Manual

CS4373A
4 DS699F2
1. CHARACTERISTICS AND SPECIFICATIONS
• Min / Max characteristics and specifications are guaranteed over the Specified Operating Conditions.
• Typical performance characteristics and specifications are measured at nominal supply voltages and T
A
= 25°C.
• GND = 0 V. Single-ended voltages with respect to GND, differential voltages with respect to opposite half.
• Device is connected as shown in Figure 6 on page 17, unless otherwise noted.
SPECIFIED OPERATING CONDITIONS
Notes: 1. VA- must always be the most-negative input voltage to avoid potential SCR latch-up conditions.
2. By design, a 2.500 V voltage reference input results in the best signal-to-noise performance.
3. Full-scale accuracy is directly proportional to the voltage reference absolute accuracy.
4. VREF inputs must satisfy: VA- <
VREF- < VREF+ < VA+.
Parameter Symbol Min Nom Max Unit
Bipolar Power Supplies
Positive Analog
± 2% VA+ 2.45 2.50 2.55 V
Negative Analog (Note 1)
± 2% VA- -2.45 -2.50 -2.55 V
Positive Digital
± 3% VD 3.20 3.30 3.40 V
Voltage Reference Input
{VREF+} - {VREF-} (Note 2, 3) VREF - 2.500 - V
VREF- (Note 4)VREF- - VA- - V
Thermal
Ambient Operating Temperature Industrial (-IS, -ISZ) T
A
-40 25 85 °C
Modes of Operation
Selection MODE[2:0] Mode Description
0 0 0 0 Sleep mode.
1 0 0 1 AC OUT and BUF outputs.
2 0 1 0 AC OUT only, BUF high-z.
3 0 1 1 AC BUF only, OUT high-z.
4 1 0 0 DC common mode output.
5 1 0 1 DC differential output.
6 1 1 0 AC common mode output.
7 1 1 1 Sleep mode.
Attenuation
Selection ATT[2:0] Attenuation dB
0 000 1/1 0dB
1 0 0 1 1/2 -6.02 dB
2 0 1 0 1/4 -12.04 dB
3 0 1 1 1/8 -18.06 dB
4 1 0 0 1/16 -24.08 dB
5 1 0 1 1/32 -30.10 dB
6 1 1 0 1/64 -36.12 dB
7 1 1 1 reserved reserved
Table 1. Selections for Operational Mode and Attenuation