Datasheet
ADC12EU050
SNAS444I –JANUARY 2008–REVISED APRIL 2013
www.ti.com
OPERATING RATINGS
(1)(2)
Operating Temperature Range 0°C to +70°C
Supply Voltage (V
A
=V
D
) +1.16 to +1.26V
IO Supply Voltage (V
DR
) +1.16 to +1.89V
Minimum rise time on V
A
, V
D
, V
DR
at power-up 40µs
Analog Inputs (V
IN
N+, V
IN
N-) -0.10 to V
A
SPI Inputs (S
DATA
, S
SEL
, S
CLK
) +1.16 to +2.50V
V
REFT
(When using external reference) 475mV to 525mV
V
REFB
AGND
V
CM
Input Common Mode Range (Differential Input) 0.4V to 1.2V
Ground Difference |AGND-DGND| <50mV
(1) Operating Ratings indicate conditions for which the device is specified to be functional, but do not specify specific performance limits.
Specifications and test conditions are specified in the Electrical Characteristics section. Operation of the device beyond the Operating
Ratings is not recommended as it may degrade the device lifetime.
(2) All voltages are measured with respect to GND = AGND = DGND = 0V, unless otherwise specified.
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, the following conditions apply: V
A
= V
D
= 1.2V; V
DR
= 1.2V; V
REF
= internal; R
REF
= 10kohm ±1%;
C
L
= 5pF; 100Ω terminated at the receiver; f
CLK
= 45MHz; f
S
= 45MSPS. Boldface limits apply for T
A
= T
MIN
to T
MAX
; All other
limits apply for T
A
= +25°C.
Symbol Parameter Conditions Typical
(1)
Limits Units
Static Converter Characteristics
Resolution (No missing codes
12 Bits
ensured)
INL Integral Non Linearity ±0.75 ±3.0 LSB
DNL Differential Non Linearity ±0.35 ±0.75 LSB
PSE Positive Full Scale Error ±0.66 ±3 %FS
NSE Negative Full Scale Error ±0.58 ±3 %FS
GE Gain Error ±1.23 %FS
Dynamic Converter Characteristics – Instant Overload Recovery (IOR) Off
f
CLK
= 45MHz, f
IN
= 4.4MHz, V
IN
= -0.5dBFS 69.3 67.0 dBFS (min)
SNR Signal to Noise Ratio
(2)
f
CLK
= 45MHz, f
IN
= 9.5MHz, V
IN
= -0.5dBFS 69.0 dBFS
f
CLK
= 45MHz, f
IN
= 4.4MHz, V
IN
= -0.5dBFS 68.5 62.5 dBFS (min)
SINAD Signal to Noise and Distortion
(2)
f
CLK
= 45MHz, f
IN
= 9.5MHz, V
IN
= -0.5dBFS 68.5 dBFS
f
CLK
= 45MHz, f
IN
= 4.4MHz, V
IN
= -0.5dBFS 11.1 10.1 Bits (min)
ENOB Effective Number of Bits
f
CLK
= 45MHz, f
IN
= 9.5MHz, V
IN
= -0.5dBFS 11.1 Bits
f
CLK
= 45MHz, f
IN
= 4.4MHz, V
IN
= -0.5dBFS -76 -65 dBc (max)
THD Total Harmonic Distortion
f
CLK
= 45MHz, f
IN
= 9.5MHz, V
IN
= -0.5dBFS -78 dBc
f
CLK
= 45MHz, f
IN
= 4.4MHz, V
IN
= -0.5dBFS -81 -66 dBc (max)
H2 Second Harmonic Distortion
f
CLK
= 45MHz, f
IN
= 9.5MHz, V
IN
= -0.5dBFS -79 dBc
f
CLK
= 45MHz, f
IN
= 4.4MHz, V
IN
= -0.5dBFS -83 -67 dBc (max)
H3 Third Harmonic Distortion
f
CLK
= 45MHz, f
IN
= 9.5MHz, V
IN
= -0.5dBFS -97 dBc
f
CLK
= 45MHz, f
IN
= 4.4MHz, V
IN
= -0.5dBFS 77 66 dBc (min)
SFDR Spurious Free Dynamic Range
f
CLK
= 45MHz, f
IN
= 9.5MHz, V
IN
= -0.5dBFS 78 dBc
f
1
= 9.6MHz, V
IN
= -6dBFS
IMD Intermodulation Distortion -70 dBFS
f
2
= 10.1MHz, V
IN
= -6dBFS
(1) Typical figures are at TA = 25°C, and represent most likely parametric norms at the time of product characterization. The typical
specifications are not ensured.
(2) This parameter is specified in dBFS. This indicates the value which would be obtained with a full-scale input.
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