## DS1100LZ-35: 5-Tap Economy Timing Element The **DS1100LZ-35** is a high-precision, fixed-delay timing line manufactured by Maxim Integrated (now part of Analog Devices). It is part of the DS1100 series, designed to provide precise time delays for digital signals using a 3.3V power supply. --- ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Total Delay** | 35 ns | | **Number of Taps** | 5 Taps | | **Delay per Tap** | 7 ns (7, 14, 21, 28, 35 ns) | | **Supply Voltage (Vcc)** | 3.0V to 3.6V (Low Power) | | **Operating Temperature** | -40°C to +85°C (Industrial) | | **Package Type** | 8-pin SOIC or µSOP | | **Input Capacitance** | 10 pF max | --- ### 2. Functional Description The DS1100LZ-35 uses an internal multi-stage delay line. When a logic signal enters the **IN** pin, it passes through a series of internal buffers. The delayed signal is then output at five different points (Taps). * **Tap 1 (OUT1):** 7 ns delay * **Tap 2 (OUT2):** 14 ns delay * **Tap 3 (OUT3):** 21 ns delay * **Tap 4 (OUT4):** 28 ns delay * **Tap 5 (OUT5):** 35 ns delay (Full Delay) --- ### 3. Key Electronic Characteristics 1. **All-Silicon Design:** Unlike older LC-based delay lines, this is a 100% CMOS silicon device, making it more reliable and resistant to electromagnetic interference (EMI). 2. **Leading and Trailing Edge Precision:** The device is designed to maintain the delay accuracy for both the rising and falling edges of the input pulse. 3. **Low Power Consumption:** The "LZ" designation indicates it is a low-power version optimized for 3.3V systems, whereas the "DS1100" standard version usually operates at 5V. 4. **Vcc Tolerance:** It can handle a range of 3.0V to 3.6V, but slight variations in voltage can affect the timing precision (typically documented as a voltage coefficient in the datasheet). --- ### 4. Application Use Cases * **Clock De-skewing:** Synchronizing clock signals across different parts of a PCB where trace lengths differ. * **Memory Interfaces:** Adjusting the timing of Read/Write enables to ensure data setup and hold times are met. * **Pulse Width Modulation (PWM):** Fine-tuning the duration of pulses in control systems. * **Digital Logic Timing:** Creating specific delay windows for logic gates to prevent "race conditions." --- ### 5. Connection Diagram (8-Pin SOIC) ```text ---_--- IN | 1 8 | VCC OUT1 | 2 7 | OUT4 OUT2 | 3 6 | OUT3 GND | 4 5 | OUT5 ------- ```