Data Sheet

ADCA3280

SPECIFICATIONS

analog.com

Rev. 0 | 4 of 18

DISTORTION DATA

Downstream All Digital Channel Plan, 8× Orthogonal Frequency Division Multiplexing (OFDM)

Channels, 258 MHz to 1794 MHz

Using the application circuit shown in Figure 24. VDD = 21 V, IDD = 540 mA, TPADDLE = 35°C, and ZS = ZL = 75 Ω, unless otherwise noted.

Device performance is similar to 24 V, as shown in Figure 10.

Table 2. DOCSIS4.0 Distortion Data

Parameter

Symbol

Min

Typ

Max

Unit

Test Conditions/Comments

NOISE POWER RATIO1

NPR

48

dB

20 dB tilt, 6 dB offset at 1026 MHz, TCP = 74 dBmV, frequency =

273 MHz, see Figure 7

46

dB

20 dB tilt, 6 dB offset at 1026 MHz, TCP = 74 dBmV, frequency =

1041 MHz, see Figure 7

47.5

dB

20 dB tilt, 6 dB offset at 1026 MHz, TCP = 74 dBmV, frequency =

1773 MHz, see Figure 7

BIT ERROR RATE

BER

<1 × 10−10

Pre-forward error correction (Pre-FEC) errors, 20 dB tilt, 6 dB

offset at 1026 MHz, TCP = 74 dBmV, 4096 QAM

1 The noise power ratio gives an equivalent result to the standard modulation error rate (MER) testing but with improved dynamic range using an industry-accepted method.

Downstream All Digital Channel Plan, 190×, ITU-T J.83B, Single-Channel Quadrature Amplitude

Modulation (SCQAM) 6 MHz Channels, 54 MHz to 1218 MHz

Using the application circuit shown in Figure 24. VDD = 21 V, IDD = 540 mA, TPADDLE = 35°C, and ZS = ZL = 75 Ω, unless otherwise noted.

Device performance is similar at 24 V, as shown in Figure 17 and Figure 20.

Table 3. DOCSIS3.1 Distortion Data

Parameter

Symbol

Min

Typ

Max

Unit

Test Conditions/Comments

NOISE POWER RATIO1

NPR

48

dB

13 dB tilt, TCP = 74 dBmV, frequency = 111 MHz, see Figure 13

and Figure 14

56

dB

13 dB tilt, TCP = 74 dBmV, frequency = 1218 MHz, see Figure 13

and Figure 14

44

dB

18 dB tilt, TCP = 74 dBmV, frequency = 111 MHz, see Figure 11

and Figure 12

57

dB

18 dB tilt, TCP = 74 dBmV, frequency = 1218 MHz, see Figure 11

and Figure 12

BIT ERROR RATE

BER

<1 × 10−10

Post-Viterbi errors, 13 dB tilt, TCP = 75 dBmV

<1 × 10−10

Post-Viterbi errors, 18 dB tilt, TCP = 74 dBmV

1 The noise power ratio gives an equivalent result to the standard modulation error rate (MER) testing but with improved dynamic range using an industry-accepted method.