MAX19711ETN+T Maxim Integrated Products, MAX19711ETN+T Datasheet - Page 34

• Manufacturer Part Number: MAX19711ETN+T
• Description: IC ANLG FRNT END 56-TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX19711ETN+T

• Number Of Bits: 10
• Number Of Channels: 2
• Power (watts): 37.5mW
• Voltage - Supply, Analog: 3V
• Voltage - Supply, Digital: 3V
• Package / Case: 56-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

10-Bit, 11Msps, Full-Duplex
Analog Front-End
In reality, there are other noise sources besides quanti-
zation noise: thermal noise, reference noise, clock jitter,
etc. SNR is computed by taking the ratio of the RMS
signal to the RMS noise. RMS noise includes all spec-
tral components to the Nyquist frequency excluding the
fundamental, the first five harmonics, and the DC offset.
SINAD is computed by taking the ratio of the RMS sig-
nal to the RMS noise. RMS noise includes all spectral
components to the Nyquist frequency excluding the
fundamental and the DC offset.
ENOB specifies the dynamic performance of an ADC at a
specific input frequency and sampling rate. An ideal
ADC’s error consists of quantization noise only. ENOB for
a full-scale sinusoidal input waveform is computed from:
THD is typically the ratio of the RMS sum of the first five
harmonics of the input signal to the fundamental itself.
This is expressed as:
where V
the amplitudes of the 2nd- through 6th-order harmonics.
HD3 is defined as the ratio of the RMS value of the third
harmonic component to the fundamental input signal.
SFDR is the ratio expressed in decibels of the RMS
amplitude of the fundamental (maximum signal compo-
nent) to the RMS value of the next-largest spurious
component, excluding DC offset.
IMD is the total power of the intermodulation products rel-
ative to the total input power when two tones, f
f
ucts are (f
(2
-7dBFS.
34
IN2
✕
, are present at the inputs. The intermodulation prod-
______________________________________________________________________________________
f
IN2
THD
1
± f
IN1
is the fundamental amplitude and V
=
IN1
ENOB = (SINAD - 1.76) / 6.02
± f
20 x log
Signal-to-Noise and Distortion (SINAD)
Spurious-Free Dynamic Range (SFDR)
). The individual input tone levels are at
IN2
), (2
Effective Number of Bits (ENOB)
Third Harmonic Distortion (HD3)
Intermodulation Distortion (IMD)
Total Harmonic Distortion (THD)
⎡
⎢
⎢
⎣
✕
(V + V + V + V + V )
f
IN1
2
2
), (2
3
2
✕
V
f
IN2
4
1
2
), (2
5
2
✕
f
IN1
6
2
2
–V
IN1
⎤
⎥
⎥
⎦
± f
6
IN2
and
are
),
IM3 is the power of the worst 3rd-order intermodulation
product relative to the input power of either input tone
when two tones, f
The 3rd-order intermodulation products are (2 x f
f
are at -7dBFS.
Power-supply rejection is defined as the shift in offset
and gain error when the power supply is changed ±5%.
A small -20dBFS analog input signal is applied to an
ADC in such a way that the signal’s slew rate does not
limit the ADC’s performance. The input frequency is
then swept up to the point where the amplitude of the
digitized conversion result has decreased by 3dB. Note
that the T/H performance is usually the limiting factor
for the small-signal input bandwidth.
A large -0.5dBFS analog input signal is applied to an
ADC, and the input frequency is swept up to the point
where the amplitude of the digitized conversion result
has decreased by 3dB. This point is defined as the full-
power bandwidth frequency.
THD is the ratio of the RMS sum of the output harmonics
up to the Nyquist frequency divided by the fundamental:
where V
V
up to the Nyquist frequency.
Spurious-free dynamic range (SFDR) is the ratio of RMS
amplitude of the fundamental (maximum signal compo-
nent) to the RMS value of the next-largest distortion
component up to the Nyquist frequency excluding DC.
IN2
n
are the amplitudes of the 2nd through nth harmonic
), f
IN2
THD
1
DAC Dynamic Parameter Definitions
(2
is the fundamental amplitude and V
✕
=
f
IN2
20 x log
IN1
± f
IN1
and f
3rd-Order Intermodulation (IM3)
Spurious-Free Dynamic Range
⎡
⎢
⎢
⎣
). The individual input tone levels
(V + V + ...+ V )
IN2
2
Total Harmonic Distortion
2
, are present at the inputs.
Power-Supply Rejection
Small-Signal Bandwidth
Full-Power Bandwidth
3
2
V
1
n
2
⎤
⎥
⎥
⎦
2
through
IN1
±