TDA8798HL Philips Semiconductors, TDA8798HL Datasheet - Page 2

• Manufacturer Part Number: TDA8798HL
• Description: Dual 8-bit/ 100 Msps A/D converter with DPGA
• Manufacturer: Philips Semiconductors

Philips Semiconductors
FEATURES
QUICK REFERENCE DATA
2001 Feb 14
V
V
V
I
I
I
NL
NL
V
B
B
f
P
DDA
DDD
DDO
(sample)(max)
Dual 8-bit Analog-to-Digital Converter (ADC)
Sampling rate up to 100 million samples per
second (Msps)
Dual 34 dBV 6-bit Digitally Programmable Gain
Amplifier (DPGA) with optional power-off
Optional external equalization filter with capacitive
coupling between DPGA and ADC
Serial Interface (SI) for DPGA gain control, using either
parallel load mode or count-up/count-down mode
3.3 V TTL/CMOSupersedes data of 2001 Jan 12
S compatible I/O
Single-ended TTL/CMOS clock interface
AC or DC coupling for DPGA inputs.
SYMBOL
DDA
DDD
DDO
n(o)(rms)
( 3dB)(ADC)
( 3dB)(DPGA)
tot
Dual 8-bit, 100 Msps A/D converter with optional DPGA
dc(i)
dc(dif)
analog supply voltage
digital supply voltage
output stage supply voltage
analog supply current
digital supply current
output stage supply current
DC integral non-linearity
DC differential non-linearity
output referred noise (RMS value)
ADC 3 dB analog bandwidth
DPGA 3 dB analog bandwidth
maximum sampling rate
total power dissipation
PARAMETER
with DPGAEN LOW
with DPGAEN HIGH
from IC analog input to digital
output; ramp input; f
without DPGA
with DPGA at G
from IC analog input to digital
output; ramp input; f
without DPGA
with DPGA at G
DPGA at G
noise bandwidth = 15 MHz;
at gain control register =
00H
20H
3FH
at V
at V
with DPGAEN LOW
with DPGAEN HIGH
i(dif)(FS)
i(dif)(max)
2
APPLICATIONS
GENERAL DESCRIPTION
The TDA8798 is a dual 8-bit ADC with DPGA. The
100 Msps maximum sampling rate and 33 dBV DPGA
gain range optimizes the ADC for high dynamic range
applications.
CONDITIONS
(max)
High-dynamic range acquisition front-ends
Digital data storage read channels.
; Z
(min)
(min)
i
= 50 ;
clk
clk
= 4 MHz
= 4 MHz
3.15
3.0
2.7
30
100
MIN.
3.3
3.3
3.3
110
68
30
1.9
0.23
0.56
1.95
150
38
468
330
Product specification
TYP.
0.6
0.7
0.3
0.3
TDA8798
3.45
3.6
3.6
136
82
45
6.0
655
470
MAX.
1.7
1.8
0.8
0.8
V
V
V
mA
mA
mA
mA
LSB
LSB
LSB
LSB
mV
mV
mV
MHz
MHz
Msps
mW
mW
UNIT
rms
rms
rms