ADC1207S080HW/C1:1 NXP Semiconductors, ADC1207S080HW/C1:1 Datasheet - Page 16

• Manufacturer Part Number: ADC1207S080HW/C1:1
• Description: IC ADC 12BIT 80MHZ SGL 48-HTQFP
• Manufacturer: NXP Semiconductors

Specifications of ADC1207S080HW/C1:1

• Number Of Bits: 12
• Sampling Rate (per Second): 80M
• Data Interface: Parallel
• Number Of Converters: 1
• Power Dissipation (max): 990mW
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 48-TQFP Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

NXP Semiconductors
12. Application information
ADC1207S080_2
Product data sheet
12.1 ADC1207S080 in 3G radio receivers
The ADC1207S080 has been proven in many 3G radio receivers with various operating
conditions regarding Input Frequency (IF), signal IF bandwidth and sampling frequency.
The ADC1207S080 is provided with a maximum analog input signal frequency of
400 MHz. It allows a significant cost-down of the RF front-end, from two mixers to only
one, even in multi-carriers architecture.
Table 9
mode.
Table 9.
[1]
For a dual carrier Wideband-Code-Division-Multiple-Access (W-CDMA) receiver, the most
important parameters are sensitivity and Adjacent Channel Selectivity (ACS). The
sensitivity is defined as the lowest detectable signal level. In W-CDMA, it can be far below
the noise floor. This difference, between the sensitivity and the noise floor, is defined by
the Sensitivity-to-Noise Ratio (SENR). Its value is negative due to the gain processing.
The Adjacent Channel Power Ratio (ACPR) is the difference between the full-scale 3 dB
peak and the noise floor. It represents the ratio of the adjacent-channel power and the
average power level of the channel. The ACS is defined by the sum of SENR and ACPR.
f
350
243.95
96
96
96
80
78.4
70
i
Fig 9. Adjacent channel sensitivity and ADC sensibility
(MHz)
IF bandwidth corresponds to the observed area on the ADC output spectrum.
describes some possible applications with the ADC1207S080 in high IF sampling
Examples of possible f
f
80
9.60
76.80
76.80
76.80
61.44
44.80
40.00
clk
Single 12 bits ADC, up to 80 MHz with direct/ultra high IF sampling
(MHz)
Rev. 02 — 7 August 2008
interfering channel
i
, f
clk
IF BW (MHz)
5.00
0.25
1.60
4.80
20.00
10.00
3.50
1.25
, IF BW combinations supported
wanted channel
NF
ACS
[1]
SNR (dB)
65
71
72
71
68
70
71
72
014aaa434
ACPR
SENR
ADC1207S080
noise floor
sensibility
thermal noise
SFDR (dBc)
71
80
76
77
76
85
76
79
© NXP B.V. 2008. All rights reserved.
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