ADC14C105_15 Datasheet, PDF (10/33 Pages) Texas Instruments – 95/105 MSPS A/D Converter

ADC14C105
SNAS409C – MAY 2007 – REVISED MARCH 2013
www.ti.com
Dynamic Converter Electrical Characteristics at 95MSPS
Unless otherwise specified, the following specifications apply: AGND = DRGND = 0V, V_A = +3.3V, V_DR = +2.5V, Internal V_REF
= +1.2V, f_CLK = 95 MHz, 50% Duty Cycle, DCS disabled, V_CM = V_CMO, C_L = 5 pF/pin, . Typical values are for T_A = 25°C.
Boldface limits apply for T_MIN ≤ T_A ≤ T_MAX. All other limits apply for T_A = 25°C⁽¹⁾⁽²⁾
Parameter
Test Conditions
Typical⁽³⁾ Limits
Units
(Limits) ⁽⁴⁾
DYNAMIC CONVERTER CHARACTERISTICS, A_IN= -1dBFS
f_IN = 10 MHz
SNR
Signal-to-Noise Ratio
f_IN = 70 MHz
f_IN = 240 MHz
f_IN = 10 MHz
SFDR Spurious Free Dynamic Range
f_IN = 70 MHz
f_IN = 240 MHz
f_IN = 10 MHz
ENOB Effective Number of Bits
f_IN = 70 MHz
f_IN = 240 MHz
f_IN = 10 MHz
THD
Total Harmonic Disortion
f_IN = 70 MHz
f_IN = 240 MHz
f_IN = 10 MHz
H2
Second Harmonic Distortion
f_IN = 70 MHz
f_IN = 240 MHz
f_IN = 10 MHz
H3
Third Harmonic Distortion
f_IN = 70 MHz
f_IN = 240 MHz
f_IN = 10 MHz
SINAD Signal-to-Noise and Distortion Ratio
f_IN = 70 MHz
f_IN = 240 MHz
POWER SUPPLY CHARACTERISTICS
74
dBFS
73.5
dBFS
71
dBFS
90
dBFS
86
dBFS
82
dBFS
11.9
Bits
11.8
Bits
11.4
Bits
−86
dBFS
−85
dBFS
−80
dBFS
-95
dBFS
−90
dBFS
−85
dBFS
−90
dBFS
−86
dBFS
−83
dBFS
73.5
dBFS
73
dBFS
70.5
dBFS
I_A
Analog Supply Current
I_DR
Digital Output Supply Current
Power Consumption
Full Operation
Full Operation⁽⁵⁾
Excludes I_DR(5)
115
mA (max)
14.5
mA
380
mW (max)
(1) The inputs are protected as shown below. Input voltage magnitudes above V_A or below GND will not damage this device, provided
current is limited per Note 4 of the Absolute Maximum Ratings Table. However, errors in the A/D conversion can occur if the input goes
above 2.6V or below GND as described in the Operating Ratings section. See Figure 2.
(2) With a full scale differential input of 2V_P-P , the 14-bit LSB is 122.1 µV.
(3) Typical figures are at T_A = 25°C and represent most likely parametric norms at the time of product characterization. The typical
specifications are not ensured.
(4) Parameters specified in dBFS indicate the value that would be attained with a full-scale input signal.
(5) I_DR is the current consumed by the switching of the output drivers and is primarily determined by load capacitance on the output pins,
the supply voltage, V_DR, and the rate at which the outputs are switching (which is signal dependent). I_DR=V_DR(C₀ x f₀ + C₁ x f₁ +....C₁₃ x
f₁₃) where V_DR is the output driver power supply voltage, C_n is total capacitance on the output pin, and f_n is the average frequency at
which that pin is toggling.
V_A
I/O
To Internal Circuitry
AGND
Figure 2.
10
Submit Documentation Feedback
Product Folder Links: ADC14C105
Copyright © 2007–2013, Texas Instruments Incorporated