cs5529-ap Cirrus Logic, Inc., cs5529-ap Datasheet - Page 23

• Manufacturer Part Number: cs5529-ap
• Description: 16-bit, Programmable ?? Adc With 6-bit Latch
• Manufacturer: Cirrus Logic, Inc.

Power Supply Arrangements
The CS5529 is designed to operate from single or
dual analog supplies and a single digital supply.
The following power supply connections are possi-
ble:
VA+ = +5 V; VA- = 0 V; VD+ = +3 V to +5 V
DS246F5
±2.5 V Differential Inputs (Gain Register = 1.0)
±1.25 V Differential Inputs (Gain Register = 2.0)
±625 mV Differential Inputs (Gain Register = 4.0)
Logic Outputs:
A0, A1 Switch from VA+ to VA-
D0-D3 Switch from VD+ to DGND
±5 V Differential Inputs (Gain Register = 1.0)
±2.5 V Differential Inputs (Gain Register = 2.0)
±1.25 V Differential Inputs (Gain Register = 4.0)
Logic Outputs:
A0, A1 Switch from VA+ to VA-
D0-D3 Switch from VD+ to DGND
Figure 10. CS5529 Configured with a +5.0 V Analog Supply.
Figure 11. CS5529 Configured with ±2.5 V Analog Supplies.
Analog
+2.5 V
Supply
Analog
Supply
-2.5 V
Analog
+5.0 V
Supply
Common Mode = 0 to VA+
0.1 µ F
0.1 µ F
+
-
20
19
18
17
16
20
19
3
4
18
17
16
7
6
5
3
4
7
6
5
0.1 µ F
D3
D2
D1
D0
A1
A0
VREF+
VREF-
AIN+
AIN-
D3
D2
D1
D0
A1
A0
VREF+
VREF-
AIN+
AIN-
VA+ = +2.5 V; VA- = -2.5 V; VD+ = +3 V to +5 V
VA+ = +3.0 V; VA- = -3.0 V; VD+ = +3 V
Figure 10 illustrates the CS5529 connected with a
single +5 V supply to measure differential inputs
relative to a common mode of 2.5 V. Figure 11 il-
lustrates the CS5529 connected with ±2.5 V bipolar
VA+
VA-
VA+
VA-
2
CS5529
1
2
CS5529
1
10 Ω
VD+
DGND
VD+
DGND
XOUT
SCLK
XOUT
SDO
SCLK
13
SDO
XIN
SDI
12
13
CS
XIN
SDI
12
CS
10
11
8
9
15
14
10
11
8
9
15
14
32.768 kHz ~ 100 kHz
32.768 kHz ~ 100 kHz
0.1 µ F
0.1 µ F
Optional Clock
+3 V ~ +5 V
Optional Clock
Interface
Interface
Serial
Data
Source
Serial
Data
Source
Supply
Digital
CS5529
23