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ADC12L066 Datasheet(PDF) 6 Page - Texas Instruments

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Part # ADC12L066
Description  12-Bit, 20 MSPS, 185 mW A/D Converter with Internal Sample-and-Hold
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

ADC12L066 Datasheet(HTML) 6 Page - Texas Instruments

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ADC12020
SNAS186B – APRIL 2003 – REVISED MARCH 2013
www.ti.com
CONVERTER ELECTRICAL CHARACTERISTICS
Unless otherwise specified, the following specifications apply for AGND = DGND = DR GND = 0V, VA = VD = +5V, VDR =
+3.0V, PD = 0V, VREF = +2.0V, fCLK = 20 MHz, tr = tf = 3 ns, CL = 25 pF/pin. Boldface limits apply for TJ = TMIN to TMAX: all
other limits TA = TJ = 25°C
(1) (2) (3)
Units
Symbol
Parameter
Conditions
Typical (4)
Limits (4)
(Limits)
STATIC CONVERTER CHARACTERISTICS
Resolution with No Missing Codes
12
Bits (min)
+1.7
LSB (max)
INL
Integral Non Linearity (5)
±0.55
-1.4
LSB (min)
+0.9
LSB (max)
DNL
Differential Non Linearity
±0.35
-1.0
LSB (min)
GE
Gain Error
±0.05
2.9
%FS (max)
Offset Error (VIN+ = VIN−)
−0.04
±1.75
%FS (max)
Under Range Output Code
0
0
Over Range Output Code
4095
4095
DYNAMIC CONVERTER CHARACTERISTICS
FPBW
Full Power Bandwidth
0 dBFS Input, Output at
−3 dB
100
MHz
fIN = 1 MHz, VIN = −0.5 dBFS
70
dB
SNR
Signal-to-Noise Ratio
fIN = 4.4 MHz, VIN = −0.5 dBFS
70
dB
fIN = 10.1 MHz, VIN = −0.5 dBFS
70
67
dB (min)
fIN = 1 MHz, VIN = −0.5 dBFS
70
dB
SINAD
Signal-to-Noise and Distortion
fIN = 4.4 MHz, VIN = −0.5 dBFS
70
dB
fIN = 10.1MHz, VIN = −0.5 dBFS
69
67
dB (min)
fIN = 1 MHz, VIN = −0.5 dBFS
11.3
dB
ENOB
Effective Number of Bits
fIN = 4.4 MHz, VIN = −0.5 dBFS
11.3
dB
fIN = 10.1 MHz, VIN = −0.5 dBFS
11.3
10.8
dB (min)
fIN = 1 MHz, VIN = −0.5 dBFS
−83
dB
fIN = 4.4 MHz, VIN = −0.5 dBFS
−83
dB
THD
Total Harmonic Distortion
+25°C
−83
-74
dB (min)
fIN = 10.1 MHz,
VIN = −0.5 dBFS
+85°C
-71
dB (min)
fIN = 1 MHz, VIN = −0.5 dBFS
86
dB
fIN = 4.4 MHz, VIN = −0.5 dBFS
86
dB
SFDR
Spurious Free Dynamic Range
+25°C
86
71
dB (min)
fIN = 10.1 MHz,
VIN = −0.5 dBFS
+85°C
68
dB (min)
IMD
Intermodulation Distortion
fIN = 4.7 MHz and 5.3 MHz, each = −7 dBFS
−73
dBFS
REFERENCE AND ANALOG INPUT CHARACTERISTICS
VCM
Common Mode Input Voltage
VA/2
V
(CLK LOW)
8
pF
CIN
VIN Input Capacitance (each pin to GND)
VIN = 2.5 Vdc + 0.7 Vrms
(CLK HIGH)
7
pF
1.0
V (min)
VREF
Reference Voltage (6)
2.00
2.4
V (max)
Reference Input Resistance
100
M
Ω(min)
(1)
The inputs are protected as shown below. Input voltage magnitudes above VA or below GND will not damage this device, provided
current is limited per ABSOLUTE MAXIMUM RATINGS (3). However, errors in the A/D conversion can occur if the input goes above VA
or below GND by more than 100 mV. As an example, if V is 4.75V, the full-scale input voltage must be
≤4.85V to ensure accurate
conversions.
(2)
To ensure accuracy, Ait is required that |VA–VD| ≤ 100 mV and separate bypass capacitors are used at each power supply pin.
(3)
With the test condition for VREF = +2.0V (4VP-P differential input), the 12-bit LSB is 977 µV.
(4)
Typical figures are at TA = TJ = 25°C, and represent most likely parametric norms. Test limits are specified to TI's AOQL (Average
Outgoing Quality Level).
(5)
Integral Non Linearity is defined as the deviation of the analog value, expressed in LSBs, from the straight line that passes through
positive and negative full-scale.
(6)
Optimum performance will be obtained by keeping the reference input in the 1.8V to 2.2V range. The LM4051CIM3-ADJ (SOT-23
package) is recommended for this application.
6
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Copyright © 2003–2013, Texas Instruments Incorporated
Product Folder Links: ADC12020


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