TDA8790 Datasheet, PDF (2/20 Pages) NXP Semiconductors – 8-bit, 40 Msps 2.7 to 5.5 V universal analog-to-digital converter

Philips Semiconductors
8-bit, 40 Msps 2.7 to 5.5 V universal
analog-to-digital converter
Product specification
TDA8790
FEATURES
• 8-bit resolution
• Operation between 2.7 and 5.5 V
• Sampling rate up to 40 MHz
• DC sampling allowed
• High signal-to-noise ratio over a large analog input
frequency range (7.3 effective bits at 4.43 MHz
full-scale input at f_clk = 40 MHz)
• CMOS/TTL compatible digital inputs and outputs
• External reference voltage regulator
• Power dissipation only 30 mW (typical)
• Low analog input capacitance, no buffer amplifier
required
• Sleep mode (4 mW)
• No sample-and-hold circuit required.
APPLICATIONS
High-speed analog-to-digital conversion for:
• Video data digitizing
• Camera
• Camcorder
• Radio communication.
GENERAL DESCRIPTION
The TDA8790 is an 8-bit universal analog-to-digital
converter (ADC) for video and general purpose
applications. It converts the analog input signal from
2.7 to 5.5 V into 8-bit binary-coded digital words at a
maximum sampling rate of 40 MHz. All digital inputs and
outputs are CMOS/TTL compatible. A sleep mode allows
reduction of the device power consumption down to 4 mW.
QUICK REFERENCE DATA
SYMBOL
V_DDA
V_DDD
V_DDO
∆V_DD
I_DDA
I_DDD
I_DDO
PARAMETER
analog supply voltage
digital supply voltage
output stages supply voltage
supply voltage difference
V_DDA − V_DDD
V_DDD − V_DDO
analog supply current
digital supply current
output stages supply current
INL
DNL
f_clk(max)
P_tot
integral non-linearity
differential non-linearity
maximum clock frequency
total power dissipation
CONDITIONS
f_clk = 40 MHz; C_L = 20 pF;
ramp input
f_clk = 40 MHz; ramp input
f_clk = 40 MHz; ramp input
V_DDA = V_DDD = V_DDO = 3.3 V
MIN.
2.7
2.7
2.5
TYP.
3.3
3.3
3.3
MAX.
5.5
5.5
5.5
UNIT
V
V
V
−0.2 −
−0.2 −
−
4
−
5
−
1
+0.2 V
+2.25 V
6
mA
8
mA
2
mA
−
±0.5 ±0.75 LSB
−
±0.25 ±0.5 LSB
40
−
−
MHz
−
30
53
mW
ORDERING INFORMATION
TYPE
NUMBER
TDA8790M
NAME
SSOP20
PACKAGE
DESCRIPTION
plastic shrink small outline package; 20 leads; body width 4.4 mm
VERSION
SOT266-1
1996 Feb 21
2