TDA8779H Datasheet, PDF (11/20 Pages) NXP Semiconductors – 10-bit converter interface ADC/DAC for quadrature transceiver

Philips Semiconductors
10-bit converter interface (ADC/DAC) for
quadrature transceiver
Product specification
TDA8779H
Table 1 Output coding and input voltage (typical value, with respect to AGND)
STEP
underflow
0
...
512
...
1 023
overflow
V_i − V₅₁₂
(V)
<−0.75
−0.75
...
0
...
0.75
>0.75
D9A
0
0
...
1
...
1
1
D8A
0
0
...
0
...
1
1
D7A
0
0
...
0
...
1
1
BINARY OUTPUT BITS
D6A D5A D4A D3A
0
0
0
0
0
0
0
0
...
...
...
...
0
0
0
0
...
...
...
...
1
1
1
1
1
1
1
1
D2A
0
0
...
0
...
1
1
D1A
0
0
...
0
...
1
1
D0A
0
0
...
0
...
0
1
Table 2 Input coding and output voltage (typical value, with respect to DGND)
STEP
0
...
512
...
1 023
D9D
0
...
1
...
1
D8D
0
...
0
...
1
D7D
0
...
0
...
1
BINARY INPUT BITS
D6D D5D D4D D3D
0
0
0
0
...
...
...
...
0
0
0
0
...
...
...
...
1
1
1
1
D2D
0
...
0
...
1
D1D
0
...
0
...
1
D0D
0
...
0
...
0
V_o − V₅₁₂
(V)
−0.5
...
0
...
0.5
Table 3 Mode selection
OE
1
0
D0A TO D9A
high impedance
active; binary
Table 4 Standby selection (ADC part)
STDBYA
1
0
D0 TO D9
−
ADC active
I_CCA + I_CCD (typ.)
5 mA
64 mA
Table 5 Standby selection (DAC part)
STDBYD
1
0
OUTI AND OUTQ
−
DAC active
I_CCA + I_CCD (typ.)
5 mA
38 mA
1999 Sep 16
11