DSP56156 Motorola Inc, DSP56156 Datasheet - Page 17

• Manufacturer Part Number: DSP56156
• Description: 16-bit Digital Signal Processor
• Manufacturer: Motorola Inc

A/D and D/A Performance
(V
The A/D and D/A performance of the codec section are given in Table 8 with an
example presented in Figure 4.
NOTES: 1. 0 dB gain on the A/D and D/A; Codec clock at 1.538 MHz with 128 decimation/interpolation ratio and
MOTOROLA
CCA
Characteristic
Analog to Digital Section Signal to Noise
plus Distortion Ratio (S/N+T)
Digital to Analog Section Signal to Noise
plus Distortion Ratio (S/N+T)
80
70
60
50
40
30
20
10
= 5.0 V dc ± 10%, T
0
2. 0 dBm0 corresponds to -3.14 dB below the input saturation level
Figure 4 Example: S/N and S/N+T Performance for the A/D Section
tested at 1502 Hz
S/N+T
S/N
Freescale Semiconductor, Inc.
For More Information On This Product,
J
Table 8 A/D and D/A Performance of Codec
= -40 to +125 C)
Go to: www.freescale.com
DSP56156 Data Sheet
(See Note 2)
-50 dBm0
0 dBm0
-50 dB
Level
0 dB
Signal in dB
S in dB
13 MHz
Min
55
15
55
15
÷ 13
÷ 6.5
÷13
2 MHz
1 MHz
(See Note 1)
CODEC
Electrical Characteristics and Timing
Typ
Codec
65
20
65
20
÷(12+1)*4
÷(12+1)x4
PLL
PLL
COCR=$E400
A/D and D/A Performance
Max
—
—
—
—
52 MHz
Unit
dB
dB
dB
dB
17