English
Language : 

TDA8785 Datasheet, PDF (8/24 Pages) NXP Semiconductors – 8-bit high-speed analog-to-digital converter with gain and offset controls
◁
Philips Semiconductors
8-bit high-speed analog-to-digital converter
with gain and offset controls
Product specification
TDA8785
CHARACTERISTICS
VCCA1 = VCCA2 = VCCD = VCCO = 4.75 to 5.25 V; AGND, DGND and OGND short-circuited together;
VCCA to VCCD = VCCD to VCCO = VCCA to VCCO = −0.25 to +0.25 V; Tamb = 0 to 70 °C;
typical values measured at VCCA = VCCD = VCCO = 5 V and Tamb = 25 °C; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX. UNIT
Supplies
VCCA1
VCCA2
VCCD
VCCO
ICCA
ICCD
ICCO
analog supply voltage 1
analog supply voltage 2
digital supply voltage
TTL output supply voltage
analog supply current
digital supply current
TTL output supply current
Reference voltages (pins Vref and VRB)
Vo(ref)
Vline
Io(L)
VRB
output reference voltage
line regulation voltage
output load current
reference voltage output bottom
(decoupling)
Voffset(B)
∆VADC
offset voltage bottom
ADC reference voltage difference
VCCA = 4.75 to 5.25 V
code 0 − VRB
between
code 0 and 255
4.75
4.75
4.75
4.75
−
−
−
2.60
−
−0.5
−
−
−
5.0
5.25 V
5.0
5.25 V
5.0
5.25 V
5.0
5.25 V
80
−
mA
37
−
mA
9
−
mA
2.75
2.90 V
4
−
mV
−
+0.5 mA
VCCA − 2.5 −
V
250
−
mV
1
−
V
Analog inputs (pins Vi(p) and Vi(n)); see Table 1
Vi(diff)(p-p) differential input voltage Vi(p) − Vi(n) 0 dB gain
(peak-to-peak value)
20 dB gain
−
1 000
−
mV
−
100
−
mV
VI
DC input voltage
Ii
input current
Zi
input impedance
Ci
input capacitance
2.5
3.0
3.5 V
−
7
−
µA
−
20
−
kΩ
−
1
−
pF
Fast offset amplifier inputs (pins VFOFF(p) and VFOFF(n)); DC parameters
VFOFF(p) positive input voltage
0 dB gain
20 dB gain
−
500
−
mV
−
50
−
mV
VFOFF(n) negative input voltage
0 dB gain
20 dB gain
−
500
−
mV
−
50
−
mV
VI
DC input voltage
Ii
input current
Zi
input impedance
Ci
input capacitance
VCCA − 0.75 VCCA − 0.25 VCCA V
−
4
−
µA
−
20
−
kΩ
−
1
−
pF
1997 Dec 18
8
 ▷