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Analog Devices Inc./Maxim Integrated DS1077LZ-50
- Part No.:
- DS1077LZ-50
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Programmable Timers and Oscillators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DS1077LZ-50.pdf
- Description:
- IC OSC DUAL FX FREQ PROG 8-SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,048
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Product details
Overview
DS1077LZ-50 from Maxim Integrated is a dual-output, nonvolatile, 2-wire programmable oscillator with fixed-frequency operation. It delivers synchronous OUT0 (reference) and OUT1 (main) outputs ranging from 6.09kHz to 50.000MHz, ±0.5% initial tolerance, ±1.25% variation over temperature and supply voltage, and operates from a single 2.7V–3.6V supply. Used in embedded timing control for microcontroller clocking and peripheral synchronization.
For engineers reviewing the DS1077LZ-50 datasheet, DS1077LZ-50 pinout, DS1077LZ-50 application, or DS1077LZ-50 equivalent, this page provides verified functional architecture, validated pin roles, confirmed EEPROM-programmable prescaler/divider configuration, real-world jitter and power-down behavior, and direct alternative part comparisons for frequency-flexible clock generation.
Technical Context
The DS1077LZ-50 integrates an internal master oscillator factory-trimmed to 50MHz, two independent M-dividers (P0 and P1, each selectable for ÷1/÷2/÷4/÷8), and a programmable N-divider (2–1025) on the OUT1 path. Its 2-wire serial interface enables in-circuit reprogramming of all timing registers, with values stored in nonvolatile EEPROM.
Control logic supports synchronous output gating via CTRL0 (multifunction: MUX select, OUT0 enable, or power-down) and CTRL1 (OUT1 enable or power-down), with OR-connected shutdown capability. Power-up defaults include DIV1 = 0 (N-divider active), P0 = ÷2, P1 = ÷2, and WC = 0 (auto-EEPROM write).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency Range | 6.09kHz to 50.000MHz - covers low-speed peripherals and high-speed MCU clocks without external components |
| Initial Frequency Tolerance | ±0.5% - ensures accurate timing at power-on before temperature/voltage drift |
| Temp & Voltage Variation | ±1.25% - guarantees stable clock accuracy across industrial -40°C to +85°C and 2.7V–3.6V supply range |
| Output Jitter (66MHz ref) | 50ps (3σ pk-pk) - meets low-jitter requirements for high-speed digital interfaces |
| Supply Current (Active) | 20mA max @ 50MHz - enables efficient power budgeting in battery-sensitive or thermally constrained designs |
| Standby Current | 10µA - supports ultra-low-power sleep modes with full frequency retention |
| Interface Protocol | 2-wire I²C-compatible (100kHz/400kHz) - allows reuse of existing system bus infrastructure with no protocol translation |
Pinout & Package
DS1077LZ-50 is housed in an 8-pin 150mil SOIC package (Z suffix), with exposed pad not present and lead finish SnPb. Pin functions are electrically validated per Maxim's official DS1077L datasheet Rev. 0.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1 | Main oscillator output | Delivers final programmed frequency (P1 ÷ N or P1 only if DIV1=1); TTL/CMOS compatible |
| OUT0 | Reference output | Provides prescaled master clock (P0 ÷ M); used for synchronization or secondary timing domains |
| VCC | Power supply | Single 2.7V–3.6V rail powers internal oscillator, logic, and outputs; requires local 0.01µF + 0.1µF decoupling |
| GND | Ground reference | Common return for all analog/digital circuitry; must be low-impedance connection to minimize noise coupling |
| CTRL0 | Multifunction control input | Configurable as OUT0 enable, MUX select (master vs. P0 output), or device power-down (with PDN0=1) |
| CTRL1 | OUT1 control input | Configurable as OUT1 enable or global power-down (with PDN1=1); OR'd with CTRL0 for redundant shutdown |
| SDA | 2-wire serial data I/O | Open-drain bidirectional line; requires external 5kΩ pull-up; supports read/write of DIV/MUX/BUS registers |
| SCL | 2-wire serial clock input | Master-generated clock (100kHz/400kHz); synchronizes all register access and EEPROM writes |
Key Features
| Feature | Design Value |
|---|---|
| Dual synchronous outputs | OUT0 and OUT1 share same master clock source and prescaler timing, eliminating inter-channel skew in multi-clock systems |
| On-the-fly frequency reprogramming | Registers updated in-circuit without reset or power cycle; new frequencies take effect after next clock edge |
| Nonvolatile EEPROM storage | All frequency and mode settings retained across power cycles; eliminates boot-time configuration overhead |
| Synchronous output gating | CTRL0/CTRL1 transitions occur only at output low phase, preventing runt pulses or metastability in downstream logic |
| Smart power-down sequencing | Outputs disabled before core shutdown; prevents glitches during entry/exit; requires ≥2× lowest output period + 10µs hold time |
Applications
| Microcontroller Clock Source | Peripheral Synchronization |
|---|---|
Use Scenario: Providing main system clock to an ARM Cortex-M4 MCU operating at 50MHz with tight setup/hold margin. IC Role / Device Role / Timing Role: Primary clock generator delivering stable 50.000MHz signal with ±0.5% initial accuracy and <50ps jitter. Use Value: Eliminates need for external crystal + PLL, reduces BOM count by 3 components, and avoids layout sensitivity of discrete oscillators. |
Use Scenario: Synchronizing UART, SPI, and I²C peripherals sharing a common timing domain in an industrial sensor node. IC Role / Device Role / Timing Role: Reference clock distributor generating matched OUT0 (12.5MHz) and OUT1 (50MHz) from same master source. Use Value: Ensures zero inter-peripheral skew and deterministic phase alignment, critical for time-stamped sensor fusion. |
| Low-Power Sleep Mode Control | Field-Programmable Frequency Adjustment |
Use Scenario: Enabling deep-sleep mode in a battery-powered IoT gateway where only RTC and wake-up logic remain active. IC Role / Device Role / Timing Role: Dual-role timing device: supplies 32.768kHz-equivalent reference via prescaler while enabling full shutdown via CTRL0/CTRL1. Use Value: Reduces system standby current to <15µA by powering down oscillator core while retaining EEPROM-stored settings. |
Use Scenario: Supporting firmware-upgradable clock rates in medical diagnostic equipment requiring FDA-compliant field updates. IC Role / Device Role / Timing Role: In-system programmable oscillator allowing post-deployment frequency changes via standard I²C interface. Use Value: Enables calibration adjustments or protocol upgrades (e.g., USB 2.0 → USB 3.0 clocking) without hardware revision or rework. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable oscillator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si5351A-B-GM | 3-output, I²C-programmable clock generator with fractional PLL; 8kHz–200MHz range; requires external crystal | Supports arbitrary frequencies via fractional synthesis; higher flexibility but added BOM and layout complexity | Choose when multi-frequency agility or sub-hertz resolution is required; avoid if fixed dual-output simplicity is prioritized |
| ICS552GI-01LFT | Dual-output, pin-strapped fixed-frequency oscillator (no I²C); 50MHz/25MHz outputs; ±25ppm stability | No in-field reprogramming; lower jitter (20ps) but zero configurability after manufacture | Choose for cost-sensitive, high-volume production where frequency is immutable and jitter is paramount |
Compared with Si5351A-B-GM and ICS552GI-01LFT, DS1077LZ-50 uniquely balances EEPROM-retained dual-output programmability, zero external components, and industrial-grade stability-making it optimal for mid-volume embedded systems needing field-adjustable yet deterministic timing.
Availability
DS1077LZ-50 is available at Aetrix Electronics and suitable for microcontroller clocking, peripheral synchronization, low-power sleep control, and field-programmable frequency adjustment requiring stable component supply across industrial, medical, and test equipment lifecycles.
Supply support for DS1077LZ-50 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) is a semiconductor leader specializing in precision analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets.
The DS1077L product line was designed as a family of "EconOscillators" to replace crystal+buffer solutions with integrated, programmable, single-supply clock sources for space-constrained embedded systems.
FAQ
What is the maximum output frequency supported by DS1077LZ-50?
The DS1077LZ-50 supports a maximum output frequency of 50.000MHz on the OUT1 pin. This is its factory-configured master oscillator frequency, which may be divided down via the P1 prescaler (÷1/÷2/÷4/÷8) and optional N-divider (2–1025). The OUT0 pin supports up to 25MHz (P0 = ÷2 of master), and both outputs maintain ±1.25% accuracy across temperature and voltage. Frequencies above 50MHz are not supported for this variant.
Does DS1077LZ-50 require an external crystal or resonator?
No, DS1077LZ-50 does not require any external timing components. It contains a fully integrated, factory-trimmed silicon oscillator core operating at 50MHz. All timing functions-including dual outputs, prescaling, and division-are implemented internally. Only standard power supply decoupling (0.01µF + 0.1µF ceramic capacitors near VCC/GND) is required for stable operation.
How is frequency programming performed on DS1077LZ-50?
Frequency programming on DS1077LZ-50 is performed via its 2-wire serial interface (I²C-compatible) using commands to write to the DIV, MUX, and BUS registers. The DIV register sets the N-divider value (2–1025), MUX controls P0/P1 prescaler selection (÷1/÷2/÷4/÷8), and BUS configures device address and EEPROM write mode. Register values are stored nonvolatively in on-chip EEPROM and persist across power cycles.
Can DS1077LZ-50 generate two independent frequencies?
Yes, DS1077LZ-50 generates two independent but synchronous frequencies: OUT0 is derived solely from the P0 prescaler applied to the 50MHz master clock, while OUT1 is derived from P1 followed optionally by the N-divider. Because both outputs originate from the same master oscillator, they maintain precise phase relationship and zero long-term drift between channels-ideal for multi-clock domain synchronization.
What is the power-down behavior of DS1077LZ-50?
In power-down mode (activated by asserting CTRL0 or CTRL1 with corresponding PDN0/PDN1 bits set), DS1077LZ-50 first disables both OUT0 and OUT1 outputs synchronously at the next low phase, then shuts down the internal oscillator core. Standby current drops to 10µA. Outputs remain in Hi-Z state until power-up stabilization (~8000 cycles), after which default EEPROM-stored frequencies resume automatically-no host reinitialization required.
DS1077LZ-50 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- EconOscillator™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- Oscillator, Fixed Frequency (Dual)
- Count:
- -
- Frequency:
- 6.09kHz ~ 50MHz
- Voltage - Supply:
- 2.7V ~ 3.6V
- Current - Supply:
- 20 mA
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 8-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
DS1077LZ-50 FAQ
1.How can I place an order for DS1077LZ-50 through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1077LZ-50 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for DS1077LZ-50 reliable?
The price and inventory of DS1077LZ-50 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1077LZ-50 is usually 5 days.
3.What payment methods are accepted for DS1077LZ-50?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1077LZ-50 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1077LZ-50?
DS1077LZ-50 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1077LZ-50 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for DS1077LZ-50?
For technical support, including DS1077LZ-50 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1077LZ-50 requirements.
6.How does Aetrix verify that DS1077LZ-50 is sourced from the original manufacturer or authorized distributors?
All DS1077LZ-50 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DS1077LZ-50 meets industry standards.
7.What is the process for return or replacement of DS1077LZ-50?
All DS1077LZ-50 units undergo pre-shipment inspection (PSI). If there is an issue with DS1077LZ-50, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The DS1077LZ-50 part is unused and in its original packaging.
Return procedure for DS1077LZ-50:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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