2294 TA02
2294fa
1


Linear Technology Electronic Components Datasheet

LTC2294UP Datasheet

80Msps Low Power 3V ADC

No Preview Available !

LTC2294
ABSOLUTE AXI U RATI GS
OVDD = VDD (Notes 1, 2)
Supply Voltage (VDD) ................................................. 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 ............................................ 1500mW
Operating Temperature Range
LTC2294C ............................................... 0°C to 70°C
LTC2294I .............................................–40°C to 85°C
Storage Temperature Range ..................–65°C to 125°C
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
AINA+ 1
AINA– 2
REFHA 3
48 DA5
47 DA4
46 DA3
REFHA 4
45 DA2
REFLA 5
44 DA1
REFLA 6
43 DA0
VDD 7
42 NC
CLKA 8
65
41 NC
CLKB 9
40 OFB
VDD 10
REFLB 11
39 DB11
38 DB10
REFLB 12
37 DB9
REFHB 13
36 DB8
REFHB 14
AINB– 15
AINB+ 16
35 DB7
34 DB6
33 DB5
UP PACKAGE
64-LEAD (9mm × 9mm) PLASTIC QFN
TJMAX = 125°C, θJA = 20°C/W
EXPOSED PAD (PIN 65) IS GND AND MUST BE SOLDERED TO PCB
ORDER PART
NUMBER
LTC2294IUP
LTC2294CUP
QFN PART*
MARKING
LTC2294UP
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
*The temperature grade is identified by a label on the shipping container.
CO VERTER CHARACTERISTICS The 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)
Integral Linearity Error
Differential Analog Input (Note 5)
12
Bits
–1.4 ±0.4 1.4
LSB
Differential Linearity Error
Offset Error
Gain Error
Offset Drift
Full-Scale Drift
Gain Matching
Offset Matching
Transition Noise
Differential Analog Input
(Note 6)
External Reference
Internal Reference
External Reference
External Reference
SENSE = 1V
–0.8 ±0.2 0.8
LSB
–12 ±2 12
mV
–2.5 ±0.5 2.5
%FS
±10
µV/°C
±30
ppm/°C
±5
ppm/°C
±0.3
%FS
±2
mV
0.3
LSBRMS
2294fa
2


Part Number LTC2294UP
Description 80Msps Low Power 3V ADC
Maker Linear Technology
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