TDA8779 Datasheet, PDF (7/20 Pages) NXP Semiconductors – 10-bit converter interface ADC/DAC for quadrature transceiver

Philips Semiconductors
10-bit converter interface (ADC/DAC) for
quadrature transceiver
Objective specification
TDA8779
SYMBOL
PARAMETER
I_CCO
I_CCA1(stb)
I_CCA2(stb)
output stage supply current
analog standby current for ADC part
analog standby current for DAC part
ADC PART
CLOCK INPUT
V_IL
LOW level input voltage
V_IH
HIGH level input voltage
I_IL
LOW level input current
I_IH
HIGH level input current
DIGITAL INPUTS: PINS OE AND STDBYA
V_IL
LOW level input voltage
V_IH
HIGH level input voltage
I_IL
LOW level input current
I_IH
HIGH level input current
ANALOG INPUTS
I_IL
I_IH
V_i(p-p)
LOW level input current
HIGH level input current
analog input voltage
(peak-to-peak value)
V_i(p-p)over maximum analog input over voltage
(peak-to-peak value)
Z_I
input impedance
C_I
input capacitance
DIGITAL OUTPUTS: D0A TO D9A
V_OL
LOW level output voltage
V_OH
HIGH level output voltage
I_oZ
output current in 3-state mode
SWITCHING CHARACTERISTICS (see Fig.3)
f_CLKmax
t_CH
t_CL
t_r
t_f
maximum clock frequency
clock pulse width HIGH
clock pulse width LOW
clock rise time
clock fall time
CONDITIONS
ramp input; f_CLK = 20 MHz
MIN.
−
−
−
TYP. MAX. UNIT
2
−
mA
5
−
mA
5
−
mA
0
−
0.6 V
2.2
−
V_CCD1 V
−10
−
+10 µA
−10
−
+10 µA
0
−
0.6 V
2.2
−
V_CCD1 V
−1
0
+1 µA
−
−
1
µA
for code 0
for code 1023
full-scale
overvoltage
−
tbf −
µA
−
tbf −
µA
tbf
1.5 tbf V
−
−
4.5 V
−
10 −
kΩ
−
3
−
pF
I_o = 1 mA
I_o = −1 mA
0.5 V < V_o < V_CCO − 0.5 V
0
−
V_CCO − 0.5 −
−20
−
0.5 V
V_CCO V
+20 µA
20
−
−
MHz
20
−
−
ns
20
−
−
ns
−
4
−
ns
−
4
−
ns
1996 Sep 18
7