Datasheet
ADC141S626
SNAS434B –NOVEMBER 2007–REVISED MARCH 2013
www.ti.com
ADC141S626 Converter Electrical Characteristics
(1)
The following specifications apply for V
A
= V
IO
= V
REF
= +2.7V to 5.5V and f
SCLK
= 0.9 to 3.6 MHz or V
A
= V
IO
= V
REF
= +4.5V
to 5.5V and f
SCLK
= 3.6 to 4.5 MHz; f
IN
= 20 kHz and C
L
= 25 pF, unless otherwise noted. Boldface limits apply for T
A
= T
MIN
to T
MAX
; all other limits are at T
A
= 25°C.
Symbol Parameter Conditions Typical Limits Units
STATIC CONVERTER CHARACTERISTICS
Resolution with No Missing Codes 14 Bits
INL Integral Non-Linearity ±0.5 ±0.95 LSB (max)
DNL Differential Non-Linearity ±0.5 ±0.95 LSB (max)
OE Offset Error −1 ±5 LSB (max)
Positive Full-Scale Error −3 ±7 LSB (max)
FSE
Negative Full-Scale Error 0.5 ±4 LSB (max)
Positive Gain Error −1.5 ±6 LSB (max)
GE
Negative Gain Error 1.5 ±6 LSB (max)
DYNAMIC CONVERTER CHARACTERISTICS
V
A
= V
IO
= V
REF
= +3V, −0.1 dBFS 81.9 80.1 dBc (min)
SINAD Signal-to-Noise Plus Distortion Ratio
V
A
= V
IO
= V
REF
= +5V, −0.1 dBFS 84.2 82 dBc (min)
V
A
= V
IO
= V
REF
= +3V, −0.1 dBFS 82 80.2 dBc (min)
SNR Signal-to-Noise Ratio
V
A
= V
IO
= V
REF
= +5V, −0.1 dBFS 84.3 82 dBc (min)
V
A
= V
IO
= V
REF
= +3V, −0.1 dBFS −102 dBc
THD Total Harmonic Distortion
V
A
= V
IO
= V
REF
= +5V, −0.1 dBFS −102 dBc
V
A
= V
IO
= V
REF
= +3V, −0.1 dBFS 97 dBc
SFDR Spurious-Free Dynamic Range
V
A
= V
IO
= V
REF
= +5V, −0.1 dBFS 101 dBc
V
A
= V
IO
= V
REF
= +3V, −0.1 dBFS 13.3 13.0 bits (min)
ENOB Effective Number of Bits
V
A
= V
IO
= V
REF
= +5V, −0.1 dBFS 13.7 13.3 bits (min)
Differential Input 26 MHz
Output at 70.7%FS
FPBW −3 dB Full Power Bandwidth
Single-Ended
with FS Input
22 MHz
Input
ANALOG INPUT CHARACTERISTICS
−V
REF
V (min)
V
IN
Differential Input Range
+V
REF
V (max)
I
DCL
DC Leakage Current V
IN
= V
REF
or V
IN
= -V
REF
±1 µA (max)
In Acquisition Mode 30 pF
C
INA
Input Capacitance
In Conversion Mode 3 pF
See the Specification Definitions for the
CMRR Common Mode Rejection Ratio 76 dB
test condition
DIGITAL INPUT CHARACTERISTICS
V
IH
Input High Voltage V
IO
= +2.7V to 5.5V 1.9 2.3 V (min)
V
IL
Input Low Voltage V
IO
= +2.7V to 5.5V 1.0 0.7 V (max)
I
IN
Input Current V
IN
= 0V or V
A
±1 µA (max)
C
IND
Input Capacitance 2 4 pF (max)
DIGITAL OUTPUT CHARACTERISTICS
I
SOURCE
= 200 µA V
A
− 0.05 V
A
− 0.2 V (min)
V
OH
Output High Voltage
I
SOURCE
= 1 mA V
A
− 0.16 V
I
SINK
= 200 µA 0.01 0.4 V (max)
V
OL
Output Low Voltage
I
SINK
= 1 mA 0.05 V
I
OZH
, I
OZL
TRI-STATE Leakage Current Force 0V or V
A
±1 µA (max)
C
OUT
TRI-STATE Output Capacitance Force 0V or V
A
2 4 pF (max)
Output Coding Binary 2'S Complement
(1) Typical values are at T
J
= 25°C and represent most likely parametric norms. Test limits are guaranteed to TI's AOQL (Average Outgoing
Quality Level).
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