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PDF LTC2204 Data sheet ( Hoja de datos )
| Número de pieza | LTC2204 | |
| Descripción | (LTC2204 / LTC2205) 65Msps/40Msps | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LTC2204 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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FEATURES
www.datasheet4u.com
n Sample Rate: 65Msps/40Msps
n 79dB SNR and 100dB SFDR (2.25VP-P Range)
n SFDR >92dB at 140MHz (1.5VP-P Input Range)
n PGA Front End (2.25VP-P or 1.5VP-P Input Range)
n 700MHz Full Power Bandwidth S/H
n Optional Internal Dither
n Optional Data Output Randomizer
n Single 3.3V Supply
n Power Dissipation: 610mW/480mW
n Optional Clock Duty Cycle Stabilizer
n Out-of-Range Indicator
n Pin Compatible Family
105Msps: LTC2207 (16-Bit), LTC2207-14 (14-Bit)
80Msps: LTC2206 (16-Bit), LTC2206-14 (14-Bit)
65Msps: LTC2205 (16-Bit), LTC2205-14 (14-Bit)
40Msps: LTC2204 (16-Bit)
n 48-Pin (7mm × 7mm) QFN Package
U
APPLICATIO S
n Telecommunications
n Receivers
n Cellular Base Stations
n Spectrum Analysis
n Imaging Systems
n ATE
LTC2205/LTC2204
16-Bit, 65Msps/40Msps
ADCs
DESCRIPTIO
The LTC®2205/LTC2204 are sampling 16-bit A/D converters
designed for digitizing high frequency, wide dynamic range
signals up to input frequencies of 700MHz. The input range
of the ADC can be optimized with the PGA front end.
The LTC2205/LTC2204 are perfect for demanding com-
munications applications, with AC performance that in-
cludes 79dB SNR and 100dB spurious free dynamic range
(SFDR). Ultralow jitter of 90fsRMS allows undersampling of
high input frequencies with excellent noise performance.
Maximum DC specs include ±4LSB INL, ±1LSB DNL (no
missing codes).
A separate output power supply allows the CMOS output
swing to range from 0.5V to 3.6V.
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 al-
lows high performance at full speed with a wide range of
clock duty cycles.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATIO
3.3V
SENSE
VCM
2.2µF
1.25V
COMMON MODE
BIAS VOLTAGE
INTERNAL ADC
REFERENCE
GENERATOR
OVDD
AIN+
ANALOG
INPUT
AIN–
+
S/H
AMP
–
16-BIT
PIPELINED
ADC CORE
CORRECTION
LOGIC AND
SHIFT REGISTER
OUTPUT
DRIVERS
CLOCK/DUTY
CYCLE
CONTROL
ENC ENC
OGND
VDD
GND
PGA SHDN DITH MODE OE
ADC CONTROL INPUTS
RAND
0.5V TO 3.6V
0.1µF
OF
CLKOUT
D15
•
•
•
D0
0.1µF
0.1µF
3.3V
0.1µF
22076 TA01
LTC2205: 64K Point FFT,
fIN = 5.1MHz, –1dBFS,
PGA = 0, DITH = 0
0
–20
–40
–60
–80
–100
–120
–140
0
5 10 15 20 25 30
FREQUENCY (MHz)
22054 TA01b
22054fb
1
1 page  
LTC2205/LTC2204
COMMON MODE BIAS CHARACTERISTICS The l denotes the specifications which apply over
the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 4)
PARAMETER
VCM Output Voltage
www.VdCaMtaOsuhtepeutt4Tue.mcopmco
VCM Line Regulation
VCM Output Resistance
CONDITIONS
IOUT = 0
IOUT = 0
3.135V ≤ VDD ≤ 3.465V
1mA ≤ | IOUT | ≤ 1mA
MIN TYP MAX UNITS
1.15 1.25 1.35
V
±40 ppm/°C
1 mV/ V
1Ω
DIGITAL INPUTS AND DIGITAL OUTPUTS The l denotes the specifications which apply over the
full operating temperature range, otherwise specifications are at TA = 25°C. (Note 4)
SYMBOL
PARAMETER
ENCODE INPUTS (ENC+, ENC–)
VID Differential Input Voltage (Note 7)
VICM Common Mode Input Voltage
RIN Input Resistance
CIN Input Capacitance
LOGIC INPUTS (DITH, PGA, SHDN, RAND)
VIH
VIL
IIN
CIN
LOGIC OUTPUTS
High Level Input Voltage
Low Level Input Voltage
Digital Input Current
Digital Input Capacitance
OVDD = 3.3V
VOH
High Level Output Voltage
VOL Low Level Output Voltage
ISOURCE
ISINK
OVDD = 2.5V
VOH
VOL
OVDD = 1.8V
VOH
VOL
Output Source Current
Output Sink Current
High Level Output Voltage
Low Level Output Voltage
High Level Output Voltage
Low Level Output Voltage
CONDITIONS
Internally Set
Externally Set (Note 7)
(See Figure 2)
(Note 7)
VDD = 3.3V
VDD = 3.3V
VIN = 0V to VDD
(Note 7)
VDD = 3.3V
VDD = 3.3V
VOUT = 0V
VOUT = 3.3V
VDD = 3.3V
VDD = 3.3V
VDD = 3.3V
VDD = 3.3V
MIN TYP MAX UNITS
l 0.2
1.6
1.2 3.0
6
3
V
V
V
kΩ
pF
l2
l
l
0.8
±10
1.5
V
V
µA
pF
IO = –10µA
IO = –200µA
IO = 160µA
IO = 1.6mA
l
l
3.1
3.299
3.29
0.01
0.10
–50
50
0.4
IO = –200µA
IO = 1.60mA
IO = –200µA
IO = 1.60mA
2.49
0.1
1.79
0.1
V
V
V
V
mA
mA
V
V
V
V
POWER REQUIREMENTS The l denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at TA = 25°C.
SYMBOL PARAMETER
VDD Analog Supply Voltage
PSHDN Shutdown Power
OVDD Output Supply Voltage
IVDD Analog Supply Current
PDIS Power Dissipation
CONDITIONS
SHDN = VDD
LTC2204
MIN TYP MAX
3.135 3.3 3.465
0.2
l 0.5V
3.6
l 145 200
l 480 660
LTC2205
MIN TYP MAX
3.315 3.3 3.465
0.2
0.5V 3.3 3.6
185 235
610 776
UNITS
V
mW
V
mA
mW
22054fb
5
5 Page 
TYPICAL PERFORMANCE CHARACTERISTICS
LTC2205/LTC2204
LTC2205: SFDR vs Input Level,
fIN = 140.1MHz,
www.datasheDeItT4Hu.=co1m, RAND = 1, PGA = 0
130
120
110
100
90
80
70
60
50
40
30
20
–80 –70 –60 –50 –40 –30 –20 –10
INPUT LEVEL (dBFS)
0
22054 G37
LTC2205: SFDR and SNR vs
Sample Rate, fIN = 5.1MHz,
–1dBFS, PGA = 0
110
SFDR
100
90
80
SNR
70
0 10 20 30 40 50 60 70 80 90 100 110
SAMPLE RATE (Msps)
22054 G40
LTC2205: Gain Error Drift with
Internal Reference vs Temperature
1
0
–1
–2
–3
–4
–5
–6
–7
–60 –40 –20 0 20 40 60
TEMPERATURE (°C)
80 100
22054 G43
LTC2205: SFDR vs Input
Frequency, DITH = 0, RAND = 0
110
100
90 PGA = 1
80 PGA = 0
70
0 50 100 150 200 250
INPUT FREQUENCY (MHz)
22054 G38
LTC2205: SFDR and SNR vs
Supply Voltage, fIN = 5.1MHz,
65Msps, PGA = 0
110
SFDR
100
90
80
SNR
70
2.4 2.6 2.8 3.0 3.2 3.4 3.6
SUPPLY VOLTAGE
22054 G41
LTC2205: Gain Drift with External
Reference vs Temperature
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
–1.2
–60 –40 –20 0 20 40 60
TEMPERATURE (°C)
80 100
22054 G44
LTC2205: SNR vs Input Frequency,
DITH = 0, RAND = 0
80
79
78
77
76
PGA = 0
75
74
73
PGA = 1
72
71
70
0
100 200 300
INPUT FREQUENCY (MHz)
400
22054 G39
LTC2205: IVDD vs Sample Rate,
fIN = 5.1MHz, –1dBFS
210
200 VDD = 3.47V
190
180 VDD = 3.3V
170
VDD = 3.13V
160
150
140
130
0 10 20 30 40 50 60 70 80 90 100 110
SAMPLE RATE (Msps)
22054 G42
LTC2205: VCM Drift vs Temperature
0
–1
–2
–3
–4
–40 –20 0
20 40 60
TEMPERATURE (°C)
80
22054 G45
22054fb
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet LTC2204.PDF ] | |
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