Philips Semiconductors
10-bit high-speed low-power ADC with
internal reference regulator
Preliminary specification
TDA8764
FEATURES
• 10-bit resolution (binary or gray code)
• Sampling rate up to 40 MHz (/4 version)
Sampling rate up to 80 MHz (/8 version)
• DC sampling allowed
• One clock cycle conversion only
• High signal-to-noise ratio over a large analog input
frequency range (9.5 effective bits at 5 MHz; full-scale
input at fclk = 40 MHz)
• No missing codes guaranteed
• In-Range (IR) CMOS output
• TTL and CMOS levels compatible digital inputs
• 2.7 to 3.6 V CMOS digital outputs
• Low-level AC clock input signal allowed
• Internal reference voltage regulator
• Power dissipation only 250 mW (typical for /4 version)
Power dissipation only 375 mW (typical for /8 version)
• Low analog input capacitance, no buffer amplifier
required
• No sample-and-hold circuit required.
APPLICATIONS
High-speed analog-to-digital conversion for:
• Video data digitizing
• Radar pulse analysis
• Transient signal analysis
• High energy physics research
• Σ∆ modulators
• Medical imaging.
GENERAL DESCRIPTION
The TDA8764 is a 10-bit high-speed low-power
Analog-to-Digital Converter (ADC) for professional video
and other applications. It converts the analog input signal
into 10-bit binary or gray coded digital words at a maximum
sampling rate of 40 MHz (/4 version) and 80 MHz
(/8 version). All digital inputs and outputs are TTL
compatible, although a low-level sine wave clock input
signal is allowed.
The device includes an internal voltage reference
regulator.
ORDERING INFORMATION
TYPE
NUMBER
TDA8764TS/4
TDA8764TS/8
TDA8764HL/4
TDA8764HL/8
PACKAGE
NAME
DESCRIPTION
SSOP28 plastic shrink small outline package; 28 leads;
body width 5.3 mm
LQFP32 plastic low profile quad flat package; 32 leads;
body 5 × 5 × 1.4 mm
VERSION
SOT341-1
SOT401-1
SAMPLING
FREQUENCY (MHz)
40
80
40
80
1999 Jan 12
2