Overview
The ADS7886SBDCKR is a 12-bit, 1-MSPS analog-to-digital converter (ADC) produced by Texas Instruments. This device features a capacitor-based Successive Approximation Register (SAR) A/D converter with inherent sample and hold circuitry. It operates over a wide supply range from 2.35 V to 5.25 V, making it suitable for various applications, including battery-powered systems. The low power consumption, typically 3.9 mW at 3 V and 7.5 mW at 5 V, and a power-down feature enhance its efficiency in power-sensitive applications.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Resolution | 12 | - | - | Bits |
| Sample Rate | - | 1 | - | MSPS |
| Supply Voltage | 2.35 | - | 5.25 | V |
| Power Dissipation at 1 MSPS | - | 3.9 mW (at 3 V) | 7.5 mW (at 5 V) | mW |
| Integral Nonlinearity (INL) | -1.25 | ±0.65 | 1.25 | LSB |
| Differential Nonlinearity (DNL) | -1 | +0.4 / -0.65 | 1 | LSB |
| Offset Error | -2.5 | ±0.5 | 2.5 | LSB (VDD = 2.35 V to 3.6 V) |
| Gain Error | -1.75 | ±0.5 | 1.75 | LSB |
| Conversion Time | - | 760-800 ns | - | ns |
| Acquisition Time | - | 325 ns | - | ns |
| Maximum Throughput Rate | - | 1 MHz | - | MSPS |
| Aperture Delay | - | 5 ns | - | ns |
| Input Capacitance | - | 21 pF | - | pF |
| Input Leakage Current | - | 40 nA (at TA = 125°C) | - | nA |
Key Features
- 12-bit resolution with zero latency
- 1-MHz sample rate
- 20-MHz serial interface
- Wide supply range: 2.35 V to 5.25 V
- Low power consumption: 3.9 mW at 3 V and 7.5 mW at 5 V
- Power-down feature for power saving
- Unipolar input range: 0 V to VDD
- High input bandwidth: 15 MHz at 3 dB
- Available in 6-pin SOT-23 and SC70 packages
- Operating temperature range: –40°C to 125°C
Applications
- Base band converters in radio communication
- Motor current and bus voltage sensors in digital drives
- Optical networking (DWDM, MEMS-based switching)
- Optical sensors
- Battery-powered systems
- Medical instrumentations
- High-speed data acquisition systems
- High-speed closed-loop systems
Q & A
- What is the resolution of the ADS7886SBDCKR? The ADS7886SBDCKR has a 12-bit resolution.
- What is the sample rate of the ADS7886SBDCKR? The sample rate is 1 MSPS.
- What is the supply voltage range for the ADS7886SBDCKR? The supply voltage range is from 2.35 V to 5.25 V.
- How much power does the ADS7886SBDCKR typically consume at 1 MSPS? It typically consumes 3.9 mW at 3 V and 7.5 mW at 5 V.
- What is the input range for the ADS7886SBDCKR? The input range is from 0 V to VDD.
- What is the maximum throughput rate of the ADS7886SBDCKR? The maximum throughput rate is 1 MHz.
- What are the package options for the ADS7886SBDCKR? It is available in 6-pin SOT-23 and SC70 packages.
- What is the operating temperature range for the ADS7886SBDCKR? The operating temperature range is from –40°C to 125°C.
- Does the ADS7886SBDCKR have a power-down feature? Yes, it has a power-down feature for power saving.
- What is the typical input capacitance of the ADS7886SBDCKR? The typical input capacitance is 21 pF.
