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PDF LTC2223 Data sheet ( Hoja de datos )
| Número de pieza | LTC2223 | |
| Descripción | (LTC2222 / LTC2223) 105Msps/80Msps ADCs | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LTC2223 (archivo pdf) en la parte inferior de esta página. Total 28 Páginas | ||
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FEATURES
www.datasheet4u.com
■ Sample Rate: 105Msps/80Msps
■ 68dB SNR up to 140MHz Input
■ 80dB SFDR up to 170MHz Input
■ 775MHz Full Power Bandwidth S/H
■ Single 3.3V Supply
■ Low Power Dissipation: 475mW/366mW
■ Selectable Input Ranges: ±0.5V or ±1V
■ No Missing Codes
■ Optional Clock Duty Cycle Stabilizer
■ Shutdown and Nap Modes
■ Data Ready Output Clock
■ Pin Compatible Family
135Msps: LTC2224 (12-Bit), LTC2234 (10-Bit)
105Msps: LTC2222 (12-Bit), LTC2232 (10-Bit)
80Msps: LTC2223 (12-Bit), LTC2233 (10-Bit)
■ 48-Pin QFN PackUage
APPLICATIO S
■ Wireless and Wired Broadband Communication
■ Cable Head-End Systems
■ Power Amplifier Linearization
■ Communications Test Equipment
LTC2222/LTC2223
12-Bit,105Msps/
80Msps ADCs
DESCRIPTIO
The LTC®2222 and LTC2223 are 105Msps/80Msps, sam-
pling 12-bit A/D converters designed for digitizing high
frequency, wide dynamic range signals. The LTC2222/
LTC2223 are perfect for demanding communications
applications with AC performance that includes 68dB SNR
and 80dB spurious free dynamic range for signals
up to 170MHz. Ultralow jitter of 0.15psRMS allows
undersampling of IF frequencies with excellent noise
performance.
DC specs include ±0.3LSB INL (typ), ±0.2LSB DNL (typ)
and no missing codes over temperature. The transition
noise is a low 0.5LSBRMS.
A separate output power supply allows the outputs to drive
0.5V to 3.6V logic.
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 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
VDD
3.3V
REFH
REFL
FLEXIBLE
REFERENCE
ANALOG
INPUT
+
INPUT
S/H
–
12-BIT
PIPELINED
ADC CORE
CORRECTION
LOGIC
CLOCK/DUTY
CYCLE
CONTROL
ENCODE
INPUT
OUTPUT
DRIVERS
0VDD
0.5V TO 3.6V
D11
•
•
•
D0
0GND
22201 TA01
100
95
90
85
80
75
70
65
60
0
SFDR vs Input Frequency
4th OR HIGHER
2nd or 3rd
100 200 300 400 500 600
INPUT FREQUENCY (MHz) 22223 TA01b
22223fa
1
1 page  
LTC2222/LTC2223
POWER REQUIRE E TS The ● denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at TA = 25°C. (Note 8)
SYMBOL
PARAMETER
wwwV.dDaDtasheet4u.comAnalog Supply Voltage
OVDD
Output Supply Voltage
IVDD Analog Supply Current
PDISS
Power Dissipation
PSHDN
Shutdown Power
PNAP Nap Mode Power
CONDITIONS
(Note 7)
(Note 7)
SHDN = H, OE = H, No CLK
SHDN = H, OE = L, No CLK
LTC2222
MIN TYP MAX
● 3.1 3.3 3.5
● 0.5 3.3 3.6
● 144 162
● 475 535
2
35
LTC2223
MIN TYP MAX
3.1 3.3 3.5
0.5 3.3 3.6
111 123
366 406
2
35
UNITS
V
V
mA
mW
mW
mW
WU
TI I G CHARACTERISTICS The ● denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at TA = 25°C. (Note 4)
SYMBOL
PARAMETER
CONDITIONS
LTC2222
MIN TYP MAX
LTC2223
MIN TYP MAX
UNITS
fS Sampling Frequency
●1
105 1
80 MHz
tL ENC Low Time
Duty Cycle Stabilizer Off
Duty Cycle Stabilizer On
● 4.5 4.76 500
● 3 4.76 500
5.9 6.25 500
3 6.25 500
ns
ns
tH ENC High Time
Duty Cycle Stabilizer Off
Duty Cycle Stabilizer On
● 4.5 4.76 500
● 3 4.76 500
5.9 6.25 500
3 6.25 500
ns
ns
tAP Sample-and-Hold Aperture Delay
tD ENC to DATA Delay
tC ENC to CLOCKOUT Delay
DATA to CLOCKOUT Skew
tOE Output Enable Delay
Pipeline Latency
(Note 7)
(Note 7)
(tC - tD) (Note 7)
(Note 7)
● 1.3
● 1.3
● –0.6
●
0
2.1
2.1
0
5
5
4
4
0.6
10
0
1.3 2.1
1.3 2.1
–0.6 0
5
5
4
4
0.6
10
ns
ns
ns
ns
ns
Cycles
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: All voltage values are with respect to ground with GND and OGND
wired together (unless otherwise noted).
Note 3: When these pin voltages are taken below GND or above VDD, they will
be clamped by internal diodes. This product can handle input currents of
greater than 100mA below GND or above VDD without latchup.
Note 4: VDD = 3.3V, fSAMPLE = 105MHz (LTC2222) or 80MHz (LTC2223),
differential ENC+/ENC– = 2VP-P sine wave, input range = 2VP-P with differential
drive, unless otherwise noted.
Note 5: Integral nonlinearity is defined as the deviation of a code from a
straight line passing through the actual endpoints of the transfer curve. The
deviation is measured from the center of the quantization band.
Note 6: Offset error is the offset voltage measured from –0.5 LSB when the
output code flickers between 0000 0000 0000 and 1111 1111 1111 in 2’s
complement output mode.
Note 7: Guaranteed by design, not subject to test.
Note 8: VDD = 3.3V, fSAMPLE = 105MHz (LTC2222) or 80MHz (LTC2223),
differential ENC+/ENC– = 2VP-P sine wave, input range = 1VP-P with differential
drive.
22223fa
5
5 Page 
TYPICAL PERFOR A CE CHARACTERISTICS
LTC2222/LTC2223
LTC2223: 8192 Point FFT,
www.datashfIeNe=t47u.0cMomHz, –1dB, 1V Range
0
– 10
– 20
– 30
– 40
– 50
– 60
– 70
– 80
– 90
– 100
– 110
– 120
0
5 10 15 20 25 30 35 40
FREQUENCY (MHz)
2223 G19
LTC2223: 8192 Point FFT,
fIN = 250MHz, –1dB, 2V Range
0
– 10
– 20
– 30
– 40
– 50
– 60
– 70
– 80
– 90
– 100
– 110
– 120
0
5 10 15 20 25 30 35 40
FREQUENCY (MHz)
2223 G22
LTC2223: 8192 Point 2-Tone FFT,
fIN = 68MHz and 70MHz, –7dB
Each, 2V Range
0
– 10
– 20
– 30
– 40
– 50
– 60
– 70
– 80
– 90
– 100
– 110
– 120
0
5 10 15 20 25 30 35 40
FREQUENCY (MHz)
2223 G25
LTC2223: 8192 Point FFT,
fIN = 140MHz, –1dB, 2V Range
0
– 10
– 20
– 30
– 40
– 50
– 60
– 70
– 80
– 90
– 100
– 110
– 120
0
5 10 15 20 25 30 35 40
FREQUENCY (MHz)
2223 G20
LTC2223: 8192 Point FFT,
fIN = 140MHz, –1dB, 1V Range
0
– 10
– 20
– 30
– 40
– 50
– 60
– 70
– 80
– 90
– 100
– 110
– 120
0
5 10 15 20 25 30 35 40
FREQUENCY (MHz)
2223 G21
LTC2223: 8192 Point FFT,
fIN = 250MHz, –1dB, 1V Range
0
– 10
– 20
– 30
– 40
– 50
– 60
– 70
– 80
– 90
– 100
– 110
– 120
0
5 10 15 20 25 30 35 40
FREQUENCY (MHz)
2223 G23
LTC2223: 8192 Point 2-Tone FFT,
fIN = 138MHz and 140MHz, –7dB
Each, 1V Range
0
– 10
– 20
– 30
– 40
– 50
– 60
– 70
– 80
– 90
– 100
– 110
– 120
0
5 10 15 20 25 30 35 40
FREQUENCY (MHz)
2223 G26
LTC2223: 8192 Point FFT,
fIN = 500MHz, –6dB, 1V Range
0
– 10
– 20
– 30
– 40
– 50
– 60
– 70
– 80
– 90
– 100
– 110
– 120
0
5 10 15 20 25 30 35 40
FREQUENCY (MHz)
2223 G24
LTC2223: Shorted Input Noise
Histogram
100000
96679
80000
60000
40000
20000
16182
18080
42
0
2044
2045
2046 2047
CODE
89
2048
2223 G27
22223fa
11
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet LTC2223.PDF ] | |
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