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CLC5956PCASM PDF даташит

Спецификация CLC5956PCASM изготовлена ​​​​«National Semiconductor» и имеет функцию, называемую «12-bit/ 65 MSPS Broadband Monolithic A/D Converter».

Детали детали

Номер произв CLC5956PCASM
Описание 12-bit/ 65 MSPS Broadband Monolithic A/D Converter
Производители National Semiconductor
логотип National Semiconductor логотип 

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CLC5956PCASM Даташит, Описание, Даташиты
June 1999
CLC5956
12-bit, 65 MSPS Broadband Monolithic A/D Converter
General Description
The CLC5956 is a monolithic 12-bit, 65 MSPS
analog-to-digital converter subsystem. The device has been
optimized for use in cellular base stations and other applica-
tions where high resolution, high sampling rate, wide dy-
namic range, low power dissipation, and compact size are
required. The CLC5956 features differential analog inputs,
low jitter differential PECL clock inputs, a low distortion
track-and-hold with DC to 300 MHz input bandwidth, a band-
gap voltage reference, TTL compatible CMOS output logic,
and a proprietary 12-bit multi-stage quantizer. The CLC5956
is fabricated on the ABIC-IV 0.8 micron BiCMOS process.
The part features a 73 dB spurious free dynamic range
(SFDR) and 67 dB SNR. The wideband track-and-hold al-
lows sampling of IF signals to greater than 250 MHz. The
part produces two-tone, dithered, spurious-free dynamic
range of 83 dBFS at 75 MHz input frequency. The differential
analog input provides excellent common-mode rejection,
while the differential PECL clock inputs permit the use of bal-
anced transmission to minimize jitter in distributed systems.
The 48-pin TSSOP package provides an extremely small
footprint for applications where space is a critical consider-
ation. The CLC5956 operates from a single +5V power sup-
ply over the industrial temperature range of −40˚C to +85˚C.
National thoroughly tests each part to verify full compliance
with the guaranteed specifications.
Features
n Wide dynamic range
n IF sampling capability
n 300 MHz input bandwidth
n Small 48-pin TSSOP
n Single +5V supply
n Low cost
Key Specifications
n Sample Rate
n SFDR
n SFDR with dither
n SNR
n Low power consumption
Applications
n Cellular base-stations
n Digital communications
n Infrared/CCD imaging
n IF sampling
n Electro-optics
n Instrumentation
n Medical imaging
n High definition video
65 MSPS
73 dBc
85 dBFS
67 dB
615 mW
Block Diagram
© 1999 National Semiconductor Corporation DS015011
DS015011-2
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CLC5956PCASM Даташит, Описание, Даташиты
Pin Configuration
Ordering Information
CLC5956IMTD
CLC5956IMTDX
CLC5956PCASM
48-Pin TSSOP
48-Pin TSSOP (Taped Reel)
Evaluation Board
Pin Descriptions
Pin
Name
AIN
AIN
ENCODE
ENCODE
DS015011-1
Pin
No.
13, 14
9, 10
VCM
21
D0–D11
GND
+AVCC
+DVCC
30–34,
39–45
1–4, 8, 11, 12, 15, 19,
20, 23–26, 35, 36, 47, 48
5–7, 16–18, 22
37, 38, 46
Description
Differential input with a common mode voltage of +2.4V. The ADC
full scale input is 1.024 VPP on each of the complimentary input
signals.
Differential clock where ENCODE initiates a new data conversion
cycle on each rising edge. Logic for these inputs are a 50% duty
cycle differential PECL signal.
Internal common mode voltage reference. Nominally +2.4V. Can
be used for the input common mode voltage. This voltage is
derived from an internal bandgap reference.
Digital data outputs are CMOS and TTL compatible. D0 is the LSB
and D11 is the MSB. MSB is inverted. Output coding is two’s
complement.
Circuit ground.
+5V power supply for the analog section. Bypass to ground with a
0.1 µF capacitor.
+5V power supply for the digital section. Bypass to ground with a
0.1 µF capacitor.
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CLC5956PCASM Даташит, Описание, Даташиты
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Positive Supply Voltage (VCC)
Differential Voltage between any Two
Grounds
Analog Input Voltage Range
Digital Input Voltage Range
Output Short Circuit Duration (one-pin
to ground)
Junction Temperature (Note 6)
Storage Temperature Range
Lead Solder Duration (+300˚C)
−0.5V to +6V
<200 mV
GND to VCC
−0.5V to +VCC
Infinite
175˚C
−65˚C to +150˚C
10 sec.
Recommended Operating
Conditions
Positive Supply Voltage (VCC)
Analog Input Voltage Range
Operating Temperature Range
+5V ±5%
2.048 VPP diff.
−40˚C to +85˚C
Package Thermal Resistance (Note 6)
Package
48-Pin TSSOP
θJA
56˚C/W
θJC
16˚C/W
Reliability Information
Transistor Count
5000
Converter Electrical Characteristics
The following specifications
limits apply for TA = Tmin
=app4lyfCortAoVTCmCax=
=D+V8C5C˚C=,
+5V, 52
all other
MSPS, 50% Encode Clock
limits TA = 25˚C (Notes 2,
Duty Cycle,
3, 4).
CL
=
7
pF.
Boldface
Symbol
Parameter
Conditions
Min
Typ
Max
Units
DYNAMIC PERFORMANCE
BW Large-Signal Bandwidth
Overvoltage Recovery Time
tDS Effective Aperture Delay
tAJ Aperture Jitter
NOISE AND DISTORTION
VIN = FS −3 dB
VIN = 1.5 FS (0.01%)
300
12
−0.21
0.4
MHz
ns
ns
ps(rms)
SNR
Signal-to-Noise Ratio (without
harmonics)
SFDR
Spurious-Free Dynamic Range
Spurious-Free Dynamic Range
(dithered)
fIN = 20 MHz, FS −1 dB
fIN = 5 MHz, FS −3 dB
fIN = 25 MHz, FS −3 dB
fIN = 75 MHz, FS −3 dB
fIN = 150 MHz, FS −3 dB
fIN = 250 MHz, FS −3 dB
fIN = 20 MHz, FS −1 dB
fIN = 5 MHz, FS −3 dB
fIN = 25 MHz, FS −3 dB
fIN = 75 MHz, FS −3 dB
fIN = 150 MHz, FS −3 dB
fIN = 250 MHz, FS −3 dB
fIN = 19 MHz, FS −6 dB
63 66
67
66
64
62
59
66 70
73
70
68
58
55
85
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBc
dBc
dBc
dBc
dBc
dBc
dBFS
Intermodulation Distortion
IMD
f1 = 149.84 MHz, f2 = 149.7
MHz, FS −10 dB
f1 = 249.86 MHz, f2 = 249.69
MHz, FS −10 dB
68 dBFS
58 dBFS
Intermodulation Distortion
f1 = 74 MHz, f2 = 75 MHz, FS
83
dBFS
(dithered)
−12 dB
DC ACCURACY AND PERFORMANCE
DNL
Differential Non-Linearity
DC; Full Scale
0.65
LSB
INL Integral Non-Linearity
DC; Full Scale
1.7 LSB
Bipolar Offset Error
−1 mV
Bipolar Gain Error
−0.1
% FS
ANALOG INPUTS
VIN
RIN (SE)
Analog Diff Input Voltage Range
Analog Input Resistance
(Single-Ended)
2.048
500
VPP
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Номер в каталогеОписаниеПроизводители
CLC5956PCASM12-bit/ 65 MSPS Broadband Monolithic A/D ConverterNational Semiconductor
National Semiconductor

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