CS4373A Datasheet, PDF (4/34 Pages) Cirrus Logic – Low-power, High-performance Test DAC

CS4373A
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
Parameter
Bipolar Power Supplies
Positive Analog
Negative Analog
Positive Digital
Voltage Reference Input
{VREF+} - {VREF-}
VREF-
Thermal
Ambient Operating Temperature
Symbol Min
± 2% VA+
(Note 1) ± 2% VA-
± 3% VD
2.45
-2.45
3.20
(Note 2, 3) VREF
-
(Note 4) VREF-
-
Industrial (-IS, -ISZ) T_A
-40
Nom
2.50
-2.50
3.30
2.500
VA -
25
Max Unit
2.55
V
-2.55
V
3.40
V
-
V
-
V
85
°C
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+.
Modes of Operation
Selection MODE[2:0]
Mode Description
0
000
Sleep mode.
1
001
AC OUT and BUF outputs.
2
010
AC OUT only, BUF high-z.
3
0 11
AC BUF only, OUT high-z.
4
100
DC common mode output.
5
101
DC differential output.
6
110
AC common mode output.
7
111
Sleep mode.
Selection
0
1
2
3
4
5
6
7
Attenuation
ATT[2:0] Attenuation
000
1/1
001
1/2
010
1/4
0 11
1/8
100
1/16
101
1/32
11 0
1/64
111
reserved
dB
0 dB
-6.02 dB
-12.04 dB
-18.06 dB
-24.08 dB
-30.10 dB
-36.12 dB
reserved
Table 1. Selections for Operational Mode and Attenuation
4
DS699F2