MAX1183ECM+TD Maxim Integrated Products, MAX1183ECM+TD Datasheet - Page 16

• Manufacturer Part Number: MAX1183ECM+TD
• Description: IC ADC 10BIT 40MSPS DL 48-TQFP
• Manufacturer: Maxim Integrated Products

Specifications of MAX1183ECM+TD

• Number Of Bits: 10
• Sampling Rate (per Second): 40M
• Data Interface: Parallel
• Number Of Converters: 2
• Power Dissipation (max): 180mW
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 48-TQFP Exposed Pad, 48-eTQFP, 48-HTQFP, 48-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

(1Ω to 5Ω), a ferrite bead, or a direct short. Alternatively,
all ground pins could share the same ground plane, if the
ground plane is sufficiently isolated from any noisy, digital
systems ground plane (e.g. downstream output buffer or
DSP ground plane). Route high-speed digital signal
traces away from the sensitive analog traces of either
channel. Make sure to isolate the analog input lines to
each respective converter to minimize channel-to-chan-
nel crosstalk. Keep all signal lines short and free of 90
degree turns.
Integral nonlinearity is the deviation of the values on an
actual transfer function from a straight line. This straight
line can be either a best straight-line fit or a line drawn
between the endpoints of the transfer function, once
offset and gain errors have been nullified. The static lin-
earity parameters for the MAX1183 are measured using
the best straight-line fit method.
Differential nonlinearity is the difference between an
actual step width and the ideal value of 1LSB. A DNL
error specification of less than 1LSB guarantees no
missing codes and a monotonic transfer function.
Figure 9 depicts the aperture jitter (t
sample-to-sample variation in the aperture delay.
Dual 10-Bit, 40Msps, 3V, Low-Power ADC with
Internal Reference and Parallel Outputs
Figure 8. Typical QAM Application, Using the MAX1183
16
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Dynamic Parameter Definitions
Static Parameter Definitions
Differential Nonlinearity (DNL)
Integral Nonlinearity (INL)
Aperture Jitter
DOWNCONVERTER
AJ
), which is the
Aperture delay (t
falling edge of the sampling clock and the instant when
an actual sample is taken (Figure 9).
For a waveform perfectly reconstructed from digital sam-
ples, the theoretical maximum SNR is the ratio of the full-
scale analog input (RMS value) to the RMS quantization
error (residual error). The ideal, theoretical minimum ana-
log-to-digital noise is caused by quantization error only
and results directly from the ADC’s resolution (N-Bits):
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, which includes all spectral
components minus the fundamental, the first five har-
monics, and the DC offset.
MAX2451
Figure 9. T/H Aperture Timing
÷ 8
DATA (T/H)
SAMPLED
ANALOG
0°
INPUT
90°
CLK
SNR
T/H
t
AD
dB[max]
TRACK
AD
Signal-to-Noise Ratio (SNR)
) is the time defined between the
= 6.02
INA+
INA-
INB+
INB-
MAX1183
t
AJ
HOLD
✕
N + 1.76
Aperture Delay
TRACK
PROCESSING
POST-
DSP