Datasheet


  
SLIS110A − APRIL 2003 − REVISED MAY 2005
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
dc electrical characteristics, V
DD
= 5 V ±5%, input frequency before prescaler = 4 MHz to 20 MHz
(±0.5%), T
A
= −40°C to 125°C (unless otherwise specified) (continued)
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
Multiplexer
C
ATTEN
Cross-coupling attenuation (assured by
design)
f
in
max
(ch1)
= 20 kHz, measured on
channel 2
40 dB
Anti-Aliasing Filter
f
c
‡
Cut-off frequency at –3 dB 35 45 55 kHz
BW
Response 1 kHz to 20 kHz referenced to
1 kHz
70-mV RMS, input: CH1FB or CH2FB,
output: OUT
−1 −0.5 1 dB
ATTEN Attenuation at 100 kHz referenced to 1 kHz
70-mV RMS, input: CH1FB or CH2FB,
output: OUT
−10 −15 dB
Analog-to-Digital Converter
f
s
Sampling frequency For all frequencies stated 198 200 202 kHz
AR Analog resolution 10 Bit
ADNL Differential linearity error (DNL) 1 Bit
AINL Linearity error (INL) 1 Bit
Digital-to-Analog Converter
f
s(DA)
Sampling frequency 198 200 202 kHz
DR Resolution at 200 kHz 10 Bit
DDNL Differential linearity error (DNL) (Vreset < DACout < 0.98 V
DD
) −1 1 LSB
DINL Linearity error (INL) (Vreset < DACout < 0.98 V
DD
) −2.5 2.5 LSB
DRNIL
Repeatability (for characterization purposes
only)
−1 1 LSB
Output Buffer
V
OH
High-level output voltage V
DD
= 5 V, I
Source
= 2 mA
V
DD
–
0.2
V
DD
–
0.15
V
V
OL
Low-level output voltage V
DD
= 5 V, I
Sink
= 2 mA 120 175 mV
Av Open-loop gain I
O
= ±2 mA 60 100 dB
G Output gain I
O
= ±2 mA 1
V
ripple
Ripple voltage
C
L
= 0 to 22 nF, max slew rate,
12 mV/µs from Vreset to 4 V
10 mV
t
s
Settling time
C
L
= 0 to 22 nF, max slew rate,
12 mV/µs from Vreset to 4 V,
output: ±0.5 LSB
20 µs
‡
f
c
is programmable (see Table 1).