TC850CPL Microchip Technology, TC850CPL Datasheet - Page 9

• Manufacturer Part Number: TC850CPL
• Description: IC ADC 15BIT FAST 40DIP
• Manufacturer: Microchip Technology

Specifications of TC850CPL

• Data Interface: Parallel
• Number Of Bits: 15
• Sampling Rate (per Second): 40
• Number Of Converters: 1
• Voltage Supply Source: Dual ±
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: 40-DIP (0.600", 15.24mm)
• Resolution (bits): 15bit
• Sampling Rate: 40SPS
• Input Channel Type: Differential
• Supply Voltage Range - Analog: ± 5V
• Supply Current: 2mA
• Digital Ic Case Style: DIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

4.0
The TC850 analog section consists of an input buffer
amplifier, integrator amplifier, comparator and analog
switches. A simplified block diagram is shown in
Figure 4-1.
FIGURE 4-1:
FIGURE 4-2:
© 2006 Microchip Technology Inc.
ANALOG
COMMON
*Auto Zeroed Amplifiers
Conversion
Internal
Clock
Phase
IN+
IN-
ANALOG SECTION
DESCRIPTION
C
INT
REF1
INT
+
DE1
(+)
. . . . . . .
Analog Section Simplified Schematic
Conversion Timing
Zero Integrator
DE1
DE
(-)
INT
REF1+
C
REF1
246
DE1
(+)
DE
REF1-
DE1
(-)
C
DE
REF1
C
REF2
-
-
Signal Integrate
DE2
(+)
DE1
(-)
256
1280 Clock Cyles
DE
C
REF2+
. .
REF2
DE1
(+)
DE2
(-)
4.1
Each conversion consists of three phases:
1.
2.
3.
Each conversion cycle requires 1280 internal clock
cycles (Figure 4-2).
C
REF2
Zero Integrator
Signal Integrate
Reference Integrate (or De-integrate)
-
+
-
. . . . . . . . . . . .
Buffer*
Conversion Timing
BUFF
Z1
Reference Integrate
R INT
INT IN
778
Integrator*
C INT
–
+
TC850
Comparator*
INT OUT
DS21479C-page 9
TC850
–
+
To Digital
Section