- 制造厂商:TI
- 产品类别:数据转换器
- 技术类目:模数转换器 (ADC) - 精密模数转换器 (<=10MSPS)
- 功能描述:具有串行控制和 8 个模拟输入的汽车类低压 10 位模数转换器
- 点击这里打开及下载TLV1548-Q1的技术文档资料
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The TLV1548 is a CMOS 10-bit switched-capacitor successive-approximation (SAR) analog-to-digital (A/D) converter. The device has a chip select (CS), input-output clock (I/O CLK), data input (DATA IN) and serial data output (DATA OUT) that provides a direct 4-wire synchronous serial peripheral interface (SPI, QSPI) port of a host microprocessor. When interfacing with a TMS320 DSP, an additional frame sync signal (FS) indicates the start of a serial data frame. The device allows high-speed data transfers from the host. The INV CLK\ input provides further timing flexibility for the serial interface.
In addition to a high-speed converter and versatile control capability, the device has an on-chip 11-channel multiplexer that can select any one of eight analog inputs or any one of three internal self-test voltages. The sample-and-hold function is automatic except for the extended sampling cycle, where the sampling cycle is started by the falling edge of asynchronous CSTART. At the end of the A/D conversion, the end-of-conversion (EOC) output goes high to indicate that the conversion is complete. The TLV1548 is designed to operate with a wide range of supply voltages with very low power consumption. The power saving feature is further enhanced with a software-programmed power-down mode and conversion rate. The converter incorporated in the device features differential high-impedance reference inputs that facilitate ratiometric conversion, scaling, and isolation of analog circuitry from logic and supply noise. A switched-capacitor design allows low-error conversion over the full operating temperature range.
The TLV1548 has eight analog input channels. The TLV1548Q is characterized for operation over the full automotive temperature range of 40°C to 125°C.
- Qualified for Automotive Applications
- ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015; Exceeds 200 V Using Machine Model (C = 200 pF, R = 0)
- Conversion Time ≤ 10 μs
- 10-Bit-Resolution ADC
- Programmable Power-Down Mode . . . 1 μA
- Wide Range Single-Supply Operation of 2.7 V dc to 5.5 V dc
- Analog Input Range of 0 V to VCC
- Built-in Analog Multiplexer with 8 Analog Input Channels
- TMS320 DSP and Microprocessor SPI and QSPI Compatible Serial Interfaces
- End-of-Conversion (EOC) Flag
- Inherent Sample-and-Hold Function
- Built-In Self-Test Modes
- Programmable Power and Conversion Rate
- Asynchronous Start of Conversion for Extended Sampling
- Hardware I/O Clock Phase Adjust Input
SPI and QSPI are registered trademarks of Motorola, Inc.
- Resolution (Bits)
- 10
- Number of input channels
- 8
- Sample rate (Max) (kSPS)
- 85
- Interface type
- SPI
- Architecture
- SAR
- Input type
- Single-Ended
- Multi-channel configuration
- Multiplexed
- Rating
- Automotive
- Reference mode
- Ext
- Input range (Max) (V)
- 5.5
- Input range (Min) (V)
- 0
- Features
- —
- Operating temperature range (C)
- -40 to 125
- Power consumption (Typ) (mW)
- 1.05
- Analog voltage AVDD (Min) (V)
- 2.7
- Analog voltage AVDD (Max) (V)
- 5.5
- INL (Max) (+/-LSB)
- 1
- Digital supply (Min) (V)
- 2.7
- Digital supply (Max) (V)
- 5.5
TLV1548-Q1的完整型号有:TLV1548QDBRG4Q1、TLV1548QDBRQ1,以下是这些产品的关键参数及官网采购报价:
TLV1548QDBRG4Q1,工作温度:-40 to 125,封装:SSOP (DB)-20,包装数量MPQ:2000个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:NIPDAU,TI官网TLV1548QDBRG4Q1的批量USD价格:3.383(1000+)
TLV1548QDBRQ1,工作温度:-40 to 125,封装:SSOP (DB)-20,包装数量MPQ:2000个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:NIPDAU,TI官网TLV1548QDBRQ1的批量USD价格:3.383(1000+)
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