tda8792m NXP Semiconductors, tda8792m Datasheet - Page 13

• Manufacturer Part Number: tda8792m
• Description: 3.3 V, 25 Mhz 8-bit Analog-to-digital Converter Adc
• Manufacturer: NXP Semiconductors

Philips Semiconductors
APPLICATION INFORMATION
1996 Feb 21
3.3 V, 25 MHz 8-bit
analog-to-digital converter (ADC)
The analog and digital supplies should be separated and decoupled.
The external voltage generator must be built such that a good supply voltage ripple rejection is achieved with respect to the LSB value. The reference
ladder voltages can also be derived from a well regulated V
For applications where the input signal must remain well centred around middle scale, V
(pin 5) through a resistor. The values must be defined in accordance with the input signal frequency in order to avoid direct coupling into the ADC ladder
(e.g. R = 5 k and C = 100 nF).
(1) V
(2) Pin 11 should be connected to V
RB
handbook, full pagewidth
, V
RM
and V
RT
are decoupled to V
3.3 V
100 nF
22 k
100 nF
SSA
3.3 V
100 nF
in order to prevent noise influence.
SSA
3.3 V
100 nF
100 nF
.
Fig.12 Application diagram.
DDA
V SSA2
V SSD2
V SSA1
STDBY
V
V DDA
V RM
I bias
V RB
supply through a resistor bridge and a decoupled capacitor.
DDD
V RT
n.c.
V
I
(1)
(1)
(1)
(2)
10
12
11
4
1
2
3
5
6
7
8
9
13
TDA8792
RM
MLD128 - 1
must be decoupled and connected to analog input signal
19
18
17
16
15
14
13
24
23
22
21
20
OE
CLK
D7
D6
D5
D4
D3
D2
D1
D0
V
V
SSO
DDO
100 nF
3.3 V
Product specification
TDA8792