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Analog Devices LTC1666CG#PBF — DC-DC Power Modules

LTC1666CG#PBF 12-Bit DAC, 20 ns Settling, Current Steering

MPNLTC1666CG#PBF
End of Life

Linear Technology LTC1666CG#PBF, 12-bit current-steering DAC, 20 ns typ settling, parallel interface, differential current output, ±5V analog supply, 28-SSOP, 0°C to 70°C.

$20.36Ref. price · indicative, final on quote
Packaging28-SSOP (0.209", 5.30mm Width)
RoHSROHS3 Compliant
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LTC1666CG#PBF specifications
ParameterValue
Output typeCurrent - Unbuffered
MountingSurface Mount
Reference typeExternal, Internal
Voltage - supply, analog±5V
InterfaceParallel
Operating temperature0°C ~ 70°C
PackageTube
ArchitectureCurrent Steering
INL (DNL)±1 (Max), ±1 (Max)
Settling time20ns (Typ)
Number of bits12
Case28-SSOP (0.209\", 5.30mm Width)
Differential outputYes
Number of d (A converters)1

Product details

12-bit current-steering DAC — 20 ns settling buys you real bandwidth

The LTC1666CG#PBF is a 12-bit, current-steering digital-to-analog converter from Linear Technology, in a 28-SSOP package. It delivers a differential current output with a typical settling time of 20 ns — fast enough for direct digital synthesis in communications IF chains, arbitrary waveform generators, and high-speed automatic test equipment.

Supply rails and temperature grade — fit check for the BOM

The analog supply is ±5 V — a bipolar rail is mandatory. This is not a single-supply part; the current-steering core requires the negative rail for the output compliance range. The digital supply is not explicitly listed in the spec summary, but the parallel interface is TTL/CMOS-compatible at 5 V logic levels.

The ROHS3 compliance is current — no exemptions expiring.

Frequently asked questions

What are the best alternatives to LTC1666CG#PBF?

The closest functional peer is the AD9762ARZ from Analog Devices — also a 12-bit current-steering DAC with differential output and parallel interface, but with a 35 ns typical settling time (slower) and a wider industrial temperature range (-40°C to 85°C). The AD9762ARZ operates from a single 2.7 V to 5.5 V supply, which may simplify the power rail if you don't need the ±5 V bipolar supply the LTC1666CG#PBF requires. The AD9754ARUZRL7 is a 14-bit variant (same TxDAC® family) but in a different package and tape-and-reel format.

Can LTC1666CG#PBF operate from a single supply?

No, the analog supply is specified as ±5 V — a bipolar rail is required. The current-steering core needs the negative supply for the output compliance range. A single-supply design would need a different DAC architecture.

Can LTC1666CG#PBF be used in high-speed applications?

Yes, the 20 ns typical settling time supports update rates approaching 50 MHz, making it suitable for direct digital synthesis, arbitrary waveform generation, and IF signal chains in communications equipment.