TDA8708A Datasheet, PDF (6/24 Pages) NXP Semiconductors – Video analog input interface

Philips Semiconductors
Video analog input interface
Product specification
TDA8708A
CHARACTERISTICS
V_CCA = V₂₂ to V₂₃ = 4.5 to 5.5 V; V_CCD = V₆ to V₈ = 4.5 to 5.5 V; V_CCO = V₇ to V₈ = 4.2 to 5.5 V; AGND and DGND
shorted together; V_CCA to V_CCD = −0.5 to +0.5 V; V_CCO to V_CCD = −0.5 to +0.5 V; V_CCA to V_CCO = −0.5 to +0.5 V;
T_amb = 0 to +70 °C; typical readings taken at V_CCA = V_CCD = V_CCO = 5 V and T_amb = 25 °C; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX. UNIT
Supplies
V_CCA
V_CCD
V_CCO
I_CCA
I_CCD
I_CCO
analog supply voltage
digital supply voltage
TTL output supply voltage
analog supply current
digital supply current
TTL output supply current
Video amplifier inputs
TTL load (see Fig.8)
4.5
5.0
4.5
5.0
4.2
5.0
−
37
−
24
−
12
5.5
V
5.5
V
5.5
V
45
mA
30
mA
16
mA
VIN(0 TO 2) INPUTS
V_I(p-p)
input voltage (peak-to-peak value) AGC load with external 0.6
−
capacitor; note 1
|Z_i|
input impedance
C_I
input capacitance
f_i = 6 MHz
f_i = 6 MHz
10
20
−
1
I0 AND I1 TTL INPUTS (SEE TABLE 1)
1.5
V
−
kΩ
−
pF
V_IL
LOW level input voltage
V_IH
HIGH level input voltage
I_IL
LOW level input current
V_I = 0.4 V
I_IH
HIGH level input current
V_I = 2.7 V
GATE A AND GATE B TTL INPUTS (SEE FIGS 4 AND 5)
0
−
2.0
−
−400 −
−
−
0.8
V
V_CCD V
−
µA
20
µA
V_IL
LOW level input voltage
V_IH
HIGH level input voltage
I_IL
LOW level input current
I_IH
HIGH level input current
t_W
pulse width
RPEAK INPUT (PIN 28)
V_I = 0.4 V
V_I = 2.7 V
see Fig.5
0
−
2.0
−
−400 −
−
−
2
−
0.8
V
V_CCD V
−
µA
20
µA
−
µs
I_28(min)
minimum peak level current
AGC INPUT (PIN 25)
R₂₈ = 0 Ω
−
80
150 µA
V_25(min)
V_25(max)
AGC voltage for minimum gain
AGC voltage for maximum gain
AGC output current
−
2.8
−
V
−
4.0
−
V
see Table 2
CLAMP INPUT (PIN 24)
V₂₄
clamp voltage for code 128 output
I₂₄
clamp output current
−
3.5
−
V
see Table 3
June 1994
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