Analog Devices Inc./Maxim Integrated DS1023S-200+

Overview

DS1023S-200+ from Maxim Integrated (formerly Dallas Semiconductor) is an 8-bit programmable silicon delay line configured for 2 ns step resolution, 510 ns maximum absolute delay, and dual-mode output (delayed/non-inverted or PWM/inverted) via MS pin control. It operates from a single 5V supply in SOIC-16 package and supports parallel or serial programming. Used in clock phase alignment, pulse width modulation, and free-running oscillator circuits.

For engineers reviewing the DS1023S-200+ datasheet, DS1023S-200+ pinout, DS1023S-200+ application, or DS1023S-200+ equivalent, key selection criteria include guaranteed monotonicity, on-chip reference delay for 0–360° phase coverage, 20 ns minimum input pulse width support, and daisy-chain serial programming capability.

Technical Context

The DS1023S-200+ implements a revised internal delay line architecture enabling full-period clock delay (≥510 ns) and precise phase control via REF/PWM pin pairing. Its on-chip reference delay (18–22 ns) cancels step-zero variation, allowing true zero-relative delay calibration against the REF output.

It supports three functional modes: normal delay line (MS = 0), pulse width modulator (MS = 1, PWM output at REF/PWM), and free-running oscillator (external OUT→IN feedback). Programming uses shared P0–P2 pins for serial data/clock or parallel inputs, with P/S pin selecting mode and LE enabling latch control.

Key Specifications

Pinout & Package

DS1023S-200+ is housed in a 16-pin 300-mil SOIC package with standard JEDEC outline and 1.27 mm pitch.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar programmable delay line applications.

Compared with DS1023-200+, the DS1023S-200+ offers identical timing performance in SOIC packaging for automated assembly, while the MAX9622EUA+ sacrifices reference delay, PWM, and parallel programming to achieve smaller size-making it a functional subset rather than drop-in replacement.

Availability

DS1023S-200+ is available at Aetrix Electronics and suitable for clock synchronization, PWM generation, oscillator design, and timing calibration applications requiring stable component supply and long-term manufacturability.

Supply support for DS1023S-200+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated, now part of Analog Devices, designs precision analog, mixed-signal, and timing ICs for industrial, communications, and computing markets.

The DS1023S-200+ belongs to Maxim's programmable timing element family, engineered for applications demanding digitally adjustable nanosecond-scale delays with on-chip reference stability and multi-mode output flexibility.

FAQ

What is the maximum input frequency supported by the DS1023S-200+?

The DS1023S-200+ supports a maximum input frequency of 25 MHz, corresponding to a 40 ns minimum input period. This limit applies in normal delay and reference modes. In PWM mode, the effective input period must accommodate both step-zero delay and programmed delay, but the device remains functional up to 25 MHz provided the 20 ns minimum input pulse width is met.

Does the DS1023S-200+ require external components to operate as a free-running oscillator?

No, the DS1023S-200+ can operate as a free-running oscillator with no external components beyond a pull-up resistor on the OUT pin if interfacing with TTL loads. Simply connect the OUT pin back to the IN pin, configure MS = 1, and program a non-zero delay value-the oscillation period equals twice the programmed delay (e.g., 100 ns programmed → 200 ns period → 5 MHz output).

How does the on-chip reference delay improve timing accuracy in the DS1023S-200+?

The on-chip reference delay (18–22 ns) in the DS1023S-200+ is trimmed to exceed the step-zero delay by ~1.5 ns, enabling true zero-relative delay measurements. When used with the REF output, variations in input voltage, transition time, and process temperature coefficients are canceled-resulting in stable, repeatable delay values independent of signal edge quality.

Can the DS1023S-200+ be programmed serially while other devices on the same bus remain unaffected?

Yes-serial programming of the DS1023S-200+ is isolated during active load cycles. When P/S = 1 and LE = 1, only the device with its serial clock (CLK/P1) actively toggling will accept data; others on a shared bus retain their prior programmed value until individually addressed. Daisy-chaining requires sequential bit shifting, but each device processes only its assigned 8-bit segment.

What is the minimum usable pulse width for PWM mode on the DS1023S-200+?

The DS1023S-200+ specifies a minimum reliable PWM output pulse width of 5 ns. Programmed values yielding narrower pulses may produce degraded high-level voltage or no discernible output due to internal response limits. For robust operation, use programmed delays ≥5 ns in PWM mode (MS = 1), with actual pulse width equal to the programmed value referenced to the step-zero delay.