MAX1213N Datasheet, PDF (19/21 Pages) Maxim Integrated Products – 1.8V, Low-Power, 12-Bit, 170Msps ADC for Broadband Applications

1.8V, Low-Power, 12-Bit, 170Msps
ADC for Broadband Applications
Spurious-Free Dynamic Range (SFDR)
SFDR is the ratio of the RMS amplitude of the carrier
frequency (maximum signal component) to the RMS
value of the next-largest noise or harmonic distortion
component. SFDR is usually measured in dBc with
respect to the carrier frequency amplitude or in dBFS
with respect to the ADC’s full-scale range.
Intermodulation Distortion (IMD)
IMD is the ratio of the RMS sum of the intermodulation
products to the RMS sum of the two fundamental input
tones. This is expressed as:

IMD
=
20 ×
log^


V_IM12
+
V_IM22
+ ......+
V_IM32
+
V_IMn ²


V₁₂ + V₂₂


The fundamental input tone amplitudes (V₁ and V₂) are at
-7dBFS. The intermodulation products are the amplitudes
of the output spectrum at the following frequencies:
• Second-order intermodulation products: f_IN1 + f_IN2,
f_IN2 - f_IN1
• Third-order intermodulation products: 2 x f_IN1 - f_IN2,
2 x f_IN2 - f_IN1, 2 x f_IN1 + f_IN2, 2 x f_IN2 + f_IN1
• Fourth-order intermodulation products: 3 x f_IN1 - f_IN2,
3 x f_IN2 - f_IN1, 3 x f_IN1 + f_IN2, 3 x f_IN2 + f_IN1
• Fifth-order intermodulation products: 3 x f_IN1 - 2 x f_IN2,
3 x f_IN2 - 2 x f_IN1, 3 x f_IN1 + 2 x f_IN2, 3 x f_IN2 + 2 x f_IN1
Full-Power Bandwidth
A large -1dBFS 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. The -3dB point is defined as
the full-power input bandwidth frequency of the ADC.
Pin Configuration
TOP VIEW
68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52
AV_CC 1
AGND 2
EP
REFIO 3
REFADJ 4
AGND 5
AV_CC 6
AGND 7
INP 8
INN 9
AGND 10
AV_CC 11
AV_CC 12
AV_CC 13
AV_CC 14
AGND 15
AGND 16
CLKDIV 17
MAX1213N
51 D8P
50 D8N
49 D7P
48 D7N
47 D6P
46 D6N
45 OGND
44 OV_CC
43 DCLKP
42 DCLKN
41 OV_CC
40 D5P
39 D5N
38 D4P
37 D4N
36 D3P
35 D3N
18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
EP = EXPOSED PADDLE
QFN
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