Smart Metering - Farnell

The WM9711L is a highly integrated input / output device designed for mobile computing and communications. The device can connect directly to mono or stereo microphones, stereo headphones
and a mono speaker, reducing total component count in the system.
The WM8991 is a highly integrated ultra-low power hi-fi CODEC designed for handsets rich in multimedia features such as GPS, mobile TV, digital audio playback and gaming that can operate in
class D or AB modes.
BTL DAC ADC Analogue Digital
Headphone Speaker SNR/THD SNR/THD Supply Supply Mftrs. Price Each
Pins/Pkg DACs / ADCs Driver Output (dB) (dB) Clocking (V) (V) List No. Order Code 1+ 10+ 100+
Mono Low Power CODECs
24/QFN 1 / 1 ✓ 400mW 98 / -84 94 / -80 Ext. MCLK, PLL 2.5 to 3.6 1.7 to 3.6 WM8940GEFL/RV 177-6284● 1.96 1.47 1.15
24/QFN 1 / 1 – 900mW 98 / -84 94 / -83 Ext. MCLK, PLL 2.5 to 3.6 1.7 to 3.6 WM8974GEFL/RV 177-6291● 2.16 1.62 1.27
Stereo Low Power CODECs
28/SSOP 2 / 2 ✓ – 100 / -86 90 / -84 Ext. MCLK, OSC 1.8 to 3.6 1.4 to 3.6 WM8731SEDS/RV 177-6264● 2.46 1.85 1.45
28/QFN 2 / 2 ✓ – 100 / -90 93 / -81 Ext. MCLK 1.8 to 3.6 1.42 to 3.6 WM8988LGECN/RV 177-6294● 2.91 2.26 1.77
32/QFN 2 / 2 ✓ 400mW 98 / -84 95 / -82 Ext. MCLK 1.8 to 3.6 1.4 to 3.6 WM8750BLGEFL/RV 177-6270● 3.23 2.42 1.90
32/QFN 2 / 2 ✓ 400mW 98 / -84 95 / -82 Ext. MCLK 1.8 to 3.6 1.4 to 3.6 WM8750LSEFL/R 177-6271● 2.93 2.20 1.72
32/QFN 2 / 1 ✓ 900mW 98 / -84 95 / -84 Ext. MCLK, PLL 2.5 to 5.5 1.7 to 3.6 WM8976GEFL/RV 177-6292● 2.77 2.08 1.63
32/QFN 2 / 2 ✓ Up to 1.4W 98 / -84 95 / -82 Ext. MCLK, PLL 2.5 to 3.6 1.7 to 3.6 WM8960GEFL/RV 177-6288● 3.37 2.53 1.98
48/QFN 2 / 2 ✓ 400mW 98 / -84 95 / -82 Ext. MCLK 1.8 to 3.6 1.4 to 3.6 WM9711LGEFL/V 177-6301● 4.22 3.17 2.48
65/BGA 2 / 2 ✓ Up to 1.4W 99 / -84 94 / -82 Ext. MCLK, PLL 2.7 to 5.5 1.5 to 3.6 WM8991GEB/RV 177-6295● 3.98 2.98 2.34
Stereo Low Power CODECs with Touchscreen Controller
The WM9705 is a high-quality stereo audio codec with an integrated touch screen controller. It performs full-duplex 18-bit codec functions and supports variable sample rates
from 8 to 48k samples/s with high SNR.
The WM9712L is a highly integrated input / output device designed for mobile computing and communications. The device can connect directly to a 4-wire or 5-wire
touchpanel, mono or stereo microphones, stereo headphones and a mono speaker. Additionally, phone input and output pins are provided for seamless integration with
wireless communication devices.
The WM9713L is architected for dual CODEC operation, supporting Hi-Fi stereo Codec functions via the AC link interface, and additionally supporting voice Codec functions via a PCM type
Synchronous Serial Port (SSP).
BTL Control & Touch Analogue Digital
Headphone Speaker Data Panel Supply Supply Mftrs. Price Each
Pins/Pkg DACs / ADCs Driver Output Interface Digitiser Clocking (V) (V) List No. Order Code 1+ 10+ 100+
Stereo Low Power CODECs
48/QFN 4 / 3 ✓ 400 mW AC’97 PCM, I2S 4 / 5-wire control Ext. MCLK, PLL 1.8 to 3.6 1.8 to 3.6 WM9713LGEFL/V 135-4191● 5.64 4.51 3.72
48/QFN 2 / 2 ✓ – AC’97 4 / 5-wire control Ext. MCLK, PLL 3.0 to 5.0 3.0 to 5.0 WM9705SEFL/V 177-6298● 4.22 3.17 2.48
48/QFN 3 / 3 ✓ 400 mW AC’97 4 / 5-wire control Ext. MCLK, OSC 1.8 to 3.6 1.5 to 3.6 WM9712LGEFL/V 177-6302● 4.53 3.39 2.66
Power Management with Audio
The WM8351/WM8352 are integrated audio CODECs that allows for the direct connection of headphones and microphones. A programmable low-noise bias voltage is
available to feed one or more electret microphones. They includes four/six programmable DC-DC converters respectively, four low-dropout (LDO) regulators and a current limit
switch to generate suitable supply voltages for each part of the system, as well as off-chip components such as a digital core and I/O supplies, and LED lighting. An additional
on-chip regulator maintains the backup power for always-on functions. These CODECs can be powered by a lithium battery, by a wall adaptor or USB.
BTL Control & Touch Analogue Digital
Headphone Speaker Data Panel Supply Supply Mftrs. Price Each
Pins/Pkg DACs / ADCs Driver Output Interface Digitiser Clocking (V) (V) List No. Order Code 1+ 10+ 100+
129/BGA 2 / 2 ✓ – 1 x 1A, 2 x 500mA 1 x 20V @ 40mA 4 x 150mA 3 WM8351GEB/V 177-6251● 7.60 5.70 4.47
129/BGA 2 / 2 ✓ – 2 x 1A, 2 x 500mA 1 x 20V @ 40mA 4 x 150mA 3 WM8352GEB/V 177-6252● 8.42 6.32 4.96
Stereo Low Power Dual CODECs (voice & audio)
The WM8753L is a low power, high quality stereo Codec with integrated PCM CODEC designed for portable digital telephony applications such as mobile phone, or headset
with Hi-Fi playback capability. The device integrates dual interfaces for two differentially connected microphones, and includes drivers for speakers, headphone and earpiece.
Advanced on-chip digital signal processing performs tone control, bass boost and automatic level control for the microphone or line input through the ADC. The two ADCs may
be used to support voice noise cancellation in a partnering DSP, or for stereo recording.
BTL DAC ADC Control & Analogue Digital
Headphone Speaker SNR/THD SNR/THD Data Supply Supply Mftrs. Price Each
Pins/Pkg DACs / ADCs Driver Output (dB) (dB) Interface Clocking (V) (V) List No. Order Code 1+ 10+ 100+
52/BGA 3 / 2 ✓ 500mW 98 / -84 95 / -82 PCM, I2S External MCLK, PLLs 1.8 to 3.6 1.4 to 3.6 WM8753LGEB/RV 177-6273● 5.47 4.11 3.22
LED Drivers
Input Output Mftrs.
Voltage Current Operating Mftrs. Price Each
Pins/Pkg Description (V) (mA) Temperature List No. Order Code 1+ 10+ 100+ 250+ 500+
4/SOT343 LED Driver for Low Power LED’s 18 10 -65°C to +150°C BCR401W 179-1058● 0.28 0.22 0.17 0.15 0.13
4/SOT343 LED Driver for Low Power LED’s 18 20 -65°C to +150°C BCR402W 179-1061● 0.28 0.22 0.17 0.15 0.13
6/SC74 LED Driver for 0.5W Power LED’s 24 250 -65°C to +150°C BCR320U 179-1065● 0.54 0.42 0.34 0.30 0.25
6/SC74 LED Driver for 0.5W Power LED’s 24 250 -65°C to +150°C BCR321U 179-1066● 0.54 0.42 0.34 0.30 0.25
6/SC74 LED Driver IC for driving LED’s above 100mA 27 90 -65°C to +150°C BCR450 179-1069● 0.71 0.63 0.50 0.45 0.38
6/SC74 LED Driver for Low Power LED’s 40 10 -65°C to +150°C BCR401U 179-1062● 0.38 0.30 0.24 0.21 0.17
6/SC74 LED Driver for Low Power LED’s 40 20 -65°C to +150°C BCR402U 179-1063● 0.38 0.30 0.24 0.21 0.17
6/SC74 LED Driver for Low Power LED’s 40 50 -65°C to +150°C BCR405U 179-1064● 0.38 0.30 0.24 0.21 0.17
6/SC74 LED Driver for 0.25W Power LED’s 40 150 -65°C to +150°C BCR420U 179-1067● 0.54 0.42 0.34 0.30 0.25
6/SC74 LED Driver for 0.25W Power LED’s 40 150 -65°C to +150°C BCR421U 179-1068● 0.54 0.42 0.34 0.30 0.25
USB Host Audio Decoder ICs
The BU9457KV/BU9458KV integrate USB 2.0 memory/SD card host audio and system controllers on a single chip. This configuration combines a
controller and an audio decoder that utilizes commands from a CPU simplifying the design and reducing the number of external components. Both
components are designed with an ESD resistance ±6000V at the USB terminal, 15kV against proximity (air) discharge (when used in conjunction with an
external Zener diode), and 8kV against direct (contact) discharge, providing superior strength against surge noise, resulting in unsurpassed reliability. The
BU9457KV/BU9458KV are compatible with MMC SD, miniSD, microSD, SDHC and support MPEG1,2,2.5 and Layer1,2,3.
Operating Serial Audio Output Price Each
Pins/Pkg Voltage Interface WMA AAC Analog Digital Mftrs. List No. Order Code 1+ 10+ 100+ 250+ 500+
64/VQFP 3V to 3.6V I 2 S BUS – – Line I 2 S SPDIF BU9457KV-E2 177-0569● 31.71 25.72 20.85 17.80 16.77
64/VQFP 3V to 3.6V I 2 S BUS WMA9Standard MPEG4AAC-LC Line I 2 S SPDIF BU9458KV-E2 177-0570● 31.71 25.72 20.85 17.80 16.77
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Analogue ICs