cs5451 ETC-unknow, cs5451 Datasheet - Page 11

• Manufacturer Part Number: cs5451
• Description: Channel Delta Sigma Analog Digital Converter
• Manufacturer: ETC-unknow

3.
Clock Generator
XIN - Master Clock Input
Control Pins and Serial Data I/O
SE - Serial Port Enable
SDO - Serial Port Output
FSO - Frame Signal Output
SCLK - Serial Clock Output
RESET - Reset
GAIN - Input Gain Control
OWRS - Output Word Rate Select
DS458PP4
PIN DESCRIPTION
When SE is low, the output pins of the serial port are 3-stated.
Data will be at a rate determined by SCLK.
Framing signal output for data transfer from SDO pin.
A clock signal on this pin determines the output rate of data for SDO pin. Rate of SCLK is determined
by XIN frequency and state of OWRS input pin.
When reset is taken low, all internal registers are set to their default states.
Sets input gain for current channels. A logic high sets internal gain to 1, a logic low level sets the gain
to 20. If no connection is made to this pin, it will default to logic low level (through internal 200K
resistor to DGND).
When OWRS is set to logic low, the output word rate (OWR) at SDO pin is XIN/2048 (Hz). When set to
logic high, the OWR at SDO pin is XIN/1024 (Hz). If no connection is made to this pin, then OWRS will
default to logic low level (through internal 200K resistor to DGND).
Differential Current Input 3
Differential Current Input 3
Differential Voltage Input 3
Differential Voltage Input 3
Negative Analog Supply
Positive Analog Supply
Serial Clock Output
Current Input Gain
Serial Data Output
Serial Port Enable
Reference Output VREFOUT
Reference Input
Analog Ground
Frame Sync
VREFIN
AGND
VIN3+
SCLK
VIN3-
GAIN
IIN3+
SDO
IIN3-
FSO
VA+
VA-
SE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
23
28
27
26
25
24
22
21
20
19
18
17
16
15
VD+
DGND
CPD
XIN
RESET
OWRS
VIN1+
VIN1-
IIN1+
IIN1-
VIN2+
VIN2-
IIN2+
IIN2-
Digital Supply
Digital Ground
Charge Pump Drive
Master Clock
Reset
Output Word Rate Select
Differential Voltage Input 1
Differential Voltage Input 1
Differential Current Input 1
Differential Current Input 1
Differential Voltage Input 2
Differential Voltage Input 2
Differential Current Input 2
Differential Current Input 2
CS5451
11