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PDF ADC14155 Data sheet ( Hoja de datos )
| Número de pieza | ADC14155 | |
| Descripción | 1.1 GHz Bandwidth A/D Converter | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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May 2007
ADC14155
14-Bit, 155 MSPS, 1.1 GHz Bandwidth A/D Converter
General Description
The ADC14155 is a high-performance CMOS analog-to-dig-
ital converter capable of converting analog input signals into
14-bit digital words at rates up to 155 Mega Samples Per
Second (MSPS). This converter uses a differential, pipelined
architecture with digital error correction and an on-chip sam-
ple-and-hold circuit to minimize power consumption and the
external component count, while providing excellent dynamic
performance. A unique sample-and-hold stage yields a full-
power bandwidth of 1.1 GHz. The ADC14155 operates from
dual +3.3V and +1.8V power supplies and consumes 967 mW
of power at 155 MSPS.
The separate +1.8V supply for the digital output interface al-
lows lower power operation with reduced noise. A power-
down feature reduces the power consumption to 5 mW with
the clock input disabled, while still allowing fast wake-up time
to full operation.
The differential inputs provide a full scale differential input
swing equal to 2 times the reference voltage. A stable 1.0V
internal voltage reference is provided, or the ADC14155 can
be operated with an external reference.
The ADC14155 can be configured for either single-ended or
differential operation. Clock mode (differential versus single-
www.DataSheet4U.com ended) and output data format (offset binary versus 2's com-
plement) are pin-selectable. A duty cycle stabilizer maintains
performance over a wide range of clock duty cycles.
The ADC14155 is available in a 48-lead LLP package and
operates over the industrial temperature range of −40°C to
+85°C.
Features
■ 1.1 GHz Full Power Bandwidth
■ Internal sample-and-hold circuit
■ Low power consumption
■ Internal precision 1.0V reference
■ Single-ended or Differential clock modes
■ Data Ready output clock
■ Clock Duty Cycle Stabilizer
■ Dual +3.3V and +1.8V supply operation (+/- 10%)
■ Power-down mode
■ Offset binary or 2's complement output data format
■ 48-pin LLP package, (7x7x0.8mm, 0.5mm pin-pitch)
Key Specifications
■ Resolution
■ Conversion Rate
■ SNR (fIN = 70 MHz)
■ SFDR (fIN = 70 MHz)
■ ENOB (fIN = 70 MHz)
■ Full Power Bandwidth
■ Power Consumption
14 Bits
155 MSPS
71.3 dBFS (typ)
87.0 dBFS (typ)
11.5 bits (typ)
1.1 GHz (typ)
967 mW (typ)
Applications
■ High IF Sampling Receivers
■ Wireless Base Station Receivers
■ Power Amplifier Linearization
■ Multi-carrier, Multi-mode Receivers
■ Test and Measurement Equipment
■ Communications Instrumentation
■ Radar Systems
Block Diagram
© 2007 National Semiconductor Corporation 201790
20179002
www.national.com
1 page  
Absolute Maximum Ratings (Notes 1, 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage (VA, VD)
Supply Voltage (VDR)
|VA–VD|
−0.3V to 4.2V
−0.3V to 2.35V
≤ 100 mV
Voltage on Any Input Pin
(Not to exceed 4.2V)
−0.3V to (VA +0.3V)
Voltage on Any Output Pin
(Not to exceed 2.35V)
-0.3V to (VDR +0.2V)
Input Current at Any Pin other
than Supply Pins (Note 3)
±5 mA
Package Input Current (Note 3)
±50 mA
Max Junction Temp (TJ)
Thermal Resistance (θJA)
Package Dissipation at TA = 25°
C (Note 4)
+150°C
24°C/W
5.2W
ESD Rating
Human Body Model (Note 5)
2500V
Machine Model (Note 5)
250V
Storage Temperature
−65°C to +150°C
Soldering process must comply with National
Semiconductor's Reflow Temperature Profile
specifications. Refer to www.national.com/packaging.
(Note 6)
Operating Ratings (Notes 1, 2)
Operating Temperature
Supply Voltage (VA, VD)
Output Driver Supply (VDR)
CLK
Clock Duty Cycle
Analog Input Pins
VCM
|AGND-DGND|
−40°C ≤ TA ≤ +85°C
+3.0V to +3.6V
+1.6V to +2.0V
−0.05V to (VA + 0.05V)
30/70 %
0V to 2.6V
1.4V to 1.6V
≤100mV
5 www.national.com
5 Page 
Timing Diagram
Transfer Characteristic
Output Timing
20179009
FIGURE 1. Transfer Characteristic
11
20179010
www.national.com
11 Page | ||
| Páginas | Total 22 Páginas | |
| PDF Descargar | [ Datasheet ADC14155.PDF ] | |
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