data-converters

PCM1808

Key datasheet specifications and the closest alternatives, ranked by parametric similarity and grounded in the manufacturer datasheet.

01 — Overview

This TI datasheet covers the PCM1808, a single-chip stereo analog-to-digital converter (ADC) with single-ended voltage input. It is designed for high-performance audio applications like DVD recorders and digital TVs. Key parameters include 24-bit resolution, 96-kHz sampling rate, 99dB typical SNR, and THD+N of -93dB. The device features a delta-sigma modulator with 64-times oversampling, an on-chip antialiasing low-pass filter, and a high-pass filter to remove DC components.

02 — Key specifications

Datasheet parameters

ParameterMinTypMaxConditions
quiescent current — 8.6 mA 11 mA fS = 48 kHz, 96 kHz(6)
supply voltage range 4.5 V 5 V 5.5 V
operating temperature -40 °C — 85 °C
clock frequency 2.05 MHz 12.3 MHz 24.6 MHz 256 fs
power dissipation — 62 mW 81 mW fS = 48 kHz
adc resolution — 24 bit —
rise time — — 20 ns
fall time — — 20 ns
load capacitance — — 20 pF
sample rate 8 kHz 48 kHz 96 kHz
channel count — 2 —
03 — Alternatives

Closest matches to PCM1808

ADS131M02 10.0× lower power dissipation, 4.8× lower quiescent current, 1.9× lower supply voltage range
ADS131M02IPWR 10.0× lower power dissipation, 4.8× lower quiescent current, 1.9× higher operating temperature
ADS1255 2.0× lower supply voltage range, 1.6× lower power dissipation, 1.6× lower sample rate
ADS1114 1.9× higher operating temperature, 1.5× lower adc resolution, 1.1× higher supply voltage range
AD7682BCBZ-RL7 5.2× higher sample rate, 5.0× lower power dissipation, 1.5× lower adc resolution
AD7190BRUZ 20.0× lower sample rate, 1.4× higher operating temperature, similar adc resolution
MCP3002 5.0× higher fall time, 5.0× higher rise time, 4.2× higher sample rate
MCP3004 5.0× higher fall time, 5.0× higher rise time, 4.2× higher sample rate
04 — FAQ

Frequently asked questions

What is the ADC resolution of the PCM1808?

The ADC resolution is 24 bit.

What is the channel count of the PCM1808?

The channel count is 2.

What is the clock frequency at 256 fs?

The clock frequency is 12.3 MHz at 256 fs.

What is the fall time of the PCM1808?

The fall time is 20 ns.

What is the maximum load capacitance for the PCM1808?

The load capacitance is 20 pF.

What is the maximum operating temperature for the PCM1808?

The operating temperature is 85 °C.

What is the power dissipation of the PCM1808 when fS = 48 kHz?

The power dissipation is 62 mW at fS = 48 kHz.

What is the quiescent current when fS = 48 kHz, 96 kHz(6)?

The quiescent current is 8.6 mA.

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