TLV5590ED - 2-Bit FLEX Pager ADC | Texas Instruments
料号： TLV5590ED ✓ 量产中TLV5590ED 概述
An analog-to-digital converter is an interface IC that converts continuously varying analog signals into digital codes for processing, measurement, or control. A 2-bit ADC can represent four quantization levels, making it appropriate for compact control and detection systems rather than precision instrumentation. In the TLV5590 application, the converter operates inside a FLEX pager chipset alongside a compatible decoder and external peak or valley detection circuitry. Its position in the hierarchy is ADC, data-conversion IC, interface IC, semiconductor.
Key features include the 2-bit proprietary-method conversion, support for both peak and valley detectors, selectable dual-bandwidth audio filtering, and a low-power standby mode. Fast-track mode supports rapid acquisition, slow-track mode supports a different measurement update behavior, and hold preserves the converter state when needed. Standby reduces activity when the pager is not receiving or processing useful signal information. The single-supply operation down to 2.7 V also helps the device fit compact, battery-powered pager designs.
Technically, the TLV5590ED is part of a mixed analog and digital signal-processing chain. Its analog input is conditioned by filtering and detection circuitry before conversion. The resulting digital representation is intended for comparison and control within the chipset rather than high-resolution signal capture. The manufacturer datasheet describes the operating modes and their functional roles, but the supplied search data does not expose the complete timing table, transfer function, input impedance, or absolute maximum ratings; those details must therefore be confirmed in the original document before design release.
Typical applications include FLEX-format pagers, battery-operated two-way messaging terminals, compact receiver modules, and legacy FLEX chipset designs requiring the TLV5591 decoder. In such systems, the converter supports peak and valley level detection while the selectable filter bandwidth can be matched to the modulation and receiver characteristics. Standby operation is particularly useful where average battery consumption matters more than continuous conversion.
The primary design consideration is that this is a specialized 2-bit converter rather than a general-purpose high-resolution ADC. PCB implementation should preserve the package pin assignments and supply-decoupling recommendations in the manufacturer datasheet. Before substituting a different converter, engineers must verify package, pinout, input range, output coding, timing, filter response, and chipset protocol compatibility; a generic ADC with similar resolution may not be interchangeable.
This page consolidates the verified product identity, distributor availability, datasheet-linked operating features, and substitution constraints for the TLV5590ED. It also distinguishes documented characteristics from parameters that remain unavailable in the retrieved data, reducing the risk of treating a legacy pager ADC as a generic precision converter.
直接替换替代料： TLV5590ED ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
TLV5590IDR
✅ 直接替换📋 参考替代料（不在目录中）
TLV5590ED 最大额定值与电气特性
| ADC Resolution | 2 bit |
| Conversion Method | Proprietary method |
| Minimum Supply Voltage | 2.7 V |
| Supply Configuration | Single supply |
| Filter Architecture | 3-pole Butterworth low-pass |
| Selectable Filter Bandwidth | 1 kHz or 2 kHz |
| Bandwidth Tolerance | ±5% |
| Detection Functions | Peak and valley detectors |
| Operating Modes | Fast track, slow track, hold, and standby |
| Protocol Support | FLEX pager chipset |
| Compatible Decoder | TLV5591 FLEX decoder |
| Temperature Grade | Commercial |
| Package Type | 14-pin SOP gull-wing surface-mount package |
| Number of Terminals | 14 terminals |
| 安装类型 | Surface mount |
| Product Category | Analog-to-digital converter data-conversion IC |
TLV5590ED 14-pin sop gull-wing surface-mount package 引脚配置指南
TLV5590ED（14-pin sop gull-wing surface-mount package 封装）的引脚配置。 该模拟元件具有输入、输出和电源引脚。请参阅制造商数据手册以了解失调调零、补偿和使能引脚配置。适用于信号调理和放大器电路。
暂无详细引脚数据： TLV5590ED.
请参阅 数据手册 以查看完整引脚配置。
典型应用
TLV5590ED 适用于 6 应用s: FLEX Pager Receiver, Peak-Level Detection, Valley-Level Detection, Battery-Powered Two-Way Messaging, Compact Receiver Module, Legacy FLEX Test and Repair.
FLEX Pager Receiver
The TLV5590ED fits a legacy FLEX pager receiver because it combines 2-bit conversion with peak and valley detection, selectable 1 kHz or 2 kHz filtering, and chipset-oriented operating modes. According to the Texas Instruments TLV5590 datasheet, the three-pole Butterworth low-pass filter tolerates bandwidth variation by ±5%. Place the converter in the receiver signal-processing path and use its fast-track mode when rapid level updates are required. The principal design tradeoff is that its 2-bit resolution provides four quantization levels, making it suitable for detection and control rather than high-fidelity audio reproduction.
推荐
Peak-Level Detection
The TLV5590ED is appropriate for peak-level detection because the manufacturer datasheet explicitly identifies both peak and valley detectors as available functions. Its 2-bit output supports four decision levels, allowing a compact receiver controller to compare an analog level against selected thresholds. The selectable 1 kHz or 2 kHz filter bandwidth can be selected to match the receiver's timing requirements, subject to the specified ±5% bandwidth tolerance. Designers should verify threshold generation, comparator stability, and acquisition timing from the original datasheet before implementing the analog front end.
推荐
Valley-Level Detection
The TLV5590ED supports valley detection as an alternative to peak detection in a FLEX pager signal chain. This capability can help a chipset controller identify low points in a conditioned analog signal while the internal 2-bit converter supplies a compact digital representation. The available data confirms the detector and proprietary 2-bit conversion method, but it does not expose the full threshold table or transfer characteristic. Consequently, the receiver designer must retain analog headroom and validate every switching threshold using the manufacturer timing and electrical tables.
推荐
Battery-Powered Two-Way Messaging
The TLV5590ED is suited to battery-powered two-way messaging equipment because it operates from a single supply down to 2.7 V and provides a standby mode. The standby state can reduce switching activity when the receiver is not performing normal signal acquisition, while fast-track and slow-track modes provide different acquisition behaviors. Its 14-pin SOP package supports conventional surface-mount assembly, although the exposed complete pin table was not included in the retrieved data. Actual battery-life gains depend on the complete receiver duty cycle and system quiescent current, which are not available for this part.
推荐
Compact Receiver Module
The TLV5590ED can be used in a compact FLEX receiver module when board area and legacy chipset integration are more important than general-purpose ADC flexibility. The 14-terminal gull-wing SOP package is a conventional surface-mount format, and the device combines conversion, filtering, and detection functions that support integration into pager hardware. Its selectable 1 kHz or 2 kHz filter settings provide two timing choices for receiver optimization. Layout work should prioritize a short analog input path, stable filtering, and supply bypassing based on the original manufacturer recommendations.
推荐
Legacy FLEX Test and Repair
The TLV5590ED is useful when repairing or validating legacy FLEX pager electronics because it recreates the chipset's specialized 2-bit measurement function. A service fixture can use fast-track mode for quick acquisition, hold for stable observations, and standby when reducing activity between tests. The manufacturer datasheet confirms all four modes and the selectable 1 kHz or 2 kHz filter bandwidth, each with ±5% tolerance. Technicians should still compare the complete pinout, supply limits, and timing against the specific PCB revision rather than relying on the package outline alone.
推荐
推荐产品汇总
工程参考数据： TLV5590ED ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | TLV5590IDR |
|---|---|---|
| Package | 14-pin SOP gull-wing surface-mount package | 14-pin SOP |
| Brand | Texas Instruments | Texas Instruments |
关键差异点
- Purpose-built FLEX pager conversion （对比 TLV5590IDR)
- Integrated detection and filtering （对比 Generic 2-bit ADC)
- Four operating modes （对比 Single-mode conversion IC)
设计说明
Do not treat the TLV5590ED as a generic 2-bit ADC. Although a generic converter may have the same nominal resolution, the TLV5590 uses a proprietary conversion method and includes chipset-specific filtering and detection functions. Before replacement, verify the complete 14-pin assignment, supply ratings, conversion timing, filter bandwidth, output coding, and supported operating mode against the original Texas Instruments datasheet.
Keep the analog signal path compact and separate it from digital switching paths. The converter's selectable 1 kHz or 2 kHz three-pole Butterworth filter makes the analog trace, grounding, and bypass return paths important to predictable behavior. Use short traces, a quiet ground reference, and decoupling placement consistent with the manufacturer layout guidance. The retrieved data does not specify capacitance values, so no guessed values should be substituted.
The TLV5590ED operates from a single supply down to 2.7 V, but the retrieved data does not provide the maximum supply voltage or quiescent current. Confirm both limits in the manufacturer datasheet before connecting it to an existing pager rail. For battery-operated equipment, account for standby current as well as conversion-mode activity because standby is specifically identified as a power-conservation mode.
合规信息
The retrieved data identifies the product as a commercial-grade Texas Instruments analog-to-digital converter but does not provide RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations. Automotive qualification is not applicable to the documented commercial-grade TLV5590ED listing.
