MAX1185ECM+D Maxim Integrated Products, MAX1185ECM+D Datasheet - Page 17

• Manufacturer Part Number: MAX1185ECM+D
• Description: IC ADC 10BIT 20MSPS DUAL 48-TQFP
• Manufacturer: Maxim Integrated Products

Specifications of MAX1185ECM+D

• Number Of Bits: 10
• Sampling Rate (per Second): 20M
• Number Of Converters: 2
• Power Dissipation (max): 2.43W
• 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

Figure 7. Using an Op Amp for Single-Ended, AC-Coupled Input Drive
quantization error (residual error). The ideal, theoretical
minimum analog-to-digital noise is caused by quantiza-
tion error only and results directly from the ADC’s reso-
lution (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
Internal Reference and Multiplexed Parallel Outputs
SNR
Dual 10-Bit, 20Msps, 3V, Low-Power ADC with
dB[max]
______________________________________________________________________________________
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V
V
IN
IN
= 6.02 x N + 1.76
MAX4108
MAX4108
100Ω
100Ω
100Ω
100Ω
0.1µF
0.1µF
REFN
REFN
REFP
REFP
1kΩ
1kΩ
1kΩ
1kΩ
R
50Ω
R
50Ω
ISO
ISO
0.1µF
0.1µF
signal to the RMS noise, which includes all spectral
components minus the fundamental, the first five har-
monics, and the DC offset.
SINAD is computed by taking the ratio of the RMS sig-
nal to all spectral components minus the fundamental
and the DC offset.
C
22pF
C
22pF
Signal-to-Noise Plus Distortion (SINAD)
IN
IN
22pF
22pF
R
50Ω
C
50Ω
R
C
ISO
IN
ISO
IN
INA+
COM
INA-
INB+
INB-
MAX1185
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