LINEAR TECHNOLOGY LTC2288, LTC2287, LTC2286 Technical data
FEATURES
■
Integrated Dual 10-Bit ADCs
■
Sample Rate: 65Msps/40Msps/25Msps
■
Single 3V Supply (2.7V to 3.4V)
■
Low Power: 400mW/235mW/150mW
■
61.6dB SNR at 70MHz Input
■
85dB SFDR at 70MHz Input
■
110dB Channel Isolation at 100MHz
■
Multiplexed or Separate Data Bus
■
Flexible Input: 1V
■
575MHz Full Power Bandwidth S/H
■
Clock Duty Cycle Stabilizer
■
Shutdown and Nap Modes
■
Pin Compatible Family
P-P
to 2V
P-P
Range
80Msps: LTC2294 (12-Bit), LTC2289 (10-Bit)
65Msps: LTC2293 (12-Bit), LTC2288 (10-Bit)
40Msps: LTC2292 (12-Bit), LTC2287 (10-Bit)
25Msps: LTC2291 (12-Bit), LTC2286 (10-Bit)
■
64-Pin (9mm × 9mm) QFN Package
U
APPLICATIO S
■
Wireless and Wired Broadband Communication
■
Imaging Systems
■
Spectral Analysis
■
Portable Instrumentation
LTC2288/LTC2287/LTC2286
Dual 10-Bit, 65/40/25Msps
Low Noise 3V ADCs
U
DESCRIPTIO
The LTC®2288/LTC2287/LTC2286 are 10-bit 65Msps/
40Msps/25Msps, low noise dual 3V A/D converters designed for digitizing high frequency, wide dynamic range
signals. The LTC2288/LTC2287/LTC2286 are perfect for
demanding imaging and communications applications
with AC performance that includes 61.6dB SNR and 85dB
SFDR for signals well beyond the Nyquist frequency.
DC specs include ±0.1LSB INL (typ), ±0.05LSB DNL (typ)
and ±0.6 LSB INL, ±0.5 LSB DNL over temperature. The
transition noise is a low 0.07LSB
A single 3V supply allows low power operation. A separate
output supply allows the outputs to drive 0.5V to 3.3V
logic. An optional multiplexer allows both channels to
share one digital output bus.
A single-ended CLK input controls converter operation. 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.
RMS
.
TYPICAL APPLICATIO
ANALOG
INPUT A
CLK A
CLK B
ANALOG
INPUT B
+
INPUT
S/H
–
CLOCK/DUTY CYCLE
CONTROL
CLOCK/DUTY CYCLE
CONTROL
+
INPUT
S/H
–
10-BIT
PIPELINED
ADC CORE
10-BIT
PIPELINED
ADC CORE
U
OUTPUT
DRIVERS
OUTPUT
DRIVERS
228876 TA01
OV
D9A
•
•
•
D0A
OGND
MUX
OV
D9B
•
•
•
D0B
OGND
DD
LTC2288: SNR vs Input Frequency,
–1dB, 2V Range, 65Msps
62.5
61.5
60.5
59.5
SNR (dBFS)
DD
58.5
57.5
50
0
INPUT FREQUENCY (MHz)
100
150
200
228876 TA02
228876f
1
LTC2288/LTC2287/LTC2286
WW
W
U
ABSOLUTE AXI U RATI GS
OVDD = VDD (Notes 1, 2)
Supply Voltage (VDD) ................................................. 4V
Digital Output Ground Voltage (OGND) ....... –0.3V to 1V
Analog Input Voltage (Note 3) ..... –0.3V to (V
Digital Input Voltage .................... –0.3V to (V
Digital Output Voltage ................– 0.3V to (OV
Power Dissipation............................................ 1500mW
Operating Temperature Range
LTC2288C, LTC2287C, LTC2286C........... 0°C to 70°C
LTC2288I, LTC2287I, LTC2286I .......... –40°C to 85°C
Storage Temperature Range ..................–65°C to 125°C
Lead Temperature (Soldering, 10 sec).................. 300°C
+ 0.3V)
DD
+ 0.3V)
DD
+ 0.3V)
DD
UUW
PACKAGE/ORDER I FOR ATIO
TOP VIEW
DD
64 GND
63 VDD62 SENSEA
61 VCMA
60 MODE
59 SHDNA
58 OEA
57 OFA
56 DA9
55 DA8
54 DA7
53 DA6
52 DA5
51 DA4
50 OGND
49 OV
1
A
INA+
–
A
2
INA
REFHA 3
REFHA 4
REFLA 5
REFLA 6
V
7
DD
CLKA
8
CLKB 9
V
10
DD
REFLB 11
REFLB 12
REFHB 13
REFHB 14
–
A
15
INB
+
A
16
INB
19
17
18
DD
V
GND
SENSEB
64-LEAD (9mm × 9mm) PLASTIC QFN
EXPOSED PAD (PIN 65) IS GND AND MUST BE SOLDERED TO PCB
T
65
20
NC 24
OEB 23
MUX 21
VCMB
SHDNB 22
UP PACKAGE
= 125°C, θJA = 20°C/W
JMAX
NC 25
NC 26
NC 27
DB0 28
ORDER PART
NUMBER
DB1 29
48 DA3
47 DA2
46 DA1
45 DA0
44 NC
43 NC
42 NC
41 NC
40 OFB
39 DB9
38 DB8
37 DB7
36 DB6
35 DB5
34 DB4
33 DB3
32
DD
DB2 30
OV
OGND 31
QFN PART*
MARKING
LTC2288CUP
LTC2288IUP
LTC2287CUP
LTC2288UP
LTC2287UP
LTC2286UP
LTC2287IUP
LTC2286CUP
LTC2286IUP
Consult LTC Marketing for parts specified with wider operating temperature ranges.
*The temperature grade is identified by a label on the shipping container.
U
CO VERTER CHARACTERISTICS
temperature range, otherwise specifications are at TA = 25°C. (Note 4)
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS
Resolution ● 10 10 10 Bits
(No Missing Codes)
Integral Linearity Error Differential Analog Input (Note 5) ● –0.6 ±0.1 0.6 – 0.6 ±0.1 0.6 –0.6 ±0.1 0.6 LSB
Differential Differential Analog Input ● – 0.5 ±0.05 0.5 –0.5 ±0.05 0.5 –0.5 ±0.05 0.5 LSB
Linearity Error
Offset Error (Note 6) ● –12 ±212–12±212–12±212 mV
Gain Error External Reference ● –2.5 ±0.5 2.5 –2.5 ±0.5 2.5 –2.5 ±0.5 2.5 %FS
Offset Drift ±10 ±10 ±10 µV/°C
Full-Scale Drift Internal Reference ±30 ±30 ±30 ppm/°C
External Reference ±15 ±15 ±15 ppm/°C
Gain Matching External Reference ±0.3 ±0.3 ±0.3 %FS
Offset Matching ±2 ±2 ±2mV
Transition Noise SENSE = 1V 0.07 0.07 0.07 LSB
The ● denotes the specifications which apply over the full operating
LTC2288 LTC2287 LTC2286
RMS
228876f
2
LTC2288/LTC2287/LTC2286
UU
A ALOG I PUT
specifications are at TA = 25°C. (Note 4)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
V
IN,CM
I
IN
I
SENSE
I
MODE
t
AP
t
JITTER
CMRR Analog Input Common Mode Rejection Ratio 80 dB
U
Analog Input Range (A
Analog Input Common Mode Differential Input (Note 7) ● 1 1.5 1.9 V
Analog Input Leakage Current 0V < A
SENSEA, SENSEB Input Leakage 0V < SENSEA, SENSEB < 1V ● –3 3 µA
MODE Input Leakage Current 0V < MODE < V
Sample-and-Hold Acquisition Delay Time 0 ns
Sample-and-Hold Acquisition Delay Time Jitter 0.2 ps
Full Power Bandwidth Figure 8 Test Circuit 575 MHz
W
DY A IC ACCURACY
otherwise specifications are at TA = 25°C. AIN = –1dBFS. (Note 4)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS
SNR Signal-to-Noise Ratio 5MHz Input 61.8 61.8 61.8 dB
SFDR 5MHz Input 85 85 85 dB
SFDR 5MHz Input 85 85 85 dB
S/(N+D) 5MHz Input 61.8 61.8 61.8 dB
I
MD
Spurious Free
Dynamic Range
2nd or 3rd
Harmonic
Spurious Free
Dynamic Range
4th Harmonic
or Higher
Signal-to-Noise
Plus Distortion
Ratio
Intermodulation
Distortion
Crosstalk fIN = Nyquist –110 –110 –110 dB
The ● denotes the specifications which apply over the full operating temperature range, otherwise
+
–
–A
IN
) 2.7V < V
IN
< 3.4V (Note 7) ● 1V to 2V V
DD
+
–
, A
< V
IN
IN
DD
DD
● –1 1 µA
● –3 3 µA
RMS
The ● denotes the specifications which apply over the full operating temperature range,
LTC2288 LTC2287 LTC2286
12.5MHz Input ● 60 61.8 dB
20MHz Input ● 60 61.8 dB
30MHz Input ● 60 61.8 dB
70MHz Input 61.7 61.7 61.6 dB
140MHz Input 61.6 61.6 61.6 dB
12.5MHz Input ● 69 85 dB
20MHz Input ● 69 85 dB
30MHz Input ● 69 85 dB
70MHz Input 85 85 85 dB
140MHz Input 80 80 80 dB
12.5MHz Input ● 74 85 dB
20MHz Input ● 74 85 dB
30MHz Input ● 74 85 dB
70MHz Input 85 85 85 dB
140MHz Input 85 85 85 dB
12.5MHz Input ● 60 61.8 dB
20MHz Input ● 60 61.7 dB
30MHz Input ● 60 61.8 dB
70MHz Input 61.7 61.6 61.6 dB
140MHz Input 61.6 61.6 61.5 dB
fIN = Nyquist, 85 85 85 dB
Nyquist + 1MHz
228876f
3
LTC2288/LTC2287/LTC2286
UU U
I TER AL REFERE CE CHARACTERISTICS
PARAMETER CONDITIONS MIN TYP MAX UNITS
VCM Output Voltage I
VCM Output Tempco ±30 ppm/°C
VCM Line Regulation 2.7V < VDD < 3.3V 3 mV/V
VCM Output Resistance –1mA < I
= 0 1.475 1.500 1.525 V
OUT
(Note 4)
< 1mA 4 Ω
OUT
UU
DIGITAL I PUTS A D DIGITAL OUTPUTS
full operating temperature range, otherwise specifications are at TA = 25°C. (Note 4)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
LOGIC INPUTS (CLK, OE, SHDN, MUX)
V
IH
V
IL
I
IN
C
IN
LOGIC OUTPUTS
OVDD = 3V
C
OZ
I
SOURCE
I
SINK
V
OH
V
OL
OV
= 2.5V
DD
V
OH
V
OL
OVDD = 1.8V
V
OH
V
OL
High Level Input Voltage VDD = 3V ● 2V
Low Level Input Voltage VDD = 3V ● 0.8 V
Input Current VIN = 0V to V
Input Capacitance (Note 7) 3 pF
Hi-Z Output Capacitance OE = High (Note 7) 3 pF
Output Source Current V
Output Sink Current V
High Level Output Voltage IO = –10µA 2.995 V
Low Level Output Voltage IO = 10µA 0.005 V
High Level Output Voltage IO = –200µA 2.49 V
Low Level Output Voltage IO = 1.6mA 0.09 V
High Level Output Voltage IO = –200µA 1.79 V
Low Level Output Voltage IO = 1.6mA 0.09 V
= 0V 50 mA
OUT
= 3V 50 mA
OUT
= –200µA ● 2.7 2.99 V
I
O
= 1.6mA ● 0.09 0.4 V
I
O
The ● denotes the specifications which apply over the
DD
● –10 10 µA
4
228876f
LTC2288/LTC2287/LTC2286
WU
POWER REQUIRE E TS
range, otherwise specifications are at T
SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS
V
OV
IV
P
P
P
DD
DD
DD
DISS
SHDN
NAP
Analog Supply (Note 9) ● 2.7 3 3.4 2.7 3 3.4 2.7 3 3.4 V
Voltage
Output Supply (Note 9) ● 0.5 3 3.6 0.5 3 3.6 0.5 3 3.6 V
Voltage
Supply Current Both ADCs at f
Power Dissipation Both ADCs at f
Shutdown Power SHDN = H, 2 2 2 mW
(Each Channel) OE = H, No CLK
Nap Mode Power SHDN = H, 15 15 15 mW
(Each Channel) OE = L, No CLK
= 25°C. (Note 8)
A
The ● denotes the specifications which apply over the full operating temperature
LTC2288 LTC2287 LTC2286
S(MAX)
S(MAX)
● 133 150 78 95 50 60 mA
● 400 450 235 285 150 180 mW
UW
TI I G CHARACTERISTICS
range, otherwise specifications are at TA = 25°C. (Note 4)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS
f
s
t
L
t
H
t
AP
t
D
t
MD
Pipeline 6 6 6 Cycles
Latency
Sampling Frequency (Note 9) ● 165140125MHz
CLK Low Time Duty Cycle Stabilizer Off ● 7.3 7.7 500 11.8 12.5 500 18.9 20 500 ns
Duty Cycle Stabilizer On
(Note 7)
CLK High Time Duty Cycle Stabilizer Off ● 7.3 7.7 500 11.8 12.5 500 18.9 20 500 ns
Duty Cycle Stabilizer On
(Note 7)
Sample-and-Hold 0 0 0 ns
Aperture Delay
CLK to DATA Delay CL = 5pF (Note 7) ● 1.4 2.7 5.4 1.4 2.7 5.4 1.4 2.7 5.4 ns
MUX to DATA Delay CL = 5pF (Note 7) ● 1.4 2.7 5.4 1.4 2.7 5.4 1.4 2.7 5.4 ns
Data Access Time CL = 5pF (Note 7) ● 4.3 10 4.3 10 4.3 10 ns
After OE↓
BUS Relinquish Time (Note 7) ● 3.3 8.5 3.3 8.5 3.3 8.5 ns
The ● denotes the specifications which apply over the full operating temperature
LTC2288 LTC2287 LTC2286
● 5 7.7 500 5 12.5 500 5 20 500 ns
● 5 7.7 500 5 12.5 500 5 20 500 ns
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
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 V
will be clamped by internal diodes. This product can handle input currents
of greater than 100mA below GND or above V
Note 4: VDD = 3V, f
25MHz (LTC2286), input range = 2V
otherwise noted.
= 65MHz (LTC2288), 40MHz (LTC2287), or
SAMPLE
with differential drive, unless
P-P
without latchup.
DD
DD
, they
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 00 0000 0000 and 11 1111 1111.
Note 7: Guaranteed by design, not subject to test.
Note 8: V
25MHz (LTC2286), input range = 1V
current and power dissipation are the sum total for both channels with
both channels active.
Note 9: Recommended operating conditions.
= 3V, f
DD
= 65MHz (LTC2288), 40MHz (LTC2287), or
SAMPLE
with differential drive. The supply
P-P
228876f
5
LTC2288/LTC2287/LTC2286
CODE
70000
60000
50000
40000
30000
20000
10000
0
512
65520
513
228876 G09
511
0
0
COUNT
UW
TYPICAL PERFOR A CE CHARACTERISTICS
LTC2288/LTC2287/LTC2286:
Crosstalk vs Input Frequency
–100
–105
–110
–115
CROSSTALK (dB)
–120
–125
–130
0
20 40 60 80
INPUT FREQUENCY (MHz)
LTC2288: 8192 Point FFT,
fIN = 5MHz, –1dB, 2V Range,
65Msps
0
–10
–20
–30
–40
–50
–60
–70
–80
AMPLITUDE (dB)
–90
–100
–110
–120
0
5
15
10
FREQUENCY (MHz)
LTC2288: 8192 Point FFT,
fIN = 140MHz, –1dB, 2V Range,
65Msps
0
–10
–20
–30
–40
–50
–60
–70
–80
AMPLITUDE (dB)
–90
–100
–110
–120
6
15
0
10
5
FREQUENCY (MHz)
LTC2288: Typical INL,
2V Range, 65Msps
1.00
0.75
0.50
0.25
0
–0.25
INL ERROR (LSB)
–0.50
–0.75
228876 G01
100
–1.00
0
256
512
CODE
768
1024
228876 G02
LTC2288: 8192 Point FFT,
fIN = 30MHz, –1dB, 2V Range,
65Msps
0
–10
–20
–30
–40
–50
–60
–70
–80
AMPLITUDE (dB)
–90
–100
–110
–120
20
25
30
228876 G04
0
10
5
FREQUENCY (MHz)
20
15
25
30
228876 G05
LTC2288: Typical DNL,
2V Range, 65Msps
1.00
0.75
0.50
0.25
0
–0.25
DNL ERROR (LSB)
–0.50
–0.75
–1.00
0
256
512
CODE
LTC2288: 8192 Point FFT,
fIN = 70MHz, –1dB, 2V Range,
65Msps
0
–10
–20
–30
–40
–50
–60
–70
–80
AMPLITUDE (dB)
–90
–100
–110
–120
0
5
15
10
FREQUENCY (MHz)
768
20
1024
22876 G03
25
30
228876 G06
LTC2288: 8192 Point 2-Tone FFT,
f
= 28.2MHz and 26.8MHz,
IN
–1dB, 2V Range 65Msps
0
–10
–20
–30
–40
–50
–60
–70
–80
AMPLITUDE (dB)
–90
–100
–110
20
25
30
228876 G07
–120
0
10
5
FREQUENCY (MHz)
25
30
228876 G08
20
15
LTC2288: Grounded Input
Histogram, 65Msps
228876f
LTC2288/LTC2287/LTC2286
UW
TYPICAL PERFOR A CE CHARACTERISTICS
LTC2288: SNR vs Input Frequency,
–1dB, 2V Range, 65Msps
62.5
61.5
60.5
LTC2288: SFDR vs Input Frequency,
–1dB, 2V Range, 65Msps
100
95
90
85
LTC2288: SNR and SFDR vs
Sample Rate, 2V Range,
f
= 5MHz, –1dB
IN
100
90
80
SFDR
59.5
SNR (dBFS)
58.5
57.5
0
50
INPUT FREQUENCY (MHz)
100
150
200
228876 G10
LTC2288: SNR vs Input Level,
fIN = 30MHz, 2V Range, 65Msps
80
70
60
50
40
30
SNR (dBc AND dBFS)
20
10
0
–50 –40
–60
LTC2288: I
dBFS
–30
INPUT LEVEL (dBFS)
vs Sample Rate,
VDD
5MHz Sine Wave Input, –1dB
155
dBc
–20
80
SFDR (dBFS)
75
70
65
0
–10
0
228876 G13
50 100 200
INPUT FREQUENCY (MHz)
150
228876 G11
LTC2288: SFDR vs Input Level,
fIN = 30MHz, 2V Range, 65Msps
120
110
100
90
80
70
60
50
40
SFDR (dBc AND dBFS)
30
20
10
0
–60
–50
LTC2288: I
5MHz Sine Wave Input, –1dB,
O
= 1.8V
VDD
12
70
SNR AND SFDR (dBFS)
60
50
10 20 30
0
dBFS
dBc
80dBc SFDR
REFERENCE LINE
–40 –30
INPUT LEVEL (dBFS)
OVDD
–20
vs Sample Rate,
SNR
60 70 90 100
40 50
SAMPLE RATE (Msps)
–10 0
228876 G14
80
110
228876 G12
145
135
(mA)
125
VDD
I
115
105
95
2V RANGE
0
10 30
20
40
SAMPLE RATE (Msps)
1V RANGE
50
10
8
(mA)
6
OVDD
I
4
2
70
60
80
228876 G15
0
0
10 30
20
SAMPLE RATE (Msps)
70
40
60
50
228876 G16
80
228876f
7
LTC2288/LTC2287/LTC2286
UW
TYPICAL PERFOR A CE CHARACTERISTICS
LTC2287: Typical INL,
2V Range, 40Msps
1.00
0.75
0.50
0.25
0
–0.25
INL ERROR (LSB)
–0.50
–0.75
–1.00
0
256
512
CODE
LTC2287: 8192 Point FFT,
fIN = 30MHz, –1dB, 2V Range,
40Msps
0
–10
–20
–30
–40
–50
–60
–70
AMPLITUDE (dB)
–80
–90
–100
–110
–120
0
5
10
FREQUENCY (MHz)
LTC2287: 8192 Point 2-Tone FFT,
fIN = 21.6MHz and 23.6MHz,
–1dB, 2V Range, 40Msps
0
–10
–20
–30
–40
–50
–60
–70
AMPLITUDE (dB)
–80
–90
–100
–110
–120
0
5
10
FREQUENCY (MHz)
768
15
15
1024
228876 G17
20
228876 G20
20
228876 G23
LTC2287: Typical DNL,
2V Range, 40Msps
1.00
0.75
0.50
0.25
0
–0.25
DNL ERROR (LSB)
–0.50
–0.75
–1.00
0
256
512
CODE
LTC2287: 8192 Point FFT,
fIN = 70MHz, –1dB, 2V Range,
40Msps
0
–10
–20
–30
–40
–50
–60
–70
AMPLITUDE (dB)
–80
–90
–100
–110
–120
0
5
10
FREQUENCY (MHz)
LTC2287: Grounded Input
Histogram, 40Msps
70000
60000
50000
40000
COUNT
30000
20000
10000
0
0
510
65520
511
CODE
768
15
0
512
228876 G18
228876 G21
228876 G24
1024
20
LTC2287: 8192 Point FFT,
fIN = 5MHz, –1dB, 2V Range,
40Msps
0
–10
–20
–30
–40
–50
–60
–70
AMPLITUDE (dB)
–80
–90
–100
–110
–120
0
5
10
FREQUENCY (MHz)
LTC2287: 8192 Point FFT,
fIN = 140MHz, –1dB, 2V Range,
40Msps
0
–10
–20
–30
–40
–50
–60
–70
AMPLITUDE (dB)
–80
–90
–100
–110
–120
0
5
10
FREQUENCY (MHz)
LTC2287: SNR vs Input Frequency,
–1dB, 2V Range, 40Msps
62.5
61.5
60.5
59.5
SNR (dBFS)
58.5
57.5
0
50
INPUT FREQUENCY (MHz)
100
150
15
15
20
228876 G19
20
228876 G22
200
228876 G25
228876f
8
LTC2288/LTC2287/LTC2286
FREQUENCY (MHz)
0
AMPLITUDE (dB)
–80
–20
–10
0
4
8
10
228876 G34
–100
–110
–40
–60
–90
–30
–120
–50
–70
2
6
12
UW
TYPICAL PERFOR A CE CHARACTERISTICS
LTC2287: SNR and SFDR vs
LTC2287: SFDR vs Input Frequency,
–1dB, 2V Range, 40Msps
100
95
90
85
80
SFDR (dBFS)
75
70
65
50 100 200
0
INPUT FREQUENCY (MHz)
150
228876 G26
Sample Rate, 2V Range,
fIN = 5MHz, –1dB
100
90
80
70
SNR AND SFDR (dBFS)
60
50
10 20 30
0
SAMPLE RATE (Msps)
SFDR
SNR
40 50
60 70
228876 G27
80
LTC2287: SNR vs Input Level,
fIN = 5MHz, 2V Range, 40Msps
80
70
60
50
40
30
SNR (dBc AND dBFS)
20
10
0
–50 –40
–60
dBFS
dBc
–30
INPUT LEVEL (dBFS)
–20
–10
0
228876 G28
LTC2287: SFDR vs Input Level,
fIN = 5MHz, 2V Range, 40Msps
120
110
100
90
80
70
60
50
40
SFDR (dBc AND dBFS)
30
20
10
0
–60
–50
dBFS
dBc
–40 –30
INPUT LEVEL (dBFS)
LTC2286: Typical INL,
2V Range, 25Msps
1.00
0.75
0.50
0.25
0
–0.25
INL ERROR (LSB)
–0.50
–0.75
–1.00
0
256
512
CODE
80dBc SFDR
REFERENCE LINE
–20
–10 0
228876 G29
768
228876 G32
1024
LTC2287: I
vs Sample Rate,
VDD
5MHz Sine Wave Input, –1dB
100
90
(mA)
VDD
I
80
70
60
0
2V RANGE
10
20
SAMPLE RATE (Msps)
LTC2286: Typical DNL,
2V Range, 25Msps
1.00
0.75
0.50
0.25
0
–0.25
DNL ERROR (LSB)
–0.50
–0.75
–1.00
0
256
512
CODE
1V RANGE
30
768
40
228876 G30
228876 G33
50
1024
LTC2287: I
vs Sample Rate,
OVDD
5MHz Sine Wave Input, –1dB,
O
= 1.8V
VDD
8
6
(mA)
4
OVDD
I
2
0
10
0
20
SAMPLE RATE (Msps)
LTC2286: 8192 Point FFT,
fIN = 5MHz, –1dB, 2V Range,
25Msps
30
40
50
228876 G31
228876f
9
Loading...