TDA8771A Datasheet, PDF (7/20 Pages) NXP Semiconductors – Triple 8-bit video Digital-to-Analog Converter DAC

Philips Semiconductors
Triple 8-bit video Digital-to-Analog
Converter (DAC)
Product specification
TDA8771A
CHARACTERISTICS
V_DDA = V_DDD = 4.5 to 5.5 V; V_SSA and V_SSD shorted together; V_DDA − V_DDD = −0.5 to +0.5 V; T_amb = 0 to 70 °C;
typical values measured at V_DDA = V_DDD = 5 V and T_amb = 25 °C; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Supply
V_DDA
V_DDD
I_DDA
I_DDD
Inputs
analog supply voltage
digital supply voltage
analog supply current
digital supply current
4.5
5.0
5.5
V
4.5
5.0
5.5
V
R_L = 1 kΩ; note 1
10
33
45
mA
f_clk = 35 MHz
−
7
20
mA
CLOCK INPUT (PIN 31)
V_IL
LOW level input voltage
0
V_IH
HIGH level input voltage
2.0
R, G, B DIGITAL INPUTS (PINS 12 TO 8, 5 TO 3, 20 TO 13, 30, 29 AND 26 TO 21)
V_IL
LOW level input voltage
0
V_IH
HIGH level input voltage
2.0
I_REF REFERENCE CURRENT INPUT FOR OUTPUT BUFFERS (PIN 1)
I_I
input current
−
Timing; see Fig.3
f_clk(max)
maximum clock frequency
35
t_CPH
clock pulse width HIGH
8
t_CPL
clock pulse width LOW
8
t_r
clock rise time
−
t_f
clock fall time
−
t_SU;DAT
input data set-up time
4
t_HD;DAT
input data hold time
4
Voltage reference (pin 33, referenced to V_SSA)
V_REF
output reference voltage
1.180
Outputs
−
−
−
−
0.6
−
−
−
−
−
−
−
1.242
1.2
V_DDD
1.2
V_DDD
0.7
−
−
−
5
6
−
−
1.305
V
V
V
V
mA
MHz
ns
ns
ns
ns
ns
ns
V
OUTB, OUTR, OUTG ANALOG OUTPUTS (PINS 36, 44 AND 40, REFERENCED TO V_SSA) FOR 1 kΩ LOAD; see Table 1
FSR
full-scale output voltage range
2.80
2.95
3.10
V
V_os
offset of analog voltage output
−
0.25
−
V
V_Omax
maximum output voltage
data inputs = logic 1; 2.95
3.20
3.45
V
note 2
V_Omin
minimum output voltage
data inputs = logic 0; 0.05
0.25
0.45
V
note 2
THD
Z_L
total harmonic distortion
output load impedance
f_i = 4.43 MHz;
f_clk = 35 MHz
−
−44
−
dB
0.9
1.0
1.1
kΩ
1996 Jan 25
7