TC514COI Microchip Technology, TC514COI Datasheet - Page 6

• Manufacturer Part Number: TC514COI
• Description: IC ANALOG FRONT END 17BIT 28SOIC
• Manufacturer: Microchip Technology
• Type: Precision Analog Front Endsr

Specifications of TC514COI

• Number Of Channels: 4
• Package / Case: 28-SOIC (7.5mm Width)
• Number Of Bits: 17
• Power (watts): 18mW
• Voltage - Supply, Analog: 5V
• Voltage - Supply, Digital: 4.5 V ~ 5.5 V
• Interface Type: Serial (3-Wire)
• Supply Voltage (min): 4.5 V
• Supply Current: 1.8 mA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TC500/A/510/514
3.0
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1:
DS21428C-page 6
TC500A
TC500,
10
12
13
14
15
16
11
—
—
—
—
—
—
—
—
—
—
—
—
—
—
1
2
3
4
5
6
7
8
9
PIN DESCRIPTIONS
Not Used
Pin No.
TC510
15
16
18
17
19
23
21
22
24
20
—
—
—
—
—
—
—
—
—
—
2
3
4
5
6
7
8
9
1
PIN FUNCTION TABLE
Not Used
Not Used
Not Used
TC514
22
21
23
27
25
26
28
24
18
13
17
12
16
11
15
10
20
19
2
3
4
5
6
7
8
9
1
Symbol
CMPTR
ACOM This pin is grounded in most applications. It is recommended that ACOM and the
C
V
DGND Input. Digital ground.
C
V
CAP+
V
CH1+
CH2+
CH3+
CH4+
CAP-
CH1-
CH2-
CH3-
CH4-
V
OUT
OSC
C
BUF
V
V
V
C
REF
REF
OUT
REF
REF
A0
A1
IN
INT
A
B
SS
IN
DD
AZ
+
-
+
+
-
-
-
Integrator output. Integrator capacitor connection.
Negative power supply input (TC500/TC500A only).
Auto-zero input. The auto-zero capacitor connection.
Buffer output. The Integrator capacitor connection.
input common pin (Ve
Input. Negative reference capacitor connection.
Input. Positive reference capacitor connection.
Input. External voltage reference (-) connection.
Input. External voltage reference (+) connection.
Negative analog input.
Positive analog input.
Input. Converter phase control MSB. (See input B.)
Input. Converter phase control LSB. The states of A, B place the
four required phases. A conversion is complete when all four phases have been
executed:
Phase control input pins: AB =
Zero crossing comparator output. CMPTR is high during the integration phase when
a positive input voltage is being integrated and is low when a negative input voltage
is being integrated. A high-to-low transition on CMPTR signals the processor that the
De-integrate phase is completed. CMPTR is undefined during the auto-zero phase. It
should be monitored to time the integrator zero phase.
Input. Power supply positive connection.
Input. Negative power supply converter capacitor (+) connection.
Input. Negative power supply converter capacitor (-) connection.
Output. Negative power supply converter output and reservoir capacitor connection.
This output can be used to power other devices in the circuit requiring a negative
bias voltage.
Oscillator control input. The negative power supply converter normally runs at a
frequency of 100 kHz. The converter oscillator frequency can be slowed down (to
reduce quiescent current) by connecting an external capacitor between this pin and
V
Positive analog input pin. MUX channel 1.
Negative analog input pin. MUX channel 1.
Positive analog input pin. MUX channel 2.
Negative analog input pin. MUX channel 2.
Positive analog input pin. MUX channel 3.
Negative analog input pin. MUX channel 3.
Positive analog input pin. MUX channel 4.
Negative analog input pin. MUX channel 4
Multiplexer input channel select input LSB (see A1).
Multiplexer input channel select input MSB.
Phase control input pins: A1, A0 =
DD
(see Section 2.0 “Typical Performance Curves”).
n
- or CH
n
-) be within the analog Common Mode Range (CMR).
00: Integrator zero
01: Auto-zero
10: Integrate
11: De-integrate
Function
00 = Channel 1
01 = Channel 2
10 = Channel 3
11 = Channel 4
 2004 Microchip Technology Inc.
TC5XX
in one of