CLC5958 Datasheet, PDF (1/13 Pages) National Semiconductor (TI) – 14-bit, 52MSPS A/D Converter

N
CLC5958
14-bit, 52MSPS A/D Converter
September 1999
General Description
The CLC5958 is a monolithic 14-bit, 52MSPS analog-to-digital
converter. The ultra-wide dynamic range and high sample rate of
the device make it an excellent choice for wideband receivers
found in multi-channel basestations. The CLC5958 integrates a
low distortion track-and-hold amplifier and a 14-bit multi-stage
quantizer on a single die. Other features include differential
analog inputs, low jitter differential clock inputs, an internal
bandgap voltage reference, and CMOS/TTL compatible outputs.
The CLC5958 is fabricated on the National ABIC-V 0.8 micron
BiCMOS process.
Features
• 14-bit
• 52MSPS
• Ultra-wide dynamic range
Noise floor: -72dBFS
SFDR: 90dB
• Excellent performance to Nyquist
• IF sampling capability
• Very small package: 48-pin CSP
• Programmable output levels:
3.3V to 5V
The CLC5958 features a 90dB spurious free dynamic range
(SFDR) and a 70dB signal to noise ratio (SNR). The balanced
differential analog inputs ensure low even-order distortion, while
the differential clock inputs permit the use of balanced clock signals
to minimize clock jitter. The 48-pin CSP package provides an
extremely small footprint for applications where space is a critical
consideration. The package also provides a very low thermal
resistance to ambient. The CLC5958 may be operated with a
single +5V power supply. Alternatively, an additional supply may
be used to program the digital output levels over the range of
+3.3V to +5V. Operation over the industrial temperature range of
-40°C to +85°C is guaranteed. National Semiconductor tests
each part to verify compliance with the guaranteed specifications.
Applications
• Multi-channel basestations
• Multi-standard basestations:
GSM, WCDMA, DAMPS, etc.
• Smart antenna systems
• Wireless local loop
• Wideband digital communications
Actual Size
(Bottom View)
Single-Tone Output Spectrum
0
Sample Rate = 52MSPS
Input Frequency = 5MHz
-20
-40
-60
-80
-100
-120
0
5
10
15
20
25
Frequency (MHz)
© 1999 National Semiconductor Corporation
Printed in the U.S.A.
Output Response with GSM 1800 Blocker
-20
Full Scale = -24dBM
Res. BW = 200KHz
-40
-25dBm blocker
-60
-80
-101dBm reference
-100
-120
0
5
10
15
20
25
Frequency (MHz)
http://www.national.com