The TLC7135 is a precision 4 1/2-digit analog-to-digital converter (ADC) IC designed for high-accuracy measurement applications. It provides low-noise, high-stability performance ideal for digital multimeters and other precision measurement systems. The IC is housed in a SOP-28 SMD package, making it suitable for surface-mount applications where space is a constraint.
Pin Configuration:
- IN HI: Positive analog input
- IN LO: Negative analog input
- ANALOG COMMON: Reference for input signal
- BUFF: Buffer output
- VREF LO: Reference voltage low
- VREF HI: Reference voltage high
- VCC: Positive supply voltage
- VSS: Negative supply voltage
- DIGITAL COMMON: Ground for digital section
- OSC1: Oscillator pin 1
- OSC2: Oscillator pin 2
- STROBE: Strobe input
- BIPOLAR/ZERO: Mode control
- POLARITY: Polarity output
- OVER RANGE: Over-range indication
- DIGIT SELECT 1-4: Digit select outputs
- DIGIT DRIVE 1-4: Digit drive outputs
- BLANK: Blank display
- A OUT: Segment A output
- B OUT: Segment B output
- C OUT: Segment C output
- D OUT: Segment D output
- E OUT: Segment E output
- F OUT: Segment F output
- G OUT: Segment G output
- DP OUT: Decimal point output
- TEST: Test pin
- VDD: Digital supply voltage
Features:
- High precision with low drift
- Auto-zero and auto-polarity
- Built-in reference voltage
- Minimal external components required
- Directly drives LCDs and LEDs
- Excellent linearity and stability
Applications:
- Digital multimeters
- Data acquisition systems
- Portable measurement instruments
- Industrial process control
- Laboratory instrumentation
Package Includes:
- 1 x TLC7135 4 1/2-Digit Precision Analog-to-Digital Converter IC (SOP-28 SMD Package)
Note: Product images are for illustrative purposes only and may differ from the actual product.
Specifications
| IC Type | Analog-to-Digital Converter |
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| Package Type | SOP-28 SMD |
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| Package Size | 28 Pins |
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| Resolution | 4 1/2 digits (19,999 counts) |
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| Conversion Type | Dual-slope |
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| Input Voltage Range | ±2 V, ±20 V |
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| Reference Voltage | 100 mV to 100 V |
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| Power Supply Voltage | ±5 V to ±15 V |
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| Maximum Conversion Rate | 30 conversions per second |
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| Operating Temperature Range | 0°C to +70°C |
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